<\/p>\n
Using new observations from NASA\u2019s Hubble Space Telescope<\/a> and ground-based observatories, astronomers tracked the influence of a recently discovered companion star, Siwarha, on the gas around Betelgeuse. The research, from scientists at the Center for Astrophysics | Harvard & Smithsonian (CfA), reveals a trail of dense gas swirling through Betelgeuse\u2019s vast, extended atmosphere, shedding light on why the giant star\u2019s brightness and atmosphere have changed in strange and unusual ways.<\/p>\nThe results of the new study were presented Monday at a news conference at the 247th meeting<\/a> of the American Astronomical Society in Phoenix and are accepted for publication in The Astrophysical Journal<\/a>.<\/p>\nThe team detected Siwarha\u2019s wake by carefully tracking changes in the star\u2019s light over nearly eight years. These changes show the effects of the previously unconfirmed companion as it plows through the outer atmosphere of Betelgeuse. This discovery resolves one of the biggest mysteries about the giant star, helping scientists to explain how it behaves and evolves while opening new doors to understanding other massive stars nearing the end of their lives.<\/p>\nLocated roughly 650 light-years away from Earth in the constellation Orion, Betelgeuse is a red supergiant star so large that more than 400 million Suns could fit inside. Because of its enormous size and proximity, Betelgeuse is one of the few stars whose surface and surrounding atmosphere can be directly observed by astronomers, making it an important and accessible laboratory for studying how giant stars age, lose mass, and eventually explode as supernovae.<\/p>\n\n\n\n<\/a><\/figure>\nThis artist\u2019s concept shows the red supergiant star Betelgeuse and an orbiting companion star. The companion, which is orbiting clockwise from this point of view, generates a dense wake of gas that expands outward. It is so close to Betelgeuse that it is passing through the extended outer atmosphere of the supergiant. The companion star is not to scale; it would be a pinprick compared to Betelgeuse, which is hundreds of times larger. The companion\u2019s distance from Betelgeuse is to scale relative to the diameter of Betelgeuse.<\/div>\nArtwork: NASA, ESA, Elizabeth Wheatley (STScI); Science: Andrea Dupree (CfA)<\/div>\n<\/figcaption><\/div>\n<\/div>\n<\/div>\nUsing NASA\u2019s Hubble and ground-based telescopes at the Fred Lawrence Whipple Observatory and Roque de Los Muchachos Observatory, the team was able to see a pattern of changes in Betelgeuse, which provided clear evidence of a long-suspected companion star and its impact on the red supergiant\u2019s outer atmosphere. Those include changes in the star\u2019s spectrum, or the specific colors of light given off by different elements, and the speed and direction of gases in the outer atmosphere due to a trail of denser material, or wake. This trail appears just after the companion crosses in front of Betelgeuse every six years, or about 2,100 days, confirming theoretical models.<\/p>\n\u201cIt\u2019s a bit like a boat moving through water. The companion star creates a ripple effect in Betelgeuse\u2019s atmosphere that we can actually see in the data,\u201d said Andrea Dupree, an astronomer at the CfA, and the lead study author. \u201cFor the first time, we\u2019re seeing direct signs of this wake, or trail of gas, confirming that Betelgeuse really does have a hidden companion shaping its appearance and behavior.\u201d<\/p>\nFor decades, astronomers have tracked changes in Betelgeuse\u2019s brightness and surface features in hopes of figuring out why the star behaves the way it does. Curiosity intensified after the giant star appeared to \u201csneeze\u201d<\/a> and became unexpectedly faint in 2020. Two distinct periods of variation in the star were especially puzzling for scientists: a short 400-day cycle, recently attributed to pulsations within the star itself, and the long, 2,100-day secondary period.<\/p>\n\n\n\n<\/a><\/figure>\nScientists used NASA\u2019s Hubble Space Telescope to look for evidence of a wake being generated by a companion star orbiting Betelgeuse. The team found a noticeable difference in light shown in the lefthand peak when the companion star was at different points in its orbit.<\/div>\nIllustration: NASA, ESA, Elizabeth Wheatley (STScI); Science: Andrea Dupree (CfA)<\/div>\n<\/figcaption><\/div>\n<\/div>\n<\/div>\nUntil now, scientists have considered everything from large convection cells and clouds of dust to magnetic activity, and the possibility of a hidden companion star. Recent studies concluded that the long secondary period was best explained by the presence of a low-mass companion orbiting deep within Betelgeuse\u2019s atmosphere, and another team of scientists reported a possible detection, but until now, astronomers lacked the evidence to prove what they believed was happening. Now, for the first time, they have firm evidence that a companion is disrupting the atmosphere of this supergiant star.<\/p>\n\u201cThe idea that Betelgeuse had an undetected companion has been gaining in popularity for the past several years, but without direct evidence, it was an unproven theory,\u201d said Dupree. \u201cWith this new direct evidence, Betelgeuse gives us a front-row seat to watch how a giant star changes over time. Finding the wake from its companion means we can now understand how stars like this evolve, shed material, and eventually explode as supernovae.\u201d<\/p>\nWith Betelgeuse now eclipsing its companion from our point of view, astronomers are planning new observations for its next emergence in 2027. This breakthrough may also help explain similar mysteries in other giant and supergiant stars.<\/p>\nThe Hubble Space Telescope has been operating for over three decades and continues to make ground-breaking discoveries that shape our fundamental understanding of the universe. Hubble is a project of international cooperation between NASA and ESA (European Space Agency). NASA\u2019s Goddard Space Flight Center in Greenbelt, Maryland, manages the telescope and mission operations. Lockheed Martin Space, based in Denver, also supports mission operations at Goddard. The Space Telescope Science Institute in Baltimore, which is operated by the Association of Universities for Research in Astronomy, conducts Hubble science operations for NASA.<\/em><\/p>\n\n\n\n\t\t\t\tFacebook logo<\/title><path d=\"M9 8h-3v4h3v12h5v-12h3.642l.358-4h-4v-1.667c0-.955.192-1.333 1.115-1.333h2.885v-5h-3.808c-3.596 0-5.192 1.583-5.192 4.615v3.385z\"><\/path><\/svg>\t\t\t<\/div>\n<div class=\"hds-social-media-items padding-left-2\">\n\t\t\t\t<a target=\"_blank\" class=\"margin-right-2\" href=\"https:\/\/facebook.com\/NASAHubble\" aria-label=\"Go to @NASAHubble on facebook\" rel=\"noopener\">@NASAHubble<\/a>\t\t\t<\/div>\n<\/div>\n<div class=\"display-flex flex-align-center padding-y-1\">\n<div class=\"circle-4 minw-4 display-flex flex-align-center flex-justify-center\">\n\t\t\t\t<svg width=\"1200\" height=\"1227\" viewbox=\"0 0 1200 1227\" fill=\"none\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M714.163 519.284L1160.89 0H1055.03L667.137 450.887L357.328 0H0L468.492 681.821L0 1226.37H105.866L515.491 750.218L842.672 1226.37H1200L714.137 519.284H714.163ZM569.165 687.828L521.697 619.934L144.011 79.6944H306.615L611.412 515.685L658.88 583.579L1055.08 1150.3H892.476L569.165 687.854V687.828Z\" fill=\"white\"><\/path><\/svg>\t\t\t<\/div>\n<div class=\"hds-social-media-items padding-left-2\">\n\t\t\t\t<a target=\"_blank\" class=\"margin-right-2\" href=\"https:\/\/x.com\/NASAHubble\" aria-label=\"Go to @NASAHubble on twitter\">@NASAHubble<\/a>\t\t\t<\/div>\n<\/div>\n<div class=\"display-flex flex-align-center padding-y-1\">\n<div class=\"circle-4 minw-4 display-flex flex-align-center flex-justify-center\">\n\t\t\t\t<svg version=\"1.1\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" xmlns:xlink=\"http:\/\/www.w3.org\/1999\/xlink\" x=\"0px\" y=\"0px\" width=\"169.063px\" height=\"169.063px\" viewbox=\"0 0 169.063 169.063\" xml:space=\"preserve\" aria-labelledby=\"instagramIconTitle\"><title>Instagram logo<\/title><g> <path d=\"M122.406,0H46.654C20.929,0,0,20.93,0,46.655v75.752c0,25.726,20.929,46.655,46.654,46.655h75.752 c25.727,0,46.656-20.93,46.656-46.655V46.655C169.063,20.93,148.133,0,122.406,0z M154.063,122.407 c0,17.455-14.201,31.655-31.656,31.655H46.654C29.2,154.063,15,139.862,15,122.407V46.655C15,29.201,29.2,15,46.654,15h75.752 c17.455,0,31.656,14.201,31.656,31.655V122.407z\"><\/path> <path d=\"M84.531,40.97c-24.021,0-43.563,19.542-43.563,43.563c0,24.02,19.542,43.561,43.563,43.561s43.563-19.541,43.563-43.561 C128.094,60.512,108.552,40.97,84.531,40.97z M84.531,113.093c-15.749,0-28.563-12.812-28.563-28.561 c0-15.75,12.813-28.563,28.563-28.563s28.563,12.813,28.563,28.563C113.094,100.281,100.28,113.093,84.531,113.093z\"><\/path> <path d=\"M129.921,28.251c-2.89,0-5.729,1.17-7.77,3.22c-2.051,2.04-3.23,4.88-3.23,7.78c0,2.891,1.18,5.73,3.23,7.78 c2.04,2.04,4.88,3.22,7.77,3.22c2.9,0,5.73-1.18,7.78-3.22c2.05-2.05,3.22-4.89,3.22-7.78c0-2.9-1.17-5.74-3.22-7.78 C135.661,29.421,132.821,28.251,129.921,28.251z\"><\/path><\/g><\/svg>\t\t\t<\/div>\n<div class=\"hds-social-media-items padding-left-2\">\n\t\t\t\t<a target=\"_blank\" class=\"margin-right-2\" href=\"https:\/\/instagram.com\/NASAHubble\" aria-label=\"Go to @NASAHubble on instagram\" rel=\"noopener\">@NASAHubble<\/a>\t\t\t<\/div>\n<\/div>\n<\/div>\n<div class=\"hds-featured-link-list bg-carbon-05 padding-x-2 tablet:padding-x-3 desktop:padding-x-4 padding-y-5 desktop:padding-y-6 hds-module hds-module-full alignfull wp-block-nasa-blocks-featured-link-list\">\n<div class=\"grid-container grid-container-block padding-0\">\n<div class=\"margin-bottom-4\">\n<h2 class=\"heading-22\">\n\t\t\t\tRelated Images & Videos\t\t\t<\/h2>\n<\/div>\n<div class=\"grid-row padding-y-2 border-top-1px border-color-carbon-30-important\">\n<div class=\"grid-row featured-link-list-row width-full flex-align-center\">\n<div class=\"grid-col-2 desktop:grid-col-1 tablet:padding-right-3 desktop:padding-right-5\">\n<div class=\"width-full\">\n<div class=\"hds-cover-wrapper width-full ratio-1x1 radius-pill overflow-hidden\">\n<figure class=\"hds-media-background \"><img decoding=\"async\" width=\"3840\" height=\"2160\" src=\"https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/releases\/2026\/01\/STScI-01KDQQ7JYKDRX3AYTJ2BHCAZ03.jpg?w=3840&h=2160&fit=clip&crop=faces%2Cfocalpoint\" class=\"attachment-thumbnail size-thumbnail\" alt=\"An illustration of the red supergiant star Betelgeuse, its companion star, and a dusty wake. The disk of a red-orange star is in the center. It is surrounded by a diffuse orange cloud representing its extended atmosphere. Below it about one stellar diameter away is a yellow dot representing a smaller companion star. From the companion, a dark red cloud wraps around in a counterclockwise direction. It begins very narrow and expands as it gets further from the companion, finally disappearing at the outer edge of the diffuse orange cloud around 10 ou2019clock. The words u201cartistu2019s conceptu201d are at lower right.\" block_context=\"nasa-block\" loading=\"lazy\" srcset=\"https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/releases\/2026\/01\/STScI-01KDQQ7JYKDRX3AYTJ2BHCAZ03.jpg?w=3840&h=2160&fit=crop&crop=faces%2Cfocalpoint 3840w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/releases\/2026\/01\/STScI-01KDQQ7JYKDRX3AYTJ2BHCAZ03.jpg?w=300&h=169&fit=crop&crop=faces%2Cfocalpoint 300w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/releases\/2026\/01\/STScI-01KDQQ7JYKDRX3AYTJ2BHCAZ03.jpg?w=768&h=432&fit=crop&crop=faces%2Cfocalpoint 768w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/releases\/2026\/01\/STScI-01KDQQ7JYKDRX3AYTJ2BHCAZ03.jpg?w=1024&h=576&fit=crop&crop=faces%2Cfocalpoint 1024w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/releases\/2026\/01\/STScI-01KDQQ7JYKDRX3AYTJ2BHCAZ03.jpg?w=1536&h=864&fit=crop&crop=faces%2Cfocalpoint 1536w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/releases\/2026\/01\/STScI-01KDQQ7JYKDRX3AYTJ2BHCAZ03.jpg?w=2048&h=1152&fit=crop&crop=faces%2Cfocalpoint 2048w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/releases\/2026\/01\/STScI-01KDQQ7JYKDRX3AYTJ2BHCAZ03.jpg?w=400&h=225&fit=crop&crop=faces%2Cfocalpoint 400w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/releases\/2026\/01\/STScI-01KDQQ7JYKDRX3AYTJ2BHCAZ03.jpg?w=600&h=338&fit=crop&crop=faces%2Cfocalpoint 600w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/releases\/2026\/01\/STScI-01KDQQ7JYKDRX3AYTJ2BHCAZ03.jpg?w=900&h=506&fit=crop&crop=faces%2Cfocalpoint 900w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/releases\/2026\/01\/STScI-01KDQQ7JYKDRX3AYTJ2BHCAZ03.jpg?w=1200&h=675&fit=crop&crop=faces%2Cfocalpoint 1200w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/releases\/2026\/01\/STScI-01KDQQ7JYKDRX3AYTJ2BHCAZ03.jpg?w=2000&h=1125&fit=crop&crop=faces%2Cfocalpoint 2000w\" sizes=\"auto, (max-width: 3840px) 100vw, 3840px\"><\/figure>\n<\/div>\n<\/div>\n<\/div>\n<div class=\"grid-col-8 desktop:grid-col-10 padding-left-3 desktop:padding-left-0\">\n<div class=\"grid-row flex-align-center\">\n<div class=\"grid-col-12 desktop:grid-col-6\">\n<h2 class=\"heading-36 margin-0\">Betelgeuse and Wake of its Companion Star (Artist\u2019s Concept)<\/h2>\n<\/div>\n<div class=\"grid-col-12 desktop:grid-col-6\">\n<p class=\"p-md margin-0 color-carbon-black-important\">This artist\u2019s concept shows the red supergiant star Betelgeuse and an orbiting companion star. The companion, which is orbiting clockwise from this point of view, generates a dusty wake that expands outward.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<div class=\"grid-col-2 desktop:grid-col-1 display-flex flex-justify-end\">\n\t\t\t\t\t\t<a href=\"https:\/\/science.nasa.gov\/asset\/hubble\/betelgeuse-and-wake-of-its-companion-star-artists-concept\/\" target=\"\" aria-label=\"Betelgeuse and Wake of its Companion Star (Artist's Concept)\" class=\"link-external-false\" rel=\"noopener\"><br \/>\n <svg class=\"hds-featured-link-list-button margin-left-auto margin-right-0\" viewbox=\"0 0 32 32\" fill=\"none\">\n <circle class=\"color-nasa-red\" cx=\"16\" cy=\"16\" r=\"16\"><\/circle><path d=\"M8 16.956h12.604l-3.844 4.106 1.252 1.338L24 16l-5.988-6.4-1.252 1.338 3.844 4.106H8v1.912z\" class=\"color-spacesuit-white\"><\/path>\n <\/svg><br \/>\n\t\t\t\t\t\t<\/a>\n\t\t\t\t\t<\/div>\n<\/div>\n<\/div>\n<div class=\"grid-row padding-y-2 border-top-1px border-color-carbon-30-important\">\n<div class=\"grid-row featured-link-list-row width-full flex-align-center\">\n<div class=\"grid-col-2 desktop:grid-col-1 tablet:padding-right-3 desktop:padding-right-5\">\n<div class=\"width-full\">\n<div class=\"hds-cover-wrapper width-full ratio-1x1 radius-pill overflow-hidden\">\n<figure class=\"hds-media-background \"><img decoding=\"async\" width=\"3840\" height=\"2255\" src=\"https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/releases\/2026\/01\/STScI-01KDNZZAJQ5ZAZJK3FM5Y0RCCN.jpg?w=3840&h=2255&fit=clip&crop=faces%2Cfocalpoint\" class=\"attachment-thumbnail size-thumbnail\" alt=\"A graphic titled u201cBetelgeuse: Effect of Companion Star Wakeu201d with a subtitle u201cSpectrum of Light Emitted by Iron (Fe II).u201d A graph plots brightness versus wavelength of light.\" block_context=\"nasa-block\" loading=\"lazy\" srcset=\"https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/releases\/2026\/01\/STScI-01KDNZZAJQ5ZAZJK3FM5Y0RCCN.jpg?w=3840&h=2255&fit=crop&crop=faces%2Cfocalpoint 3840w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/releases\/2026\/01\/STScI-01KDNZZAJQ5ZAZJK3FM5Y0RCCN.jpg?w=300&h=176&fit=crop&crop=faces%2Cfocalpoint 300w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/releases\/2026\/01\/STScI-01KDNZZAJQ5ZAZJK3FM5Y0RCCN.jpg?w=768&h=451&fit=crop&crop=faces%2Cfocalpoint 768w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/releases\/2026\/01\/STScI-01KDNZZAJQ5ZAZJK3FM5Y0RCCN.jpg?w=1024&h=601&fit=crop&crop=faces%2Cfocalpoint 1024w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/releases\/2026\/01\/STScI-01KDNZZAJQ5ZAZJK3FM5Y0RCCN.jpg?w=1536&h=902&fit=crop&crop=faces%2Cfocalpoint 1536w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/releases\/2026\/01\/STScI-01KDNZZAJQ5ZAZJK3FM5Y0RCCN.jpg?w=2048&h=1203&fit=crop&crop=faces%2Cfocalpoint 2048w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/releases\/2026\/01\/STScI-01KDNZZAJQ5ZAZJK3FM5Y0RCCN.jpg?w=400&h=235&fit=crop&crop=faces%2Cfocalpoint 400w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/releases\/2026\/01\/STScI-01KDNZZAJQ5ZAZJK3FM5Y0RCCN.jpg?w=600&h=352&fit=crop&crop=faces%2Cfocalpoint 600w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/releases\/2026\/01\/STScI-01KDNZZAJQ5ZAZJK3FM5Y0RCCN.jpg?w=900&h=529&fit=crop&crop=faces%2Cfocalpoint 900w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/releases\/2026\/01\/STScI-01KDNZZAJQ5ZAZJK3FM5Y0RCCN.jpg?w=1200&h=705&fit=crop&crop=faces%2Cfocalpoint 1200w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/releases\/2026\/01\/STScI-01KDNZZAJQ5ZAZJK3FM5Y0RCCN.jpg?w=2000&h=1174&fit=crop&crop=faces%2Cfocalpoint 2000w\" sizes=\"auto, (max-width: 3840px) 100vw, 3840px\"><\/figure>\n<\/div>\n<\/div>\n<\/div>\n<div class=\"grid-col-8 desktop:grid-col-10 padding-left-3 desktop:padding-left-0\">\n<div class=\"grid-row flex-align-center\">\n<div class=\"grid-col-12 desktop:grid-col-6\">\n<h2 class=\"heading-36 margin-0\">Betelgeuse: Effect of Companion Star Wake<\/h2>\n<\/div>\n<div class=\"grid-col-12 desktop:grid-col-6\">\n<p class=\"p-md margin-0 color-carbon-black-important\">Scientists used NASA\u2019s Hubble Space Telescope to look for evidence of a wake being generated by a companion star orbiting Betelgeuse. The team found a noticeable difference in light shown in the lefthand peak when the companion star was at different points in its orbit.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<div class=\"grid-col-2 desktop:grid-col-1 display-flex flex-justify-end\">\n\t\t\t\t\t\t<a href=\"https:\/\/science.nasa.gov\/asset\/hubble\/betelgeuse-effect-of-companion-star-wake\/\" target=\"\" aria-label=\"Betelgeuse: Effect of Companion Star Wake\" class=\"link-external-false\" rel=\"noopener\"><br \/>\n <svg class=\"hds-featured-link-list-button margin-left-auto margin-right-0\" viewbox=\"0 0 32 32\" fill=\"none\">\n <circle class=\"color-nasa-red\" cx=\"16\" cy=\"16\" r=\"16\"><\/circle><path d=\"M8 16.956h12.604l-3.844 4.106 1.252 1.338L24 16l-5.988-6.4-1.252 1.338 3.844 4.106H8v1.912z\" class=\"color-spacesuit-white\"><\/path>\n <\/svg><br \/>\n\t\t\t\t\t\t<\/a>\n\t\t\t\t\t<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<p>\n<\/p>\n<div class=\"nasa-gb-align-full width-full maxw-full padding-x-3 padding-y-0 nasa_template_article_b hds-module hds-module-full alignfull wp-block-nasa-blocks-credits-and-details\">\n<section class=\"padding-x-0 padding-top-5 padding-bottom-2 desktop:padding-top-7 desktop:padding-bottom-9\">\n<div class=\"grid-row grid-container maxw-widescreen padding-0\">\n<div class=\"grid-col-12 desktop:grid-col-2 padding-right-4 margin-bottom-5 desktop:margin-bottom-0\">\n<div class=\"padding-top-3 border-top-1px border-color-carbon-black\">\n<div class=\"margin-bottom-2\">\n<h2 class=\"heading-14\">Share<\/h2>\n<\/div>\n<div class=\"padding-bottom-2\">\n<ul class=\"social-icons social-icons-round\">\n<li class=\"social-icon social-icon-x\">\n\t\t\t\t\t\t\t<a href=\"https:\/\/x.com\/intent\/tweet?via=NASA&text=NASA%20Hubble%20Helps%20Detect%20%26%238216%3BWake%26%238217%3B%20of%20Betelgeuse%E2%80%99s%20Elusive%20Companion%20Star&url=https%3A%2F%2Fscience.nasa.gov%2Fmissions%2Fhubble%2Fnasa-hubble-helps-detect-wake-of-betelgeuses-elusive-companion-star%2F\" 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href=\"https:\/\/science.nasa.gov\/feed\/\" aria-label=\"Subscribe to RSS feed.\"><br \/>\n\t\t\t\t\t\t\t\t<svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewbox=\"0 0 800 800\" aria-hidden=\"true\"><path d=\"M493 652H392c0-134-111-244-244-244V307c189 0 345 156 345 345zm71 0c0-228-188-416-416-416V132c285 0 520 235 520 520z\"><\/path><circle cx=\"219\" cy=\"581\" r=\"71\"><\/circle><\/svg><br \/>\n\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t<\/li>\n<\/ul>\n<\/div>\n<\/div>\n<\/div>\n<div class=\"grid-col-12 desktop:grid-col-5 padding-right-4 margin-bottom-5 desktop:margin-bottom-0\">\n<div class=\"padding-top-3 border-top-1px border-color-carbon-black\">\n<div class=\"margin-bottom-2\">\n<h2 class=\"heading-14\">Details<\/h2>\n<\/div>\n<div class=\"grid-row margin-bottom-3\">\n<div class=\"grid-col-4\">\n<div class=\"subheading\">Last Updated<\/div>\n<\/div>\n<div class=\"grid-col-8\">Jan 05, 2026<\/div>\n<\/div>\n<div class=\"grid-row margin-bottom-3\">\n<div class=\"grid-col-4\">\n<div class=\"subheading\">Editor<\/div>\n<\/div>\n<div class=\"grid-col-8\">Andrea Gianopoulos<\/div>\n<\/div>\n<div class=\"grid-row\">\n<div class=\"grid-col-4\">\n<div class=\"subheading\">Location<\/div>\n<\/div>\n<div class=\"grid-col-8\"><a class=\"hds-location-tag-name\" href=\"https:\/\/nasa.gov\/goddard\" rel=\"noopener\"><span class=\"hds-meta-heading\">NASA Goddard Space Flight Center<\/span><\/a><\/div>\n<\/div>\n<div class=\"grid-row margin-y-3\">\n<div class=\"grid-col-4\">\n<div class=\"subheading\">Contact<\/div>\n<\/div>\n<div class=\"grid-col-8\">\n<div class=\"margin-bottom-3\">\n<div class=\"heading-16 padding-bottom-1 border-bottom margin-bottom-2\">Media<\/div>\n<div class=\"cnd-extra-left-wysiwyg\">\n<p><strong>Claire Andreoli<\/strong><br \/>\nNASA\u2019s Goddard Space Flight Center<br \/>\nGreenbelt, Maryland<br \/>\n<a href=\"mailto:claire.andreoli@nasa.gov\">claire.andreoli@nasa.gov<\/a><\/p>\n<p><strong>Amy Oliver<\/strong><br \/>\nCenter for Astrophysics | Harvard & Smithsonian<br \/>\nCambridge, Massachusetts<\/p>\n<p><strong>Christine Pulliam<\/strong><br \/>\nSpace Telescope Science Institute<br \/>\nBaltimore, Maryland<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<div class=\"grid-col-12 desktop:grid-col-5 padding-right-4 margin-bottom-5 desktop:margin-bottom-0\">\n<div class=\"padding-top-3 border-top-1px border-color-carbon-black \">\n<div class=\"margin-bottom-2\">\n<h2 class=\"heading-14\">Related Terms<\/h2>\n<\/div>\n<ul class=\"article-tags\">\n<li class=\"article-tag\"><a href=\"https:\/\/science.nasa.gov\/mission\/hubble\" rel=\"noopener\">Hubble Space Telescope<\/a><\/li>\n<li class=\"article-tag\"><a href=\"https:\/\/science.nasa.gov\/astrophysics\/\" rel=\"noopener\">Astrophysics<\/a><\/li>\n<li class=\"article-tag\"><a href=\"https:\/\/science.nasa.gov\/astrophysics\/\" rel=\"noopener\">Astrophysics Division<\/a><\/li>\n<li class=\"article-tag\"><a href=\"https:\/\/science.nasa.gov\/category\/universe\/stars\/binary-stars\/\" rel=\"noopener\">Binary Stars<\/a><\/li>\n<li class=\"article-tag\"><a href=\"https:\/\/www.nasa.gov\/goddard\/\" rel=\"noopener\">Goddard Space Flight Center<\/a><\/li>\n<li class=\"article-tag\"><a href=\"https:\/\/science.nasa.gov\/universe\/stars\/\" rel=\"noopener\">Stars<\/a><\/li>\n<li class=\"article-tag\"><a href=\"https:\/\/science.nasa.gov\/universe\/\" rel=\"noopener\">The Universe<\/a><\/li>\n<\/ul>\n<\/div>\n<\/div>\n<\/div>\n<\/section>\n<\/div>\n<div class=\"hds-topic-cards nasa-gb-align-full maxw-full width-full padding-y-6 padding-x-3 color-mode-dark hds-module hds-module-full alignfull wp-block-nasa-blocks-topic-cards\">\n<div class=\"grid-container grid-container-block-lg padding-x-0\">\n<div class=\"grid-row flex-align-center margin-bottom-3\">\n<div class=\"desktop:grid-col-8 margin-bottom-2 desktop:margin-bottom-0\">\n<div class=\"label color-carbon-60 margin-bottom-2\">Keep Exploring<\/div>\n<h2 class=\"heading-36 line-height-sm\">Discover More Topics From Hubble<\/h2>\n<\/div>\n<\/div>\n<div class=\"grid-row grid-gap-2 hds-topic-cards-wrapper\">\n\t\t\t\t\t<a href=\"https:\/\/science.nasa.gov\/mission\/hubble\/\" class=\"mobile:grid-col-12 tablet:grid-col-6 desktop:grid-col-3 topic-card margin-bottom-4 desktop:margin-bottom-0\" rel=\"noopener\"><\/p>\n<div class=\"hds-topic-card hds-cover-wrapper cover-hover-zoom bg-carbon-black\">\n<div class=\"skrim-overlay skrim-overlay-dark skrim-left mobile-skrim-top padding-3 display-flex flex-align-end flex-justify-start z-200\">\n<div>\n<h3 class=\"hds-topic-card-heading heading-29 color-spacesuit-white line-height-sm margin-top-0 margin-bottom-1\">\n\t\t\t\t\t\t\t\t<span>Hubble Space Telescope<\/span><br \/>\n\t\t\t\t\t\t\t\t<svg viewbox=\"0 0 32 32\" fill=\"none\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><circle class=\"color-nasa-red\" cx=\"16\" cy=\"16\" r=\"16\"><\/circle><path d=\"M8 16.956h12.604l-3.844 4.106 1.252 1.338L24 16l-5.988-6.4-1.252 1.338 3.844 4.106H8v1.912z\" class=\"color-spacesuit-white\"><\/path><\/svg><br \/>\n\t\t\t\t\t\t\t<\/h3>\n<p class=\"margin-bottom-0 margin-top-2 color-carbon-20-important\">Since its 1990 launch, the Hubble Space Telescope has changed our fundamental understanding of the universe.<\/p>\n<\/div>\n<\/div>\n<figure class=\"hds-media-background \"><img decoding=\"async\" width=\"1920\" height=\"1080\" src=\"https:\/\/assets.science.nasa.gov\/content\/dam\/science\/missions\/hubble\/videos\/hubble-banner-animation-nov-2025-compressed.gif?w=1920&h=1080&fit=clip&crop=faces%2Cfocalpoint\" class=\"attachment-1536x1536 size-1536x1536\" alt=\"\" block_context=\"nasa-block\" loading=\"lazy\"><\/figure>\n<\/div>\n<p><\/a><br \/>\n\t\t\t\t\t<a href=\"https:\/\/science.nasa.gov\/mission\/hubble\/science\/science-highlights\/\" class=\"mobile:grid-col-12 tablet:grid-col-6 desktop:grid-col-3 topic-card margin-bottom-4 desktop:margin-bottom-0\" rel=\"noopener\"><\/p>\n<div class=\"hds-topic-card hds-cover-wrapper cover-hover-zoom bg-carbon-black\">\n<div class=\"skrim-overlay skrim-overlay-dark skrim-left mobile-skrim-top padding-3 display-flex flex-align-end flex-justify-start z-200\">\n<div>\n<p class=\"hds-topic-card-heading heading-29 color-spacesuit-white line-height-sm margin-top-0 margin-bottom-1\">\n\t\t\t\t\t\t\t\t<span>Hubble Science Highlights<\/span><br \/>\n\t\t\t\t\t\t\t\t<svg viewbox=\"0 0 32 32\" fill=\"none\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><circle class=\"color-nasa-red\" cx=\"16\" cy=\"16\" r=\"16\"><\/circle><path d=\"M8 16.956h12.604l-3.844 4.106 1.252 1.338L24 16l-5.988-6.4-1.252 1.338 3.844 4.106H8v1.912z\" class=\"color-spacesuit-white\"><\/path><\/svg>\n\t\t\t\t\t\t\t<\/p>\n<\/div>\n<\/div>\n<figure class=\"hds-media-background \"><img decoding=\"async\" width=\"539\" height=\"565\" src=\"https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/astro\/universe\/internal_resources\/462\/Pillars_of_Creation-1.jpeg?w=539&h=565&fit=clip&crop=faces%2Cfocalpoint\" class=\"attachment-1536x1536 size-1536x1536\" alt=\"\" block_context=\"nasa-block\" loading=\"lazy\"><\/figure>\n<\/div>\n<p><\/a><br \/>\n\t\t\t\t\t<a href=\"https:\/\/science.nasa.gov\/mission\/hubble\/multimedia\/hubble-images\/\" class=\"mobile:grid-col-12 tablet:grid-col-6 desktop:grid-col-3 topic-card margin-bottom-4 desktop:margin-bottom-0\" rel=\"noopener\"><\/p>\n<div class=\"hds-topic-card hds-cover-wrapper cover-hover-zoom bg-carbon-black\">\n<div class=\"skrim-overlay skrim-overlay-dark skrim-left mobile-skrim-top padding-3 display-flex flex-align-end flex-justify-start z-200\">\n<div>\n<p class=\"hds-topic-card-heading heading-29 color-spacesuit-white line-height-sm margin-top-0 margin-bottom-1\">\n\t\t\t\t\t\t\t\t<span>Hubble Images<\/span><br \/>\n\t\t\t\t\t\t\t\t<svg viewbox=\"0 0 32 32\" fill=\"none\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><circle class=\"color-nasa-red\" cx=\"16\" cy=\"16\" r=\"16\"><\/circle><path d=\"M8 16.956h12.604l-3.844 4.106 1.252 1.338L24 16l-5.988-6.4-1.252 1.338 3.844 4.106H8v1.912z\" class=\"color-spacesuit-white\"><\/path><\/svg>\n\t\t\t\t\t\t\t<\/p>\n<\/div>\n<\/div>\n<figure class=\"hds-media-background \"><img decoding=\"async\" width=\"1120\" height=\"1120\" src=\"https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/releases\/2024\/07\/STScI-01J1X1RNTC893XMKJREG898ZXB.tif?w=1120&h=1120&fit=clip&crop=faces%2Cfocalpoint\" class=\"attachment-1536x1536 size-1536x1536\" alt=\"\" block_context=\"nasa-block\" loading=\"lazy\" srcset=\"https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/releases\/2024\/07\/STScI-01J1X1RNTC893XMKJREG898ZXB.tif?w=1120&h=1120&fit=crop&crop=faces%2Cfocalpoint 1120w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/releases\/2024\/07\/STScI-01J1X1RNTC893XMKJREG898ZXB.tif?w=150&h=150&fit=crop&crop=faces%2Cfocalpoint 150w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/releases\/2024\/07\/STScI-01J1X1RNTC893XMKJREG898ZXB.tif?w=300&h=300&fit=crop&crop=faces%2Cfocalpoint 300w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/releases\/2024\/07\/STScI-01J1X1RNTC893XMKJREG898ZXB.tif?w=768&h=768&fit=crop&crop=faces%2Cfocalpoint 768w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/releases\/2024\/07\/STScI-01J1X1RNTC893XMKJREG898ZXB.tif?w=1024&h=1024&fit=crop&crop=faces%2Cfocalpoint 1024w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/releases\/2024\/07\/STScI-01J1X1RNTC893XMKJREG898ZXB.tif?w=50&h=50&fit=crop&crop=faces%2Cfocalpoint 50w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/releases\/2024\/07\/STScI-01J1X1RNTC893XMKJREG898ZXB.tif?w=100&h=100&fit=crop&crop=faces%2Cfocalpoint 100w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/releases\/2024\/07\/STScI-01J1X1RNTC893XMKJREG898ZXB.tif?w=200&h=200&fit=crop&crop=faces%2Cfocalpoint 200w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/releases\/2024\/07\/STScI-01J1X1RNTC893XMKJREG898ZXB.tif?w=400&h=400&fit=crop&crop=faces%2Cfocalpoint 400w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/releases\/2024\/07\/STScI-01J1X1RNTC893XMKJREG898ZXB.tif?w=600&h=600&fit=crop&crop=faces%2Cfocalpoint 600w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/releases\/2024\/07\/STScI-01J1X1RNTC893XMKJREG898ZXB.tif?w=900&h=900&fit=crop&crop=faces%2Cfocalpoint 900w\" sizes=\"auto, (max-width: 1120px) 100vw, 1120px\"><\/figure>\n<\/div>\n<p><\/a><br \/>\n\t\t\t\t\t<a href=\"https:\/\/science.nasa.gov\/?post_type=mission&p=53188\" class=\"mobile:grid-col-12 tablet:grid-col-6 desktop:grid-col-3 topic-card margin-bottom-4 desktop:margin-bottom-0\" rel=\"noopener\"><\/p>\n<div class=\"hds-topic-card hds-cover-wrapper cover-hover-zoom bg-carbon-black\">\n<div class=\"skrim-overlay skrim-overlay-dark skrim-left mobile-skrim-top padding-3 display-flex flex-align-end flex-justify-start z-200\">\n<div>\n<p class=\"hds-topic-card-heading heading-29 color-spacesuit-white line-height-sm margin-top-0 margin-bottom-1\">\n\t\t\t\t\t\t\t\t<span>Hubble News<\/span><br \/>\n\t\t\t\t\t\t\t\t<svg viewbox=\"0 0 32 32\" fill=\"none\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><circle class=\"color-nasa-red\" cx=\"16\" cy=\"16\" r=\"16\"><\/circle><path d=\"M8 16.956h12.604l-3.844 4.106 1.252 1.338L24 16l-5.988-6.4-1.252 1.338 3.844 4.106H8v1.912z\" class=\"color-spacesuit-white\"><\/path><\/svg>\n\t\t\t\t\t\t\t<\/p>\n<\/div>\n<\/div>\n<figure class=\"hds-media-background \"><img decoding=\"async\" width=\"1651\" height=\"1651\" src=\"https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/releases\/2005\/02\/STScI-01EVT8D2PRXPF512PH8C8DCXXM.tif?w=1651&h=1651&fit=clip&crop=faces%2Cfocalpoint\" class=\"attachment-1536x1536 size-1536x1536\" alt=\"\" block_context=\"nasa-block\" loading=\"lazy\" srcset=\"https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/releases\/2005\/02\/STScI-01EVT8D2PRXPF512PH8C8DCXXM.tif?w=1651&h=1651&fit=crop&crop=faces%2Cfocalpoint 1651w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/releases\/2005\/02\/STScI-01EVT8D2PRXPF512PH8C8DCXXM.tif?w=150&h=150&fit=crop&crop=faces%2Cfocalpoint 150w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/releases\/2005\/02\/STScI-01EVT8D2PRXPF512PH8C8DCXXM.tif?w=300&h=300&fit=crop&crop=faces%2Cfocalpoint 300w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/releases\/2005\/02\/STScI-01EVT8D2PRXPF512PH8C8DCXXM.tif?w=768&h=768&fit=crop&crop=faces%2Cfocalpoint 768w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/releases\/2005\/02\/STScI-01EVT8D2PRXPF512PH8C8DCXXM.tif?w=1024&h=1024&fit=crop&crop=faces%2Cfocalpoint 1024w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/releases\/2005\/02\/STScI-01EVT8D2PRXPF512PH8C8DCXXM.tif?w=1536&h=1536&fit=crop&crop=faces%2Cfocalpoint 1536w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/releases\/2005\/02\/STScI-01EVT8D2PRXPF512PH8C8DCXXM.tif?w=50&h=50&fit=crop&crop=faces%2Cfocalpoint 50w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/releases\/2005\/02\/STScI-01EVT8D2PRXPF512PH8C8DCXXM.tif?w=100&h=100&fit=crop&crop=faces%2Cfocalpoint 100w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/releases\/2005\/02\/STScI-01EVT8D2PRXPF512PH8C8DCXXM.tif?w=200&h=200&fit=crop&crop=faces%2Cfocalpoint 200w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/releases\/2005\/02\/STScI-01EVT8D2PRXPF512PH8C8DCXXM.tif?w=400&h=400&fit=crop&crop=faces%2Cfocalpoint 400w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/releases\/2005\/02\/STScI-01EVT8D2PRXPF512PH8C8DCXXM.tif?w=600&h=600&fit=crop&crop=faces%2Cfocalpoint 600w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/releases\/2005\/02\/STScI-01EVT8D2PRXPF512PH8C8DCXXM.tif?w=900&h=900&fit=crop&crop=faces%2Cfocalpoint 900w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/releases\/2005\/02\/STScI-01EVT8D2PRXPF512PH8C8DCXXM.tif?w=1200&h=1200&fit=crop&crop=faces%2Cfocalpoint 1200w\" sizes=\"auto, (max-width: 1651px) 100vw, 1651px\"><\/figure>\n<\/div>\n<p><\/a>\n\t\t\t\t<\/div>\n<\/div>\n<\/div>\n<p class=\"wpematico_credit\"><small>Powered by <a href=\"http:\/\/www.wpematico.com\" target=\"_blank\">WPeMatico<\/a><\/small><\/p>\n<p><a href=\"https:\/\/science.nasa.gov\/missions\/hubble\/nasa-hubble-helps-detect-wake-of-betelgeuses-elusive-companion-star\/\" target=\"_blank\" rel=\"noopener\">Get The Details…<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Using new observations from NASA\u2019s Hubble Space Telescope and ground-based observatories, astronomers tracked the influence of a recently discovered companion star, Siwarha, on the gas around Betelgeuse. The research, from scientists at the Center for Astrophysics | Harvard & Smithsonian (CfA), reveals a trail of dense gas swirling through Betelgeuse\u2019s vast, extended atmosphere, shedding light [\u2026] <a class=\"continue-reading-link\" href=\"https:\/\/zobi.alcowep.com\/bourtagshdrevxnls658739\/nasa-hubble-helps-detect-wake-of-betelgeuses-elusive-companion-star\/\"> Continue reading <span class=\"meta-nav\">→ <\/span><\/a><\/p>\n<div class='heateorSssClear'><\/div><div class='heateor_sss_sharing_container heateor_sss_horizontal_sharing' data-heateor-sss-href='https:\/\/zobi.alcowep.com\/bourtagshdrevxnls658739\/nasa-hubble-helps-detect-wake-of-betelgeuses-elusive-companion-star\/'><div class='heateor_sss_sharing_title' style=\"font-weight:bold\" >Spread the love<\/div><div class=\"heateor_sss_sharing_ul\"><a aria-label=\"Facebook\" class=\"heateor_sss_facebook\" 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The results of the new study were presented Monday at a news conference at the 247th meeting<\/a> of the American Astronomical Society in Phoenix and are accepted for publication in The Astrophysical Journal<\/a>.<\/p>\nThe team detected Siwarha\u2019s wake by carefully tracking changes in the star\u2019s light over nearly eight years. These changes show the effects of the previously unconfirmed companion as it plows through the outer atmosphere of Betelgeuse. This discovery resolves one of the biggest mysteries about the giant star, helping scientists to explain how it behaves and evolves while opening new doors to understanding other massive stars nearing the end of their lives.<\/p>\nLocated roughly 650 light-years away from Earth in the constellation Orion, Betelgeuse is a red supergiant star so large that more than 400 million Suns could fit inside. Because of its enormous size and proximity, Betelgeuse is one of the few stars whose surface and surrounding atmosphere can be directly observed by astronomers, making it an important and accessible laboratory for studying how giant stars age, lose mass, and eventually explode as supernovae.<\/p>\n\n\n\n<\/a><\/figure>\nThis artist\u2019s concept shows the red supergiant star Betelgeuse and an orbiting companion star. The companion, which is orbiting clockwise from this point of view, generates a dense wake of gas that expands outward. It is so close to Betelgeuse that it is passing through the extended outer atmosphere of the supergiant. The companion star is not to scale; it would be a pinprick compared to Betelgeuse, which is hundreds of times larger. The companion\u2019s distance from Betelgeuse is to scale relative to the diameter of Betelgeuse.<\/div>\nArtwork: NASA, ESA, Elizabeth Wheatley (STScI); Science: Andrea Dupree (CfA)<\/div>\n<\/figcaption><\/div>\n<\/div>\n<\/div>\nUsing NASA\u2019s Hubble and ground-based telescopes at the Fred Lawrence Whipple Observatory and Roque de Los Muchachos Observatory, the team was able to see a pattern of changes in Betelgeuse, which provided clear evidence of a long-suspected companion star and its impact on the red supergiant\u2019s outer atmosphere. Those include changes in the star\u2019s spectrum, or the specific colors of light given off by different elements, and the speed and direction of gases in the outer atmosphere due to a trail of denser material, or wake. This trail appears just after the companion crosses in front of Betelgeuse every six years, or about 2,100 days, confirming theoretical models.<\/p>\n\u201cIt\u2019s a bit like a boat moving through water. The companion star creates a ripple effect in Betelgeuse\u2019s atmosphere that we can actually see in the data,\u201d said Andrea Dupree, an astronomer at the CfA, and the lead study author. \u201cFor the first time, we\u2019re seeing direct signs of this wake, or trail of gas, confirming that Betelgeuse really does have a hidden companion shaping its appearance and behavior.\u201d<\/p>\nFor decades, astronomers have tracked changes in Betelgeuse\u2019s brightness and surface features in hopes of figuring out why the star behaves the way it does. Curiosity intensified after the giant star appeared to \u201csneeze\u201d<\/a> and became unexpectedly faint in 2020. Two distinct periods of variation in the star were especially puzzling for scientists: a short 400-day cycle, recently attributed to pulsations within the star itself, and the long, 2,100-day secondary period.<\/p>\n\n\n\n<\/a><\/figure>\nScientists used NASA\u2019s Hubble Space Telescope to look for evidence of a wake being generated by a companion star orbiting Betelgeuse. The team found a noticeable difference in light shown in the lefthand peak when the companion star was at different points in its orbit.<\/div>\nIllustration: NASA, ESA, Elizabeth Wheatley (STScI); Science: Andrea Dupree (CfA)<\/div>\n<\/figcaption><\/div>\n<\/div>\n<\/div>\nUntil now, scientists have considered everything from large convection cells and clouds of dust to magnetic activity, and the possibility of a hidden companion star. Recent studies concluded that the long secondary period was best explained by the presence of a low-mass companion orbiting deep within Betelgeuse\u2019s atmosphere, and another team of scientists reported a possible detection, but until now, astronomers lacked the evidence to prove what they believed was happening. Now, for the first time, they have firm evidence that a companion is disrupting the atmosphere of this supergiant star.<\/p>\n\u201cThe idea that Betelgeuse had an undetected companion has been gaining in popularity for the past several years, but without direct evidence, it was an unproven theory,\u201d said Dupree. \u201cWith this new direct evidence, Betelgeuse gives us a front-row seat to watch how a giant star changes over time. Finding the wake from its companion means we can now understand how stars like this evolve, shed material, and eventually explode as supernovae.\u201d<\/p>\nWith Betelgeuse now eclipsing its companion from our point of view, astronomers are planning new observations for its next emergence in 2027. This breakthrough may also help explain similar mysteries in other giant and supergiant stars.<\/p>\nThe Hubble Space Telescope has been operating for over three decades and continues to make ground-breaking discoveries that shape our fundamental understanding of the universe. Hubble is a project of international cooperation between NASA and ESA (European Space Agency). NASA\u2019s Goddard Space Flight Center in Greenbelt, Maryland, manages the telescope and mission operations. Lockheed Martin Space, based in Denver, also supports mission operations at Goddard. 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The disk of a red-orange star is in the center. It is surrounded by a diffuse orange cloud representing its extended atmosphere. Below it about one stellar diameter away is a yellow dot representing a smaller companion star. From the companion, a dark red cloud wraps around in a counterclockwise direction. It begins very narrow and expands as it gets further from the companion, finally disappearing at the outer edge of the diffuse orange cloud around 10 ou2019clock. The words u201cartistu2019s conceptu201d are at lower right.\" block_context=\"nasa-block\" loading=\"lazy\" srcset=\"https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/releases\/2026\/01\/STScI-01KDQQ7JYKDRX3AYTJ2BHCAZ03.jpg?w=3840&h=2160&fit=crop&crop=faces%2Cfocalpoint 3840w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/releases\/2026\/01\/STScI-01KDQQ7JYKDRX3AYTJ2BHCAZ03.jpg?w=300&h=169&fit=crop&crop=faces%2Cfocalpoint 300w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/releases\/2026\/01\/STScI-01KDQQ7JYKDRX3AYTJ2BHCAZ03.jpg?w=768&h=432&fit=crop&crop=faces%2Cfocalpoint 768w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/releases\/2026\/01\/STScI-01KDQQ7JYKDRX3AYTJ2BHCAZ03.jpg?w=1024&h=576&fit=crop&crop=faces%2Cfocalpoint 1024w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/releases\/2026\/01\/STScI-01KDQQ7JYKDRX3AYTJ2BHCAZ03.jpg?w=1536&h=864&fit=crop&crop=faces%2Cfocalpoint 1536w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/releases\/2026\/01\/STScI-01KDQQ7JYKDRX3AYTJ2BHCAZ03.jpg?w=2048&h=1152&fit=crop&crop=faces%2Cfocalpoint 2048w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/releases\/2026\/01\/STScI-01KDQQ7JYKDRX3AYTJ2BHCAZ03.jpg?w=400&h=225&fit=crop&crop=faces%2Cfocalpoint 400w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/releases\/2026\/01\/STScI-01KDQQ7JYKDRX3AYTJ2BHCAZ03.jpg?w=600&h=338&fit=crop&crop=faces%2Cfocalpoint 600w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/releases\/2026\/01\/STScI-01KDQQ7JYKDRX3AYTJ2BHCAZ03.jpg?w=900&h=506&fit=crop&crop=faces%2Cfocalpoint 900w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/releases\/2026\/01\/STScI-01KDQQ7JYKDRX3AYTJ2BHCAZ03.jpg?w=1200&h=675&fit=crop&crop=faces%2Cfocalpoint 1200w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/releases\/2026\/01\/STScI-01KDQQ7JYKDRX3AYTJ2BHCAZ03.jpg?w=2000&h=1125&fit=crop&crop=faces%2Cfocalpoint 2000w\" sizes=\"auto, (max-width: 3840px) 100vw, 3840px\"><\/figure>\n<\/div>\n<\/div>\n<\/div>\n<div class=\"grid-col-8 desktop:grid-col-10 padding-left-3 desktop:padding-left-0\">\n<div class=\"grid-row flex-align-center\">\n<div class=\"grid-col-12 desktop:grid-col-6\">\n<h2 class=\"heading-36 margin-0\">Betelgeuse and Wake of its Companion Star (Artist\u2019s Concept)<\/h2>\n<\/div>\n<div class=\"grid-col-12 desktop:grid-col-6\">\n<p class=\"p-md margin-0 color-carbon-black-important\">This artist\u2019s concept shows the red supergiant star Betelgeuse and an orbiting companion star. The companion, which is orbiting clockwise from this point of view, generates a dusty wake that expands outward.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<div class=\"grid-col-2 desktop:grid-col-1 display-flex flex-justify-end\">\n\t\t\t\t\t\t<a href=\"https:\/\/science.nasa.gov\/asset\/hubble\/betelgeuse-and-wake-of-its-companion-star-artists-concept\/\" target=\"\" aria-label=\"Betelgeuse and Wake of its Companion Star (Artist's Concept)\" class=\"link-external-false\" rel=\"noopener\"><br \/>\n <svg class=\"hds-featured-link-list-button margin-left-auto margin-right-0\" viewbox=\"0 0 32 32\" fill=\"none\">\n <circle class=\"color-nasa-red\" cx=\"16\" cy=\"16\" r=\"16\"><\/circle><path d=\"M8 16.956h12.604l-3.844 4.106 1.252 1.338L24 16l-5.988-6.4-1.252 1.338 3.844 4.106H8v1.912z\" class=\"color-spacesuit-white\"><\/path>\n <\/svg><br \/>\n\t\t\t\t\t\t<\/a>\n\t\t\t\t\t<\/div>\n<\/div>\n<\/div>\n<div class=\"grid-row padding-y-2 border-top-1px border-color-carbon-30-important\">\n<div class=\"grid-row featured-link-list-row width-full flex-align-center\">\n<div class=\"grid-col-2 desktop:grid-col-1 tablet:padding-right-3 desktop:padding-right-5\">\n<div class=\"width-full\">\n<div class=\"hds-cover-wrapper width-full ratio-1x1 radius-pill overflow-hidden\">\n<figure class=\"hds-media-background \"><img decoding=\"async\" width=\"3840\" height=\"2255\" src=\"https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/releases\/2026\/01\/STScI-01KDNZZAJQ5ZAZJK3FM5Y0RCCN.jpg?w=3840&h=2255&fit=clip&crop=faces%2Cfocalpoint\" class=\"attachment-thumbnail size-thumbnail\" alt=\"A graphic titled u201cBetelgeuse: Effect of Companion Star Wakeu201d with a subtitle u201cSpectrum of Light Emitted by Iron (Fe II).u201d A graph plots brightness versus wavelength of light.\" block_context=\"nasa-block\" loading=\"lazy\" srcset=\"https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/releases\/2026\/01\/STScI-01KDNZZAJQ5ZAZJK3FM5Y0RCCN.jpg?w=3840&h=2255&fit=crop&crop=faces%2Cfocalpoint 3840w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/releases\/2026\/01\/STScI-01KDNZZAJQ5ZAZJK3FM5Y0RCCN.jpg?w=300&h=176&fit=crop&crop=faces%2Cfocalpoint 300w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/releases\/2026\/01\/STScI-01KDNZZAJQ5ZAZJK3FM5Y0RCCN.jpg?w=768&h=451&fit=crop&crop=faces%2Cfocalpoint 768w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/releases\/2026\/01\/STScI-01KDNZZAJQ5ZAZJK3FM5Y0RCCN.jpg?w=1024&h=601&fit=crop&crop=faces%2Cfocalpoint 1024w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/releases\/2026\/01\/STScI-01KDNZZAJQ5ZAZJK3FM5Y0RCCN.jpg?w=1536&h=902&fit=crop&crop=faces%2Cfocalpoint 1536w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/releases\/2026\/01\/STScI-01KDNZZAJQ5ZAZJK3FM5Y0RCCN.jpg?w=2048&h=1203&fit=crop&crop=faces%2Cfocalpoint 2048w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/releases\/2026\/01\/STScI-01KDNZZAJQ5ZAZJK3FM5Y0RCCN.jpg?w=400&h=235&fit=crop&crop=faces%2Cfocalpoint 400w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/releases\/2026\/01\/STScI-01KDNZZAJQ5ZAZJK3FM5Y0RCCN.jpg?w=600&h=352&fit=crop&crop=faces%2Cfocalpoint 600w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/releases\/2026\/01\/STScI-01KDNZZAJQ5ZAZJK3FM5Y0RCCN.jpg?w=900&h=529&fit=crop&crop=faces%2Cfocalpoint 900w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/releases\/2026\/01\/STScI-01KDNZZAJQ5ZAZJK3FM5Y0RCCN.jpg?w=1200&h=705&fit=crop&crop=faces%2Cfocalpoint 1200w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/releases\/2026\/01\/STScI-01KDNZZAJQ5ZAZJK3FM5Y0RCCN.jpg?w=2000&h=1174&fit=crop&crop=faces%2Cfocalpoint 2000w\" sizes=\"auto, (max-width: 3840px) 100vw, 3840px\"><\/figure>\n<\/div>\n<\/div>\n<\/div>\n<div class=\"grid-col-8 desktop:grid-col-10 padding-left-3 desktop:padding-left-0\">\n<div class=\"grid-row flex-align-center\">\n<div class=\"grid-col-12 desktop:grid-col-6\">\n<h2 class=\"heading-36 margin-0\">Betelgeuse: Effect of Companion Star Wake<\/h2>\n<\/div>\n<div class=\"grid-col-12 desktop:grid-col-6\">\n<p class=\"p-md margin-0 color-carbon-black-important\">Scientists used NASA\u2019s Hubble Space Telescope to look for evidence of a wake being generated by a companion star orbiting Betelgeuse. The team found a noticeable difference in light shown in the lefthand peak when the companion star was at different points in its orbit.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<div class=\"grid-col-2 desktop:grid-col-1 display-flex flex-justify-end\">\n\t\t\t\t\t\t<a href=\"https:\/\/science.nasa.gov\/asset\/hubble\/betelgeuse-effect-of-companion-star-wake\/\" target=\"\" aria-label=\"Betelgeuse: Effect of Companion Star Wake\" class=\"link-external-false\" rel=\"noopener\"><br \/>\n <svg class=\"hds-featured-link-list-button margin-left-auto margin-right-0\" viewbox=\"0 0 32 32\" fill=\"none\">\n <circle class=\"color-nasa-red\" cx=\"16\" cy=\"16\" r=\"16\"><\/circle><path d=\"M8 16.956h12.604l-3.844 4.106 1.252 1.338L24 16l-5.988-6.4-1.252 1.338 3.844 4.106H8v1.912z\" class=\"color-spacesuit-white\"><\/path>\n <\/svg><br \/>\n\t\t\t\t\t\t<\/a>\n\t\t\t\t\t<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<p>\n<\/p>\n<div class=\"nasa-gb-align-full width-full maxw-full padding-x-3 padding-y-0 nasa_template_article_b hds-module hds-module-full alignfull wp-block-nasa-blocks-credits-and-details\">\n<section class=\"padding-x-0 padding-top-5 padding-bottom-2 desktop:padding-top-7 desktop:padding-bottom-9\">\n<div class=\"grid-row grid-container maxw-widescreen padding-0\">\n<div class=\"grid-col-12 desktop:grid-col-2 padding-right-4 margin-bottom-5 desktop:margin-bottom-0\">\n<div class=\"padding-top-3 border-top-1px border-color-carbon-black\">\n<div class=\"margin-bottom-2\">\n<h2 class=\"heading-14\">Share<\/h2>\n<\/div>\n<div class=\"padding-bottom-2\">\n<ul class=\"social-icons social-icons-round\">\n<li class=\"social-icon social-icon-x\">\n\t\t\t\t\t\t\t<a href=\"https:\/\/x.com\/intent\/tweet?via=NASA&text=NASA%20Hubble%20Helps%20Detect%20%26%238216%3BWake%26%238217%3B%20of%20Betelgeuse%E2%80%99s%20Elusive%20Companion%20Star&url=https%3A%2F%2Fscience.nasa.gov%2Fmissions%2Fhubble%2Fnasa-hubble-helps-detect-wake-of-betelgeuses-elusive-companion-star%2F\" 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href=\"https:\/\/science.nasa.gov\/feed\/\" aria-label=\"Subscribe to RSS feed.\"><br \/>\n\t\t\t\t\t\t\t\t<svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewbox=\"0 0 800 800\" aria-hidden=\"true\"><path d=\"M493 652H392c0-134-111-244-244-244V307c189 0 345 156 345 345zm71 0c0-228-188-416-416-416V132c285 0 520 235 520 520z\"><\/path><circle cx=\"219\" cy=\"581\" r=\"71\"><\/circle><\/svg><br \/>\n\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t<\/li>\n<\/ul>\n<\/div>\n<\/div>\n<\/div>\n<div class=\"grid-col-12 desktop:grid-col-5 padding-right-4 margin-bottom-5 desktop:margin-bottom-0\">\n<div class=\"padding-top-3 border-top-1px border-color-carbon-black\">\n<div class=\"margin-bottom-2\">\n<h2 class=\"heading-14\">Details<\/h2>\n<\/div>\n<div class=\"grid-row margin-bottom-3\">\n<div class=\"grid-col-4\">\n<div class=\"subheading\">Last Updated<\/div>\n<\/div>\n<div class=\"grid-col-8\">Jan 05, 2026<\/div>\n<\/div>\n<div class=\"grid-row margin-bottom-3\">\n<div class=\"grid-col-4\">\n<div class=\"subheading\">Editor<\/div>\n<\/div>\n<div class=\"grid-col-8\">Andrea Gianopoulos<\/div>\n<\/div>\n<div class=\"grid-row\">\n<div class=\"grid-col-4\">\n<div class=\"subheading\">Location<\/div>\n<\/div>\n<div class=\"grid-col-8\"><a class=\"hds-location-tag-name\" href=\"https:\/\/nasa.gov\/goddard\" rel=\"noopener\"><span class=\"hds-meta-heading\">NASA Goddard Space Flight Center<\/span><\/a><\/div>\n<\/div>\n<div class=\"grid-row margin-y-3\">\n<div class=\"grid-col-4\">\n<div class=\"subheading\">Contact<\/div>\n<\/div>\n<div class=\"grid-col-8\">\n<div class=\"margin-bottom-3\">\n<div class=\"heading-16 padding-bottom-1 border-bottom margin-bottom-2\">Media<\/div>\n<div class=\"cnd-extra-left-wysiwyg\">\n<p><strong>Claire Andreoli<\/strong><br \/>\nNASA\u2019s Goddard Space Flight Center<br \/>\nGreenbelt, Maryland<br \/>\n<a href=\"mailto:claire.andreoli@nasa.gov\">claire.andreoli@nasa.gov<\/a><\/p>\n<p><strong>Amy Oliver<\/strong><br \/>\nCenter for Astrophysics | Harvard & Smithsonian<br \/>\nCambridge, Massachusetts<\/p>\n<p><strong>Christine Pulliam<\/strong><br \/>\nSpace Telescope Science Institute<br \/>\nBaltimore, Maryland<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<div class=\"grid-col-12 desktop:grid-col-5 padding-right-4 margin-bottom-5 desktop:margin-bottom-0\">\n<div class=\"padding-top-3 border-top-1px border-color-carbon-black \">\n<div class=\"margin-bottom-2\">\n<h2 class=\"heading-14\">Related Terms<\/h2>\n<\/div>\n<ul class=\"article-tags\">\n<li class=\"article-tag\"><a href=\"https:\/\/science.nasa.gov\/mission\/hubble\" rel=\"noopener\">Hubble Space Telescope<\/a><\/li>\n<li class=\"article-tag\"><a href=\"https:\/\/science.nasa.gov\/astrophysics\/\" rel=\"noopener\">Astrophysics<\/a><\/li>\n<li class=\"article-tag\"><a href=\"https:\/\/science.nasa.gov\/astrophysics\/\" rel=\"noopener\">Astrophysics Division<\/a><\/li>\n<li class=\"article-tag\"><a href=\"https:\/\/science.nasa.gov\/category\/universe\/stars\/binary-stars\/\" rel=\"noopener\">Binary Stars<\/a><\/li>\n<li class=\"article-tag\"><a href=\"https:\/\/www.nasa.gov\/goddard\/\" rel=\"noopener\">Goddard Space Flight Center<\/a><\/li>\n<li class=\"article-tag\"><a href=\"https:\/\/science.nasa.gov\/universe\/stars\/\" rel=\"noopener\">Stars<\/a><\/li>\n<li class=\"article-tag\"><a href=\"https:\/\/science.nasa.gov\/universe\/\" rel=\"noopener\">The Universe<\/a><\/li>\n<\/ul>\n<\/div>\n<\/div>\n<\/div>\n<\/section>\n<\/div>\n<div class=\"hds-topic-cards nasa-gb-align-full maxw-full width-full padding-y-6 padding-x-3 color-mode-dark hds-module hds-module-full alignfull wp-block-nasa-blocks-topic-cards\">\n<div class=\"grid-container grid-container-block-lg padding-x-0\">\n<div class=\"grid-row flex-align-center margin-bottom-3\">\n<div class=\"desktop:grid-col-8 margin-bottom-2 desktop:margin-bottom-0\">\n<div class=\"label color-carbon-60 margin-bottom-2\">Keep Exploring<\/div>\n<h2 class=\"heading-36 line-height-sm\">Discover More Topics From Hubble<\/h2>\n<\/div>\n<\/div>\n<div class=\"grid-row grid-gap-2 hds-topic-cards-wrapper\">\n\t\t\t\t\t<a href=\"https:\/\/science.nasa.gov\/mission\/hubble\/\" class=\"mobile:grid-col-12 tablet:grid-col-6 desktop:grid-col-3 topic-card margin-bottom-4 desktop:margin-bottom-0\" rel=\"noopener\"><\/p>\n<div class=\"hds-topic-card hds-cover-wrapper cover-hover-zoom bg-carbon-black\">\n<div class=\"skrim-overlay skrim-overlay-dark skrim-left mobile-skrim-top padding-3 display-flex flex-align-end flex-justify-start z-200\">\n<div>\n<h3 class=\"hds-topic-card-heading heading-29 color-spacesuit-white line-height-sm margin-top-0 margin-bottom-1\">\n\t\t\t\t\t\t\t\t<span>Hubble Space Telescope<\/span><br \/>\n\t\t\t\t\t\t\t\t<svg viewbox=\"0 0 32 32\" fill=\"none\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><circle class=\"color-nasa-red\" cx=\"16\" cy=\"16\" r=\"16\"><\/circle><path d=\"M8 16.956h12.604l-3.844 4.106 1.252 1.338L24 16l-5.988-6.4-1.252 1.338 3.844 4.106H8v1.912z\" class=\"color-spacesuit-white\"><\/path><\/svg><br \/>\n\t\t\t\t\t\t\t<\/h3>\n<p class=\"margin-bottom-0 margin-top-2 color-carbon-20-important\">Since its 1990 launch, the Hubble Space Telescope has changed our fundamental understanding of the universe.<\/p>\n<\/div>\n<\/div>\n<figure class=\"hds-media-background \"><img decoding=\"async\" width=\"1920\" height=\"1080\" src=\"https:\/\/assets.science.nasa.gov\/content\/dam\/science\/missions\/hubble\/videos\/hubble-banner-animation-nov-2025-compressed.gif?w=1920&h=1080&fit=clip&crop=faces%2Cfocalpoint\" class=\"attachment-1536x1536 size-1536x1536\" alt=\"\" block_context=\"nasa-block\" loading=\"lazy\"><\/figure>\n<\/div>\n<p><\/a><br \/>\n\t\t\t\t\t<a href=\"https:\/\/science.nasa.gov\/mission\/hubble\/science\/science-highlights\/\" class=\"mobile:grid-col-12 tablet:grid-col-6 desktop:grid-col-3 topic-card margin-bottom-4 desktop:margin-bottom-0\" rel=\"noopener\"><\/p>\n<div class=\"hds-topic-card hds-cover-wrapper cover-hover-zoom bg-carbon-black\">\n<div class=\"skrim-overlay skrim-overlay-dark skrim-left mobile-skrim-top padding-3 display-flex flex-align-end flex-justify-start z-200\">\n<div>\n<p class=\"hds-topic-card-heading heading-29 color-spacesuit-white line-height-sm margin-top-0 margin-bottom-1\">\n\t\t\t\t\t\t\t\t<span>Hubble Science Highlights<\/span><br \/>\n\t\t\t\t\t\t\t\t<svg viewbox=\"0 0 32 32\" fill=\"none\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><circle class=\"color-nasa-red\" cx=\"16\" cy=\"16\" r=\"16\"><\/circle><path d=\"M8 16.956h12.604l-3.844 4.106 1.252 1.338L24 16l-5.988-6.4-1.252 1.338 3.844 4.106H8v1.912z\" class=\"color-spacesuit-white\"><\/path><\/svg>\n\t\t\t\t\t\t\t<\/p>\n<\/div>\n<\/div>\n<figure class=\"hds-media-background \"><img decoding=\"async\" width=\"539\" height=\"565\" src=\"https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/astro\/universe\/internal_resources\/462\/Pillars_of_Creation-1.jpeg?w=539&h=565&fit=clip&crop=faces%2Cfocalpoint\" class=\"attachment-1536x1536 size-1536x1536\" alt=\"\" block_context=\"nasa-block\" loading=\"lazy\"><\/figure>\n<\/div>\n<p><\/a><br \/>\n\t\t\t\t\t<a href=\"https:\/\/science.nasa.gov\/mission\/hubble\/multimedia\/hubble-images\/\" class=\"mobile:grid-col-12 tablet:grid-col-6 desktop:grid-col-3 topic-card margin-bottom-4 desktop:margin-bottom-0\" rel=\"noopener\"><\/p>\n<div class=\"hds-topic-card hds-cover-wrapper cover-hover-zoom bg-carbon-black\">\n<div class=\"skrim-overlay skrim-overlay-dark skrim-left mobile-skrim-top padding-3 display-flex flex-align-end flex-justify-start z-200\">\n<div>\n<p class=\"hds-topic-card-heading heading-29 color-spacesuit-white line-height-sm margin-top-0 margin-bottom-1\">\n\t\t\t\t\t\t\t\t<span>Hubble Images<\/span><br \/>\n\t\t\t\t\t\t\t\t<svg viewbox=\"0 0 32 32\" fill=\"none\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><circle class=\"color-nasa-red\" cx=\"16\" cy=\"16\" r=\"16\"><\/circle><path d=\"M8 16.956h12.604l-3.844 4.106 1.252 1.338L24 16l-5.988-6.4-1.252 1.338 3.844 4.106H8v1.912z\" class=\"color-spacesuit-white\"><\/path><\/svg>\n\t\t\t\t\t\t\t<\/p>\n<\/div>\n<\/div>\n<figure class=\"hds-media-background \"><img decoding=\"async\" width=\"1120\" height=\"1120\" src=\"https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/releases\/2024\/07\/STScI-01J1X1RNTC893XMKJREG898ZXB.tif?w=1120&h=1120&fit=clip&crop=faces%2Cfocalpoint\" class=\"attachment-1536x1536 size-1536x1536\" alt=\"\" block_context=\"nasa-block\" loading=\"lazy\" srcset=\"https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/releases\/2024\/07\/STScI-01J1X1RNTC893XMKJREG898ZXB.tif?w=1120&h=1120&fit=crop&crop=faces%2Cfocalpoint 1120w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/releases\/2024\/07\/STScI-01J1X1RNTC893XMKJREG898ZXB.tif?w=150&h=150&fit=crop&crop=faces%2Cfocalpoint 150w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/releases\/2024\/07\/STScI-01J1X1RNTC893XMKJREG898ZXB.tif?w=300&h=300&fit=crop&crop=faces%2Cfocalpoint 300w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/releases\/2024\/07\/STScI-01J1X1RNTC893XMKJREG898ZXB.tif?w=768&h=768&fit=crop&crop=faces%2Cfocalpoint 768w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/releases\/2024\/07\/STScI-01J1X1RNTC893XMKJREG898ZXB.tif?w=1024&h=1024&fit=crop&crop=faces%2Cfocalpoint 1024w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/releases\/2024\/07\/STScI-01J1X1RNTC893XMKJREG898ZXB.tif?w=50&h=50&fit=crop&crop=faces%2Cfocalpoint 50w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/releases\/2024\/07\/STScI-01J1X1RNTC893XMKJREG898ZXB.tif?w=100&h=100&fit=crop&crop=faces%2Cfocalpoint 100w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/releases\/2024\/07\/STScI-01J1X1RNTC893XMKJREG898ZXB.tif?w=200&h=200&fit=crop&crop=faces%2Cfocalpoint 200w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/releases\/2024\/07\/STScI-01J1X1RNTC893XMKJREG898ZXB.tif?w=400&h=400&fit=crop&crop=faces%2Cfocalpoint 400w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/releases\/2024\/07\/STScI-01J1X1RNTC893XMKJREG898ZXB.tif?w=600&h=600&fit=crop&crop=faces%2Cfocalpoint 600w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/releases\/2024\/07\/STScI-01J1X1RNTC893XMKJREG898ZXB.tif?w=900&h=900&fit=crop&crop=faces%2Cfocalpoint 900w\" sizes=\"auto, (max-width: 1120px) 100vw, 1120px\"><\/figure>\n<\/div>\n<p><\/a><br \/>\n\t\t\t\t\t<a href=\"https:\/\/science.nasa.gov\/?post_type=mission&p=53188\" class=\"mobile:grid-col-12 tablet:grid-col-6 desktop:grid-col-3 topic-card margin-bottom-4 desktop:margin-bottom-0\" rel=\"noopener\"><\/p>\n<div class=\"hds-topic-card hds-cover-wrapper cover-hover-zoom bg-carbon-black\">\n<div class=\"skrim-overlay skrim-overlay-dark skrim-left mobile-skrim-top padding-3 display-flex flex-align-end flex-justify-start z-200\">\n<div>\n<p class=\"hds-topic-card-heading heading-29 color-spacesuit-white line-height-sm margin-top-0 margin-bottom-1\">\n\t\t\t\t\t\t\t\t<span>Hubble News<\/span><br \/>\n\t\t\t\t\t\t\t\t<svg viewbox=\"0 0 32 32\" fill=\"none\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><circle class=\"color-nasa-red\" cx=\"16\" cy=\"16\" r=\"16\"><\/circle><path d=\"M8 16.956h12.604l-3.844 4.106 1.252 1.338L24 16l-5.988-6.4-1.252 1.338 3.844 4.106H8v1.912z\" class=\"color-spacesuit-white\"><\/path><\/svg>\n\t\t\t\t\t\t\t<\/p>\n<\/div>\n<\/div>\n<figure class=\"hds-media-background \"><img decoding=\"async\" width=\"1651\" height=\"1651\" src=\"https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/releases\/2005\/02\/STScI-01EVT8D2PRXPF512PH8C8DCXXM.tif?w=1651&h=1651&fit=clip&crop=faces%2Cfocalpoint\" class=\"attachment-1536x1536 size-1536x1536\" alt=\"\" block_context=\"nasa-block\" loading=\"lazy\" srcset=\"https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/releases\/2005\/02\/STScI-01EVT8D2PRXPF512PH8C8DCXXM.tif?w=1651&h=1651&fit=crop&crop=faces%2Cfocalpoint 1651w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/releases\/2005\/02\/STScI-01EVT8D2PRXPF512PH8C8DCXXM.tif?w=150&h=150&fit=crop&crop=faces%2Cfocalpoint 150w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/releases\/2005\/02\/STScI-01EVT8D2PRXPF512PH8C8DCXXM.tif?w=300&h=300&fit=crop&crop=faces%2Cfocalpoint 300w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/releases\/2005\/02\/STScI-01EVT8D2PRXPF512PH8C8DCXXM.tif?w=768&h=768&fit=crop&crop=faces%2Cfocalpoint 768w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/releases\/2005\/02\/STScI-01EVT8D2PRXPF512PH8C8DCXXM.tif?w=1024&h=1024&fit=crop&crop=faces%2Cfocalpoint 1024w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/releases\/2005\/02\/STScI-01EVT8D2PRXPF512PH8C8DCXXM.tif?w=1536&h=1536&fit=crop&crop=faces%2Cfocalpoint 1536w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/releases\/2005\/02\/STScI-01EVT8D2PRXPF512PH8C8DCXXM.tif?w=50&h=50&fit=crop&crop=faces%2Cfocalpoint 50w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/releases\/2005\/02\/STScI-01EVT8D2PRXPF512PH8C8DCXXM.tif?w=100&h=100&fit=crop&crop=faces%2Cfocalpoint 100w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/releases\/2005\/02\/STScI-01EVT8D2PRXPF512PH8C8DCXXM.tif?w=200&h=200&fit=crop&crop=faces%2Cfocalpoint 200w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/releases\/2005\/02\/STScI-01EVT8D2PRXPF512PH8C8DCXXM.tif?w=400&h=400&fit=crop&crop=faces%2Cfocalpoint 400w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/releases\/2005\/02\/STScI-01EVT8D2PRXPF512PH8C8DCXXM.tif?w=600&h=600&fit=crop&crop=faces%2Cfocalpoint 600w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/releases\/2005\/02\/STScI-01EVT8D2PRXPF512PH8C8DCXXM.tif?w=900&h=900&fit=crop&crop=faces%2Cfocalpoint 900w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/releases\/2005\/02\/STScI-01EVT8D2PRXPF512PH8C8DCXXM.tif?w=1200&h=1200&fit=crop&crop=faces%2Cfocalpoint 1200w\" sizes=\"auto, (max-width: 1651px) 100vw, 1651px\"><\/figure>\n<\/div>\n<p><\/a>\n\t\t\t\t<\/div>\n<\/div>\n<\/div>\n<p class=\"wpematico_credit\"><small>Powered by <a href=\"http:\/\/www.wpematico.com\" target=\"_blank\">WPeMatico<\/a><\/small><\/p>\n<p><a href=\"https:\/\/science.nasa.gov\/missions\/hubble\/nasa-hubble-helps-detect-wake-of-betelgeuses-elusive-companion-star\/\" target=\"_blank\" rel=\"noopener\">Get The Details…<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Using new observations from NASA\u2019s Hubble Space Telescope and ground-based observatories, astronomers tracked the influence of a recently discovered companion star, Siwarha, on the gas around Betelgeuse. The research, from scientists at the Center for Astrophysics | Harvard & Smithsonian (CfA), reveals a trail of dense gas swirling through Betelgeuse\u2019s vast, extended atmosphere, shedding light [\u2026] <a class=\"continue-reading-link\" href=\"https:\/\/zobi.alcowep.com\/bourtagshdrevxnls658739\/nasa-hubble-helps-detect-wake-of-betelgeuses-elusive-companion-star\/\"> Continue reading <span class=\"meta-nav\">→ <\/span><\/a><\/p>\n<div class='heateorSssClear'><\/div><div class='heateor_sss_sharing_container heateor_sss_horizontal_sharing' data-heateor-sss-href='https:\/\/zobi.alcowep.com\/bourtagshdrevxnls658739\/nasa-hubble-helps-detect-wake-of-betelgeuses-elusive-companion-star\/'><div class='heateor_sss_sharing_title' style=\"font-weight:bold\" >Spread the love<\/div><div class=\"heateor_sss_sharing_ul\"><a aria-label=\"Facebook\" class=\"heateor_sss_facebook\" 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The team detected Siwarha\u2019s wake by carefully tracking changes in the star\u2019s light over nearly eight years. These changes show the effects of the previously unconfirmed companion as it plows through the outer atmosphere of Betelgeuse. This discovery resolves one of the biggest mysteries about the giant star, helping scientists to explain how it behaves and evolves while opening new doors to understanding other massive stars nearing the end of their lives.<\/p>\n
Located roughly 650 light-years away from Earth in the constellation Orion, Betelgeuse is a red supergiant star so large that more than 400 million Suns could fit inside. Because of its enormous size and proximity, Betelgeuse is one of the few stars whose surface and surrounding atmosphere can be directly observed by astronomers, making it an important and accessible laboratory for studying how giant stars age, lose mass, and eventually explode as supernovae.<\/p>\n
Using NASA\u2019s Hubble and ground-based telescopes at the Fred Lawrence Whipple Observatory and Roque de Los Muchachos Observatory, the team was able to see a pattern of changes in Betelgeuse, which provided clear evidence of a long-suspected companion star and its impact on the red supergiant\u2019s outer atmosphere. Those include changes in the star\u2019s spectrum, or the specific colors of light given off by different elements, and the speed and direction of gases in the outer atmosphere due to a trail of denser material, or wake. This trail appears just after the companion crosses in front of Betelgeuse every six years, or about 2,100 days, confirming theoretical models.<\/p>\n
\u201cIt\u2019s a bit like a boat moving through water. The companion star creates a ripple effect in Betelgeuse\u2019s atmosphere that we can actually see in the data,\u201d said Andrea Dupree, an astronomer at the CfA, and the lead study author. \u201cFor the first time, we\u2019re seeing direct signs of this wake, or trail of gas, confirming that Betelgeuse really does have a hidden companion shaping its appearance and behavior.\u201d<\/p>\n
For decades, astronomers have tracked changes in Betelgeuse\u2019s brightness and surface features in hopes of figuring out why the star behaves the way it does. Curiosity intensified after the giant star appeared to \u201csneeze\u201d<\/a> and became unexpectedly faint in 2020. Two distinct periods of variation in the star were especially puzzling for scientists: a short 400-day cycle, recently attributed to pulsations within the star itself, and the long, 2,100-day secondary period.<\/p>\n\n\n\n<\/a><\/figure>\nScientists used NASA\u2019s Hubble Space Telescope to look for evidence of a wake being generated by a companion star orbiting Betelgeuse. The team found a noticeable difference in light shown in the lefthand peak when the companion star was at different points in its orbit.<\/div>\nIllustration: NASA, ESA, Elizabeth Wheatley (STScI); Science: Andrea Dupree (CfA)<\/div>\n<\/figcaption><\/div>\n<\/div>\n<\/div>\nUntil now, scientists have considered everything from large convection cells and clouds of dust to magnetic activity, and the possibility of a hidden companion star. Recent studies concluded that the long secondary period was best explained by the presence of a low-mass companion orbiting deep within Betelgeuse\u2019s atmosphere, and another team of scientists reported a possible detection, but until now, astronomers lacked the evidence to prove what they believed was happening. Now, for the first time, they have firm evidence that a companion is disrupting the atmosphere of this supergiant star.<\/p>\n\u201cThe idea that Betelgeuse had an undetected companion has been gaining in popularity for the past several years, but without direct evidence, it was an unproven theory,\u201d said Dupree. \u201cWith this new direct evidence, Betelgeuse gives us a front-row seat to watch how a giant star changes over time. Finding the wake from its companion means we can now understand how stars like this evolve, shed material, and eventually explode as supernovae.\u201d<\/p>\nWith Betelgeuse now eclipsing its companion from our point of view, astronomers are planning new observations for its next emergence in 2027. This breakthrough may also help explain similar mysteries in other giant and supergiant stars.<\/p>\nThe Hubble Space Telescope has been operating for over three decades and continues to make ground-breaking discoveries that shape our fundamental understanding of the universe. Hubble is a project of international cooperation between NASA and ESA (European Space Agency). NASA\u2019s Goddard Space Flight Center in Greenbelt, Maryland, manages the telescope and mission operations. Lockheed Martin Space, based in Denver, also supports mission operations at Goddard. The Space Telescope Science Institute in Baltimore, which is operated by the Association of Universities for Research in Astronomy, conducts Hubble science operations for NASA.<\/em><\/p>\n\n\n\n\t\t\t\tFacebook logo<\/title><path d=\"M9 8h-3v4h3v12h5v-12h3.642l.358-4h-4v-1.667c0-.955.192-1.333 1.115-1.333h2.885v-5h-3.808c-3.596 0-5.192 1.583-5.192 4.615v3.385z\"><\/path><\/svg>\t\t\t<\/div>\n<div class=\"hds-social-media-items padding-left-2\">\n\t\t\t\t<a target=\"_blank\" class=\"margin-right-2\" href=\"https:\/\/facebook.com\/NASAHubble\" aria-label=\"Go to @NASAHubble on facebook\" rel=\"noopener\">@NASAHubble<\/a>\t\t\t<\/div>\n<\/div>\n<div class=\"display-flex flex-align-center padding-y-1\">\n<div class=\"circle-4 minw-4 display-flex flex-align-center flex-justify-center\">\n\t\t\t\t<svg width=\"1200\" height=\"1227\" viewbox=\"0 0 1200 1227\" fill=\"none\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M714.163 519.284L1160.89 0H1055.03L667.137 450.887L357.328 0H0L468.492 681.821L0 1226.37H105.866L515.491 750.218L842.672 1226.37H1200L714.137 519.284H714.163ZM569.165 687.828L521.697 619.934L144.011 79.6944H306.615L611.412 515.685L658.88 583.579L1055.08 1150.3H892.476L569.165 687.854V687.828Z\" fill=\"white\"><\/path><\/svg>\t\t\t<\/div>\n<div class=\"hds-social-media-items padding-left-2\">\n\t\t\t\t<a target=\"_blank\" class=\"margin-right-2\" href=\"https:\/\/x.com\/NASAHubble\" aria-label=\"Go to @NASAHubble on twitter\">@NASAHubble<\/a>\t\t\t<\/div>\n<\/div>\n<div class=\"display-flex flex-align-center padding-y-1\">\n<div class=\"circle-4 minw-4 display-flex flex-align-center flex-justify-center\">\n\t\t\t\t<svg version=\"1.1\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" xmlns:xlink=\"http:\/\/www.w3.org\/1999\/xlink\" x=\"0px\" y=\"0px\" width=\"169.063px\" height=\"169.063px\" viewbox=\"0 0 169.063 169.063\" xml:space=\"preserve\" aria-labelledby=\"instagramIconTitle\"><title>Instagram logo<\/title><g> <path d=\"M122.406,0H46.654C20.929,0,0,20.93,0,46.655v75.752c0,25.726,20.929,46.655,46.654,46.655h75.752 c25.727,0,46.656-20.93,46.656-46.655V46.655C169.063,20.93,148.133,0,122.406,0z M154.063,122.407 c0,17.455-14.201,31.655-31.656,31.655H46.654C29.2,154.063,15,139.862,15,122.407V46.655C15,29.201,29.2,15,46.654,15h75.752 c17.455,0,31.656,14.201,31.656,31.655V122.407z\"><\/path> <path d=\"M84.531,40.97c-24.021,0-43.563,19.542-43.563,43.563c0,24.02,19.542,43.561,43.563,43.561s43.563-19.541,43.563-43.561 C128.094,60.512,108.552,40.97,84.531,40.97z M84.531,113.093c-15.749,0-28.563-12.812-28.563-28.561 c0-15.75,12.813-28.563,28.563-28.563s28.563,12.813,28.563,28.563C113.094,100.281,100.28,113.093,84.531,113.093z\"><\/path> <path d=\"M129.921,28.251c-2.89,0-5.729,1.17-7.77,3.22c-2.051,2.04-3.23,4.88-3.23,7.78c0,2.891,1.18,5.73,3.23,7.78 c2.04,2.04,4.88,3.22,7.77,3.22c2.9,0,5.73-1.18,7.78-3.22c2.05-2.05,3.22-4.89,3.22-7.78c0-2.9-1.17-5.74-3.22-7.78 C135.661,29.421,132.821,28.251,129.921,28.251z\"><\/path><\/g><\/svg>\t\t\t<\/div>\n<div class=\"hds-social-media-items padding-left-2\">\n\t\t\t\t<a target=\"_blank\" class=\"margin-right-2\" href=\"https:\/\/instagram.com\/NASAHubble\" aria-label=\"Go to @NASAHubble on instagram\" rel=\"noopener\">@NASAHubble<\/a>\t\t\t<\/div>\n<\/div>\n<\/div>\n<div class=\"hds-featured-link-list bg-carbon-05 padding-x-2 tablet:padding-x-3 desktop:padding-x-4 padding-y-5 desktop:padding-y-6 hds-module hds-module-full alignfull wp-block-nasa-blocks-featured-link-list\">\n<div class=\"grid-container grid-container-block padding-0\">\n<div class=\"margin-bottom-4\">\n<h2 class=\"heading-22\">\n\t\t\t\tRelated Images & Videos\t\t\t<\/h2>\n<\/div>\n<div class=\"grid-row padding-y-2 border-top-1px border-color-carbon-30-important\">\n<div class=\"grid-row featured-link-list-row width-full flex-align-center\">\n<div class=\"grid-col-2 desktop:grid-col-1 tablet:padding-right-3 desktop:padding-right-5\">\n<div class=\"width-full\">\n<div class=\"hds-cover-wrapper width-full ratio-1x1 radius-pill overflow-hidden\">\n<figure class=\"hds-media-background \"><img decoding=\"async\" width=\"3840\" height=\"2160\" src=\"https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/releases\/2026\/01\/STScI-01KDQQ7JYKDRX3AYTJ2BHCAZ03.jpg?w=3840&h=2160&fit=clip&crop=faces%2Cfocalpoint\" class=\"attachment-thumbnail size-thumbnail\" alt=\"An illustration of the red supergiant star Betelgeuse, its companion star, and a dusty wake. The disk of a red-orange star is in the center. It is surrounded by a diffuse orange cloud representing its extended atmosphere. Below it about one stellar diameter away is a yellow dot representing a smaller companion star. From the companion, a dark red cloud wraps around in a counterclockwise direction. It begins very narrow and expands as it gets further from the companion, finally disappearing at the outer edge of the diffuse orange cloud around 10 ou2019clock. The words u201cartistu2019s conceptu201d are at lower right.\" block_context=\"nasa-block\" loading=\"lazy\" srcset=\"https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/releases\/2026\/01\/STScI-01KDQQ7JYKDRX3AYTJ2BHCAZ03.jpg?w=3840&h=2160&fit=crop&crop=faces%2Cfocalpoint 3840w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/releases\/2026\/01\/STScI-01KDQQ7JYKDRX3AYTJ2BHCAZ03.jpg?w=300&h=169&fit=crop&crop=faces%2Cfocalpoint 300w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/releases\/2026\/01\/STScI-01KDQQ7JYKDRX3AYTJ2BHCAZ03.jpg?w=768&h=432&fit=crop&crop=faces%2Cfocalpoint 768w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/releases\/2026\/01\/STScI-01KDQQ7JYKDRX3AYTJ2BHCAZ03.jpg?w=1024&h=576&fit=crop&crop=faces%2Cfocalpoint 1024w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/releases\/2026\/01\/STScI-01KDQQ7JYKDRX3AYTJ2BHCAZ03.jpg?w=1536&h=864&fit=crop&crop=faces%2Cfocalpoint 1536w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/releases\/2026\/01\/STScI-01KDQQ7JYKDRX3AYTJ2BHCAZ03.jpg?w=2048&h=1152&fit=crop&crop=faces%2Cfocalpoint 2048w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/releases\/2026\/01\/STScI-01KDQQ7JYKDRX3AYTJ2BHCAZ03.jpg?w=400&h=225&fit=crop&crop=faces%2Cfocalpoint 400w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/releases\/2026\/01\/STScI-01KDQQ7JYKDRX3AYTJ2BHCAZ03.jpg?w=600&h=338&fit=crop&crop=faces%2Cfocalpoint 600w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/releases\/2026\/01\/STScI-01KDQQ7JYKDRX3AYTJ2BHCAZ03.jpg?w=900&h=506&fit=crop&crop=faces%2Cfocalpoint 900w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/releases\/2026\/01\/STScI-01KDQQ7JYKDRX3AYTJ2BHCAZ03.jpg?w=1200&h=675&fit=crop&crop=faces%2Cfocalpoint 1200w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/releases\/2026\/01\/STScI-01KDQQ7JYKDRX3AYTJ2BHCAZ03.jpg?w=2000&h=1125&fit=crop&crop=faces%2Cfocalpoint 2000w\" sizes=\"auto, (max-width: 3840px) 100vw, 3840px\"><\/figure>\n<\/div>\n<\/div>\n<\/div>\n<div class=\"grid-col-8 desktop:grid-col-10 padding-left-3 desktop:padding-left-0\">\n<div class=\"grid-row flex-align-center\">\n<div class=\"grid-col-12 desktop:grid-col-6\">\n<h2 class=\"heading-36 margin-0\">Betelgeuse and Wake of its Companion Star (Artist\u2019s Concept)<\/h2>\n<\/div>\n<div class=\"grid-col-12 desktop:grid-col-6\">\n<p class=\"p-md margin-0 color-carbon-black-important\">This artist\u2019s concept shows the red supergiant star Betelgeuse and an orbiting companion star. The companion, which is orbiting clockwise from this point of view, generates a dusty wake that expands outward.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<div class=\"grid-col-2 desktop:grid-col-1 display-flex flex-justify-end\">\n\t\t\t\t\t\t<a href=\"https:\/\/science.nasa.gov\/asset\/hubble\/betelgeuse-and-wake-of-its-companion-star-artists-concept\/\" target=\"\" aria-label=\"Betelgeuse and Wake of its Companion Star (Artist's Concept)\" class=\"link-external-false\" rel=\"noopener\"><br \/>\n <svg class=\"hds-featured-link-list-button margin-left-auto margin-right-0\" viewbox=\"0 0 32 32\" fill=\"none\">\n <circle class=\"color-nasa-red\" cx=\"16\" cy=\"16\" r=\"16\"><\/circle><path d=\"M8 16.956h12.604l-3.844 4.106 1.252 1.338L24 16l-5.988-6.4-1.252 1.338 3.844 4.106H8v1.912z\" class=\"color-spacesuit-white\"><\/path>\n <\/svg><br \/>\n\t\t\t\t\t\t<\/a>\n\t\t\t\t\t<\/div>\n<\/div>\n<\/div>\n<div class=\"grid-row padding-y-2 border-top-1px border-color-carbon-30-important\">\n<div class=\"grid-row featured-link-list-row width-full flex-align-center\">\n<div class=\"grid-col-2 desktop:grid-col-1 tablet:padding-right-3 desktop:padding-right-5\">\n<div class=\"width-full\">\n<div class=\"hds-cover-wrapper width-full ratio-1x1 radius-pill overflow-hidden\">\n<figure class=\"hds-media-background \"><img decoding=\"async\" width=\"3840\" height=\"2255\" src=\"https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/releases\/2026\/01\/STScI-01KDNZZAJQ5ZAZJK3FM5Y0RCCN.jpg?w=3840&h=2255&fit=clip&crop=faces%2Cfocalpoint\" class=\"attachment-thumbnail size-thumbnail\" alt=\"A graphic titled u201cBetelgeuse: Effect of Companion Star Wakeu201d with a subtitle u201cSpectrum of Light Emitted by Iron (Fe II).u201d A graph plots brightness versus wavelength of light.\" block_context=\"nasa-block\" loading=\"lazy\" srcset=\"https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/releases\/2026\/01\/STScI-01KDNZZAJQ5ZAZJK3FM5Y0RCCN.jpg?w=3840&h=2255&fit=crop&crop=faces%2Cfocalpoint 3840w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/releases\/2026\/01\/STScI-01KDNZZAJQ5ZAZJK3FM5Y0RCCN.jpg?w=300&h=176&fit=crop&crop=faces%2Cfocalpoint 300w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/releases\/2026\/01\/STScI-01KDNZZAJQ5ZAZJK3FM5Y0RCCN.jpg?w=768&h=451&fit=crop&crop=faces%2Cfocalpoint 768w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/releases\/2026\/01\/STScI-01KDNZZAJQ5ZAZJK3FM5Y0RCCN.jpg?w=1024&h=601&fit=crop&crop=faces%2Cfocalpoint 1024w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/releases\/2026\/01\/STScI-01KDNZZAJQ5ZAZJK3FM5Y0RCCN.jpg?w=1536&h=902&fit=crop&crop=faces%2Cfocalpoint 1536w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/releases\/2026\/01\/STScI-01KDNZZAJQ5ZAZJK3FM5Y0RCCN.jpg?w=2048&h=1203&fit=crop&crop=faces%2Cfocalpoint 2048w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/releases\/2026\/01\/STScI-01KDNZZAJQ5ZAZJK3FM5Y0RCCN.jpg?w=400&h=235&fit=crop&crop=faces%2Cfocalpoint 400w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/releases\/2026\/01\/STScI-01KDNZZAJQ5ZAZJK3FM5Y0RCCN.jpg?w=600&h=352&fit=crop&crop=faces%2Cfocalpoint 600w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/releases\/2026\/01\/STScI-01KDNZZAJQ5ZAZJK3FM5Y0RCCN.jpg?w=900&h=529&fit=crop&crop=faces%2Cfocalpoint 900w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/releases\/2026\/01\/STScI-01KDNZZAJQ5ZAZJK3FM5Y0RCCN.jpg?w=1200&h=705&fit=crop&crop=faces%2Cfocalpoint 1200w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/releases\/2026\/01\/STScI-01KDNZZAJQ5ZAZJK3FM5Y0RCCN.jpg?w=2000&h=1174&fit=crop&crop=faces%2Cfocalpoint 2000w\" sizes=\"auto, (max-width: 3840px) 100vw, 3840px\"><\/figure>\n<\/div>\n<\/div>\n<\/div>\n<div class=\"grid-col-8 desktop:grid-col-10 padding-left-3 desktop:padding-left-0\">\n<div class=\"grid-row flex-align-center\">\n<div class=\"grid-col-12 desktop:grid-col-6\">\n<h2 class=\"heading-36 margin-0\">Betelgeuse: Effect of Companion Star Wake<\/h2>\n<\/div>\n<div class=\"grid-col-12 desktop:grid-col-6\">\n<p class=\"p-md margin-0 color-carbon-black-important\">Scientists used NASA\u2019s Hubble Space Telescope to look for evidence of a wake being generated by a companion star orbiting Betelgeuse. The team found a noticeable difference in light shown in the lefthand peak when the companion star was at different points in its orbit.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<div class=\"grid-col-2 desktop:grid-col-1 display-flex flex-justify-end\">\n\t\t\t\t\t\t<a href=\"https:\/\/science.nasa.gov\/asset\/hubble\/betelgeuse-effect-of-companion-star-wake\/\" target=\"\" aria-label=\"Betelgeuse: Effect of Companion Star Wake\" class=\"link-external-false\" rel=\"noopener\"><br \/>\n <svg class=\"hds-featured-link-list-button margin-left-auto margin-right-0\" viewbox=\"0 0 32 32\" fill=\"none\">\n <circle class=\"color-nasa-red\" cx=\"16\" cy=\"16\" r=\"16\"><\/circle><path d=\"M8 16.956h12.604l-3.844 4.106 1.252 1.338L24 16l-5.988-6.4-1.252 1.338 3.844 4.106H8v1.912z\" class=\"color-spacesuit-white\"><\/path>\n <\/svg><br \/>\n\t\t\t\t\t\t<\/a>\n\t\t\t\t\t<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<p>\n<\/p>\n<div class=\"nasa-gb-align-full width-full maxw-full padding-x-3 padding-y-0 nasa_template_article_b hds-module hds-module-full alignfull wp-block-nasa-blocks-credits-and-details\">\n<section class=\"padding-x-0 padding-top-5 padding-bottom-2 desktop:padding-top-7 desktop:padding-bottom-9\">\n<div class=\"grid-row grid-container maxw-widescreen padding-0\">\n<div class=\"grid-col-12 desktop:grid-col-2 padding-right-4 margin-bottom-5 desktop:margin-bottom-0\">\n<div class=\"padding-top-3 border-top-1px border-color-carbon-black\">\n<div class=\"margin-bottom-2\">\n<h2 class=\"heading-14\">Share<\/h2>\n<\/div>\n<div class=\"padding-bottom-2\">\n<ul class=\"social-icons social-icons-round\">\n<li class=\"social-icon social-icon-x\">\n\t\t\t\t\t\t\t<a href=\"https:\/\/x.com\/intent\/tweet?via=NASA&text=NASA%20Hubble%20Helps%20Detect%20%26%238216%3BWake%26%238217%3B%20of%20Betelgeuse%E2%80%99s%20Elusive%20Companion%20Star&url=https%3A%2F%2Fscience.nasa.gov%2Fmissions%2Fhubble%2Fnasa-hubble-helps-detect-wake-of-betelgeuses-elusive-companion-star%2F\" 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class=\"subheading\">Editor<\/div>\n<\/div>\n<div class=\"grid-col-8\">Andrea Gianopoulos<\/div>\n<\/div>\n<div class=\"grid-row\">\n<div class=\"grid-col-4\">\n<div class=\"subheading\">Location<\/div>\n<\/div>\n<div class=\"grid-col-8\"><a class=\"hds-location-tag-name\" href=\"https:\/\/nasa.gov\/goddard\" rel=\"noopener\"><span class=\"hds-meta-heading\">NASA Goddard Space Flight Center<\/span><\/a><\/div>\n<\/div>\n<div class=\"grid-row margin-y-3\">\n<div class=\"grid-col-4\">\n<div class=\"subheading\">Contact<\/div>\n<\/div>\n<div class=\"grid-col-8\">\n<div class=\"margin-bottom-3\">\n<div class=\"heading-16 padding-bottom-1 border-bottom margin-bottom-2\">Media<\/div>\n<div class=\"cnd-extra-left-wysiwyg\">\n<p><strong>Claire Andreoli<\/strong><br \/>\nNASA\u2019s Goddard Space Flight Center<br \/>\nGreenbelt, Maryland<br \/>\n<a href=\"mailto:claire.andreoli@nasa.gov\">claire.andreoli@nasa.gov<\/a><\/p>\n<p><strong>Amy Oliver<\/strong><br \/>\nCenter for Astrophysics | Harvard & Smithsonian<br \/>\nCambridge, Massachusetts<\/p>\n<p><strong>Christine Pulliam<\/strong><br \/>\nSpace Telescope Science Institute<br \/>\nBaltimore, Maryland<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<div class=\"grid-col-12 desktop:grid-col-5 padding-right-4 margin-bottom-5 desktop:margin-bottom-0\">\n<div class=\"padding-top-3 border-top-1px border-color-carbon-black \">\n<div class=\"margin-bottom-2\">\n<h2 class=\"heading-14\">Related Terms<\/h2>\n<\/div>\n<ul class=\"article-tags\">\n<li class=\"article-tag\"><a href=\"https:\/\/science.nasa.gov\/mission\/hubble\" rel=\"noopener\">Hubble Space Telescope<\/a><\/li>\n<li class=\"article-tag\"><a href=\"https:\/\/science.nasa.gov\/astrophysics\/\" rel=\"noopener\">Astrophysics<\/a><\/li>\n<li class=\"article-tag\"><a href=\"https:\/\/science.nasa.gov\/astrophysics\/\" rel=\"noopener\">Astrophysics Division<\/a><\/li>\n<li class=\"article-tag\"><a href=\"https:\/\/science.nasa.gov\/category\/universe\/stars\/binary-stars\/\" rel=\"noopener\">Binary Stars<\/a><\/li>\n<li class=\"article-tag\"><a href=\"https:\/\/www.nasa.gov\/goddard\/\" rel=\"noopener\">Goddard Space Flight Center<\/a><\/li>\n<li class=\"article-tag\"><a href=\"https:\/\/science.nasa.gov\/universe\/stars\/\" rel=\"noopener\">Stars<\/a><\/li>\n<li class=\"article-tag\"><a href=\"https:\/\/science.nasa.gov\/universe\/\" rel=\"noopener\">The Universe<\/a><\/li>\n<\/ul>\n<\/div>\n<\/div>\n<\/div>\n<\/section>\n<\/div>\n<div class=\"hds-topic-cards nasa-gb-align-full maxw-full width-full padding-y-6 padding-x-3 color-mode-dark hds-module hds-module-full alignfull wp-block-nasa-blocks-topic-cards\">\n<div class=\"grid-container grid-container-block-lg padding-x-0\">\n<div class=\"grid-row flex-align-center margin-bottom-3\">\n<div class=\"desktop:grid-col-8 margin-bottom-2 desktop:margin-bottom-0\">\n<div class=\"label color-carbon-60 margin-bottom-2\">Keep Exploring<\/div>\n<h2 class=\"heading-36 line-height-sm\">Discover More Topics From Hubble<\/h2>\n<\/div>\n<\/div>\n<div class=\"grid-row grid-gap-2 hds-topic-cards-wrapper\">\n\t\t\t\t\t<a href=\"https:\/\/science.nasa.gov\/mission\/hubble\/\" class=\"mobile:grid-col-12 tablet:grid-col-6 desktop:grid-col-3 topic-card margin-bottom-4 desktop:margin-bottom-0\" rel=\"noopener\"><\/p>\n<div class=\"hds-topic-card hds-cover-wrapper cover-hover-zoom bg-carbon-black\">\n<div class=\"skrim-overlay skrim-overlay-dark skrim-left mobile-skrim-top padding-3 display-flex flex-align-end flex-justify-start z-200\">\n<div>\n<h3 class=\"hds-topic-card-heading heading-29 color-spacesuit-white line-height-sm margin-top-0 margin-bottom-1\">\n\t\t\t\t\t\t\t\t<span>Hubble Space Telescope<\/span><br \/>\n\t\t\t\t\t\t\t\t<svg viewbox=\"0 0 32 32\" fill=\"none\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><circle class=\"color-nasa-red\" cx=\"16\" cy=\"16\" r=\"16\"><\/circle><path d=\"M8 16.956h12.604l-3.844 4.106 1.252 1.338L24 16l-5.988-6.4-1.252 1.338 3.844 4.106H8v1.912z\" class=\"color-spacesuit-white\"><\/path><\/svg><br \/>\n\t\t\t\t\t\t\t<\/h3>\n<p class=\"margin-bottom-0 margin-top-2 color-carbon-20-important\">Since its 1990 launch, the Hubble Space Telescope has changed our fundamental understanding of the universe.<\/p>\n<\/div>\n<\/div>\n<figure class=\"hds-media-background \"><img decoding=\"async\" width=\"1920\" height=\"1080\" src=\"https:\/\/assets.science.nasa.gov\/content\/dam\/science\/missions\/hubble\/videos\/hubble-banner-animation-nov-2025-compressed.gif?w=1920&h=1080&fit=clip&crop=faces%2Cfocalpoint\" class=\"attachment-1536x1536 size-1536x1536\" alt=\"\" block_context=\"nasa-block\" loading=\"lazy\"><\/figure>\n<\/div>\n<p><\/a><br \/>\n\t\t\t\t\t<a href=\"https:\/\/science.nasa.gov\/mission\/hubble\/science\/science-highlights\/\" class=\"mobile:grid-col-12 tablet:grid-col-6 desktop:grid-col-3 topic-card margin-bottom-4 desktop:margin-bottom-0\" rel=\"noopener\"><\/p>\n<div class=\"hds-topic-card hds-cover-wrapper cover-hover-zoom bg-carbon-black\">\n<div class=\"skrim-overlay skrim-overlay-dark skrim-left mobile-skrim-top padding-3 display-flex flex-align-end flex-justify-start z-200\">\n<div>\n<p class=\"hds-topic-card-heading heading-29 color-spacesuit-white line-height-sm margin-top-0 margin-bottom-1\">\n\t\t\t\t\t\t\t\t<span>Hubble Science Highlights<\/span><br \/>\n\t\t\t\t\t\t\t\t<svg viewbox=\"0 0 32 32\" fill=\"none\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><circle class=\"color-nasa-red\" cx=\"16\" cy=\"16\" r=\"16\"><\/circle><path d=\"M8 16.956h12.604l-3.844 4.106 1.252 1.338L24 16l-5.988-6.4-1.252 1.338 3.844 4.106H8v1.912z\" class=\"color-spacesuit-white\"><\/path><\/svg>\n\t\t\t\t\t\t\t<\/p>\n<\/div>\n<\/div>\n<figure class=\"hds-media-background \"><img decoding=\"async\" width=\"539\" height=\"565\" src=\"https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/astro\/universe\/internal_resources\/462\/Pillars_of_Creation-1.jpeg?w=539&h=565&fit=clip&crop=faces%2Cfocalpoint\" class=\"attachment-1536x1536 size-1536x1536\" alt=\"\" block_context=\"nasa-block\" loading=\"lazy\"><\/figure>\n<\/div>\n<p><\/a><br \/>\n\t\t\t\t\t<a href=\"https:\/\/science.nasa.gov\/mission\/hubble\/multimedia\/hubble-images\/\" class=\"mobile:grid-col-12 tablet:grid-col-6 desktop:grid-col-3 topic-card margin-bottom-4 desktop:margin-bottom-0\" rel=\"noopener\"><\/p>\n<div class=\"hds-topic-card hds-cover-wrapper cover-hover-zoom bg-carbon-black\">\n<div class=\"skrim-overlay skrim-overlay-dark skrim-left mobile-skrim-top padding-3 display-flex flex-align-end flex-justify-start z-200\">\n<div>\n<p class=\"hds-topic-card-heading heading-29 color-spacesuit-white line-height-sm margin-top-0 margin-bottom-1\">\n\t\t\t\t\t\t\t\t<span>Hubble Images<\/span><br \/>\n\t\t\t\t\t\t\t\t<svg viewbox=\"0 0 32 32\" fill=\"none\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><circle class=\"color-nasa-red\" cx=\"16\" cy=\"16\" r=\"16\"><\/circle><path d=\"M8 16.956h12.604l-3.844 4.106 1.252 1.338L24 16l-5.988-6.4-1.252 1.338 3.844 4.106H8v1.912z\" class=\"color-spacesuit-white\"><\/path><\/svg>\n\t\t\t\t\t\t\t<\/p>\n<\/div>\n<\/div>\n<figure class=\"hds-media-background \"><img decoding=\"async\" width=\"1120\" height=\"1120\" src=\"https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/releases\/2024\/07\/STScI-01J1X1RNTC893XMKJREG898ZXB.tif?w=1120&h=1120&fit=clip&crop=faces%2Cfocalpoint\" class=\"attachment-1536x1536 size-1536x1536\" alt=\"\" block_context=\"nasa-block\" loading=\"lazy\" srcset=\"https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/releases\/2024\/07\/STScI-01J1X1RNTC893XMKJREG898ZXB.tif?w=1120&h=1120&fit=crop&crop=faces%2Cfocalpoint 1120w, 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https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/releases\/2024\/07\/STScI-01J1X1RNTC893XMKJREG898ZXB.tif?w=100&h=100&fit=crop&crop=faces%2Cfocalpoint 100w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/releases\/2024\/07\/STScI-01J1X1RNTC893XMKJREG898ZXB.tif?w=200&h=200&fit=crop&crop=faces%2Cfocalpoint 200w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/releases\/2024\/07\/STScI-01J1X1RNTC893XMKJREG898ZXB.tif?w=400&h=400&fit=crop&crop=faces%2Cfocalpoint 400w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/releases\/2024\/07\/STScI-01J1X1RNTC893XMKJREG898ZXB.tif?w=600&h=600&fit=crop&crop=faces%2Cfocalpoint 600w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/releases\/2024\/07\/STScI-01J1X1RNTC893XMKJREG898ZXB.tif?w=900&h=900&fit=crop&crop=faces%2Cfocalpoint 900w\" sizes=\"auto, (max-width: 1120px) 100vw, 1120px\"><\/figure>\n<\/div>\n<p><\/a><br \/>\n\t\t\t\t\t<a href=\"https:\/\/science.nasa.gov\/?post_type=mission&p=53188\" class=\"mobile:grid-col-12 tablet:grid-col-6 desktop:grid-col-3 topic-card margin-bottom-4 desktop:margin-bottom-0\" rel=\"noopener\"><\/p>\n<div class=\"hds-topic-card hds-cover-wrapper cover-hover-zoom bg-carbon-black\">\n<div class=\"skrim-overlay skrim-overlay-dark skrim-left mobile-skrim-top padding-3 display-flex flex-align-end flex-justify-start z-200\">\n<div>\n<p class=\"hds-topic-card-heading heading-29 color-spacesuit-white line-height-sm margin-top-0 margin-bottom-1\">\n\t\t\t\t\t\t\t\t<span>Hubble News<\/span><br \/>\n\t\t\t\t\t\t\t\t<svg viewbox=\"0 0 32 32\" fill=\"none\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><circle class=\"color-nasa-red\" cx=\"16\" cy=\"16\" r=\"16\"><\/circle><path d=\"M8 16.956h12.604l-3.844 4.106 1.252 1.338L24 16l-5.988-6.4-1.252 1.338 3.844 4.106H8v1.912z\" 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https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/releases\/2005\/02\/STScI-01EVT8D2PRXPF512PH8C8DCXXM.tif?w=100&h=100&fit=crop&crop=faces%2Cfocalpoint 100w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/releases\/2005\/02\/STScI-01EVT8D2PRXPF512PH8C8DCXXM.tif?w=200&h=200&fit=crop&crop=faces%2Cfocalpoint 200w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/releases\/2005\/02\/STScI-01EVT8D2PRXPF512PH8C8DCXXM.tif?w=400&h=400&fit=crop&crop=faces%2Cfocalpoint 400w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/releases\/2005\/02\/STScI-01EVT8D2PRXPF512PH8C8DCXXM.tif?w=600&h=600&fit=crop&crop=faces%2Cfocalpoint 600w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/releases\/2005\/02\/STScI-01EVT8D2PRXPF512PH8C8DCXXM.tif?w=900&h=900&fit=crop&crop=faces%2Cfocalpoint 900w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/releases\/2005\/02\/STScI-01EVT8D2PRXPF512PH8C8DCXXM.tif?w=1200&h=1200&fit=crop&crop=faces%2Cfocalpoint 1200w\" sizes=\"auto, (max-width: 1651px) 100vw, 1651px\"><\/figure>\n<\/div>\n<p><\/a>\n\t\t\t\t<\/div>\n<\/div>\n<\/div>\n<p class=\"wpematico_credit\"><small>Powered by <a href=\"http:\/\/www.wpematico.com\" target=\"_blank\">WPeMatico<\/a><\/small><\/p>\n<p><a href=\"https:\/\/science.nasa.gov\/missions\/hubble\/nasa-hubble-helps-detect-wake-of-betelgeuses-elusive-companion-star\/\" target=\"_blank\" rel=\"noopener\">Get The Details…<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Using new observations from NASA\u2019s Hubble Space Telescope and ground-based observatories, astronomers tracked the influence of a recently discovered companion star, Siwarha, on the gas around Betelgeuse. 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Until now, scientists have considered everything from large convection cells and clouds of dust to magnetic activity, and the possibility of a hidden companion star. Recent studies concluded that the long secondary period was best explained by the presence of a low-mass companion orbiting deep within Betelgeuse\u2019s atmosphere, and another team of scientists reported a possible detection, but until now, astronomers lacked the evidence to prove what they believed was happening. Now, for the first time, they have firm evidence that a companion is disrupting the atmosphere of this supergiant star.<\/p>\n
\u201cThe idea that Betelgeuse had an undetected companion has been gaining in popularity for the past several years, but without direct evidence, it was an unproven theory,\u201d said Dupree. \u201cWith this new direct evidence, Betelgeuse gives us a front-row seat to watch how a giant star changes over time. Finding the wake from its companion means we can now understand how stars like this evolve, shed material, and eventually explode as supernovae.\u201d<\/p>\n
With Betelgeuse now eclipsing its companion from our point of view, astronomers are planning new observations for its next emergence in 2027. This breakthrough may also help explain similar mysteries in other giant and supergiant stars.<\/p>\n
The Hubble Space Telescope has been operating for over three decades and continues to make ground-breaking discoveries that shape our fundamental understanding of the universe. Hubble is a project of international cooperation between NASA and ESA (European Space Agency). NASA\u2019s Goddard Space Flight Center in Greenbelt, Maryland, manages the telescope and mission operations. Lockheed Martin Space, based in Denver, also supports mission operations at Goddard. The Space Telescope Science Institute in Baltimore, which is operated by the Association of Universities for Research in Astronomy, conducts Hubble science operations for NASA.<\/em><\/p>\n\n\n\n\t\t\t\tFacebook logo<\/title><path d=\"M9 8h-3v4h3v12h5v-12h3.642l.358-4h-4v-1.667c0-.955.192-1.333 1.115-1.333h2.885v-5h-3.808c-3.596 0-5.192 1.583-5.192 4.615v3.385z\"><\/path><\/svg>\t\t\t<\/div>\n<div class=\"hds-social-media-items padding-left-2\">\n\t\t\t\t<a target=\"_blank\" class=\"margin-right-2\" href=\"https:\/\/facebook.com\/NASAHubble\" aria-label=\"Go to @NASAHubble on facebook\" rel=\"noopener\">@NASAHubble<\/a>\t\t\t<\/div>\n<\/div>\n<div class=\"display-flex flex-align-center padding-y-1\">\n<div class=\"circle-4 minw-4 display-flex flex-align-center flex-justify-center\">\n\t\t\t\t<svg width=\"1200\" height=\"1227\" viewbox=\"0 0 1200 1227\" fill=\"none\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M714.163 519.284L1160.89 0H1055.03L667.137 450.887L357.328 0H0L468.492 681.821L0 1226.37H105.866L515.491 750.218L842.672 1226.37H1200L714.137 519.284H714.163ZM569.165 687.828L521.697 619.934L144.011 79.6944H306.615L611.412 515.685L658.88 583.579L1055.08 1150.3H892.476L569.165 687.854V687.828Z\" fill=\"white\"><\/path><\/svg>\t\t\t<\/div>\n<div class=\"hds-social-media-items padding-left-2\">\n\t\t\t\t<a target=\"_blank\" class=\"margin-right-2\" href=\"https:\/\/x.com\/NASAHubble\" aria-label=\"Go to @NASAHubble on twitter\">@NASAHubble<\/a>\t\t\t<\/div>\n<\/div>\n<div class=\"display-flex flex-align-center padding-y-1\">\n<div class=\"circle-4 minw-4 display-flex flex-align-center flex-justify-center\">\n\t\t\t\t<svg version=\"1.1\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" xmlns:xlink=\"http:\/\/www.w3.org\/1999\/xlink\" x=\"0px\" y=\"0px\" width=\"169.063px\" height=\"169.063px\" viewbox=\"0 0 169.063 169.063\" xml:space=\"preserve\" aria-labelledby=\"instagramIconTitle\"><title>Instagram logo<\/title><g> <path d=\"M122.406,0H46.654C20.929,0,0,20.93,0,46.655v75.752c0,25.726,20.929,46.655,46.654,46.655h75.752 c25.727,0,46.656-20.93,46.656-46.655V46.655C169.063,20.93,148.133,0,122.406,0z M154.063,122.407 c0,17.455-14.201,31.655-31.656,31.655H46.654C29.2,154.063,15,139.862,15,122.407V46.655C15,29.201,29.2,15,46.654,15h75.752 c17.455,0,31.656,14.201,31.656,31.655V122.407z\"><\/path> <path d=\"M84.531,40.97c-24.021,0-43.563,19.542-43.563,43.563c0,24.02,19.542,43.561,43.563,43.561s43.563-19.541,43.563-43.561 C128.094,60.512,108.552,40.97,84.531,40.97z M84.531,113.093c-15.749,0-28.563-12.812-28.563-28.561 c0-15.75,12.813-28.563,28.563-28.563s28.563,12.813,28.563,28.563C113.094,100.281,100.28,113.093,84.531,113.093z\"><\/path> <path d=\"M129.921,28.251c-2.89,0-5.729,1.17-7.77,3.22c-2.051,2.04-3.23,4.88-3.23,7.78c0,2.891,1.18,5.73,3.23,7.78 c2.04,2.04,4.88,3.22,7.77,3.22c2.9,0,5.73-1.18,7.78-3.22c2.05-2.05,3.22-4.89,3.22-7.78c0-2.9-1.17-5.74-3.22-7.78 C135.661,29.421,132.821,28.251,129.921,28.251z\"><\/path><\/g><\/svg>\t\t\t<\/div>\n<div class=\"hds-social-media-items padding-left-2\">\n\t\t\t\t<a target=\"_blank\" class=\"margin-right-2\" href=\"https:\/\/instagram.com\/NASAHubble\" aria-label=\"Go to @NASAHubble on instagram\" rel=\"noopener\">@NASAHubble<\/a>\t\t\t<\/div>\n<\/div>\n<\/div>\n<div class=\"hds-featured-link-list bg-carbon-05 padding-x-2 tablet:padding-x-3 desktop:padding-x-4 padding-y-5 desktop:padding-y-6 hds-module hds-module-full alignfull wp-block-nasa-blocks-featured-link-list\">\n<div class=\"grid-container grid-container-block padding-0\">\n<div class=\"margin-bottom-4\">\n<h2 class=\"heading-22\">\n\t\t\t\tRelated Images & Videos\t\t\t<\/h2>\n<\/div>\n<div class=\"grid-row padding-y-2 border-top-1px border-color-carbon-30-important\">\n<div class=\"grid-row featured-link-list-row width-full flex-align-center\">\n<div class=\"grid-col-2 desktop:grid-col-1 tablet:padding-right-3 desktop:padding-right-5\">\n<div class=\"width-full\">\n<div class=\"hds-cover-wrapper width-full ratio-1x1 radius-pill overflow-hidden\">\n<figure class=\"hds-media-background \"><img decoding=\"async\" width=\"3840\" height=\"2160\" src=\"https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/releases\/2026\/01\/STScI-01KDQQ7JYKDRX3AYTJ2BHCAZ03.jpg?w=3840&h=2160&fit=clip&crop=faces%2Cfocalpoint\" class=\"attachment-thumbnail size-thumbnail\" alt=\"An illustration of the red supergiant star Betelgeuse, its companion star, and a dusty wake. The disk of a red-orange star is in the center. It is surrounded by a diffuse orange cloud representing its extended atmosphere. Below it about one stellar diameter away is a yellow dot representing a smaller companion star. From the companion, a dark red cloud wraps around in a counterclockwise direction. It begins very narrow and expands as it gets further from the companion, finally disappearing at the outer edge of the diffuse orange cloud around 10 ou2019clock. The words u201cartistu2019s conceptu201d are at lower right.\" block_context=\"nasa-block\" loading=\"lazy\" srcset=\"https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/releases\/2026\/01\/STScI-01KDQQ7JYKDRX3AYTJ2BHCAZ03.jpg?w=3840&h=2160&fit=crop&crop=faces%2Cfocalpoint 3840w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/releases\/2026\/01\/STScI-01KDQQ7JYKDRX3AYTJ2BHCAZ03.jpg?w=300&h=169&fit=crop&crop=faces%2Cfocalpoint 300w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/releases\/2026\/01\/STScI-01KDQQ7JYKDRX3AYTJ2BHCAZ03.jpg?w=768&h=432&fit=crop&crop=faces%2Cfocalpoint 768w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/releases\/2026\/01\/STScI-01KDQQ7JYKDRX3AYTJ2BHCAZ03.jpg?w=1024&h=576&fit=crop&crop=faces%2Cfocalpoint 1024w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/releases\/2026\/01\/STScI-01KDQQ7JYKDRX3AYTJ2BHCAZ03.jpg?w=1536&h=864&fit=crop&crop=faces%2Cfocalpoint 1536w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/releases\/2026\/01\/STScI-01KDQQ7JYKDRX3AYTJ2BHCAZ03.jpg?w=2048&h=1152&fit=crop&crop=faces%2Cfocalpoint 2048w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/releases\/2026\/01\/STScI-01KDQQ7JYKDRX3AYTJ2BHCAZ03.jpg?w=400&h=225&fit=crop&crop=faces%2Cfocalpoint 400w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/releases\/2026\/01\/STScI-01KDQQ7JYKDRX3AYTJ2BHCAZ03.jpg?w=600&h=338&fit=crop&crop=faces%2Cfocalpoint 600w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/releases\/2026\/01\/STScI-01KDQQ7JYKDRX3AYTJ2BHCAZ03.jpg?w=900&h=506&fit=crop&crop=faces%2Cfocalpoint 900w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/releases\/2026\/01\/STScI-01KDQQ7JYKDRX3AYTJ2BHCAZ03.jpg?w=1200&h=675&fit=crop&crop=faces%2Cfocalpoint 1200w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/releases\/2026\/01\/STScI-01KDQQ7JYKDRX3AYTJ2BHCAZ03.jpg?w=2000&h=1125&fit=crop&crop=faces%2Cfocalpoint 2000w\" sizes=\"auto, (max-width: 3840px) 100vw, 3840px\"><\/figure>\n<\/div>\n<\/div>\n<\/div>\n<div class=\"grid-col-8 desktop:grid-col-10 padding-left-3 desktop:padding-left-0\">\n<div class=\"grid-row flex-align-center\">\n<div class=\"grid-col-12 desktop:grid-col-6\">\n<h2 class=\"heading-36 margin-0\">Betelgeuse and Wake of its Companion Star (Artist\u2019s Concept)<\/h2>\n<\/div>\n<div class=\"grid-col-12 desktop:grid-col-6\">\n<p class=\"p-md margin-0 color-carbon-black-important\">This artist\u2019s concept shows the red supergiant star Betelgeuse and an orbiting companion star. The companion, which is orbiting clockwise from this point of view, generates a dusty wake that expands outward.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<div class=\"grid-col-2 desktop:grid-col-1 display-flex flex-justify-end\">\n\t\t\t\t\t\t<a href=\"https:\/\/science.nasa.gov\/asset\/hubble\/betelgeuse-and-wake-of-its-companion-star-artists-concept\/\" target=\"\" aria-label=\"Betelgeuse and Wake of its Companion Star (Artist's Concept)\" class=\"link-external-false\" rel=\"noopener\"><br \/>\n <svg class=\"hds-featured-link-list-button margin-left-auto margin-right-0\" viewbox=\"0 0 32 32\" fill=\"none\">\n <circle class=\"color-nasa-red\" cx=\"16\" cy=\"16\" r=\"16\"><\/circle><path d=\"M8 16.956h12.604l-3.844 4.106 1.252 1.338L24 16l-5.988-6.4-1.252 1.338 3.844 4.106H8v1.912z\" class=\"color-spacesuit-white\"><\/path>\n <\/svg><br \/>\n\t\t\t\t\t\t<\/a>\n\t\t\t\t\t<\/div>\n<\/div>\n<\/div>\n<div class=\"grid-row padding-y-2 border-top-1px border-color-carbon-30-important\">\n<div class=\"grid-row featured-link-list-row width-full flex-align-center\">\n<div class=\"grid-col-2 desktop:grid-col-1 tablet:padding-right-3 desktop:padding-right-5\">\n<div class=\"width-full\">\n<div class=\"hds-cover-wrapper width-full ratio-1x1 radius-pill overflow-hidden\">\n<figure class=\"hds-media-background \"><img decoding=\"async\" width=\"3840\" height=\"2255\" src=\"https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/releases\/2026\/01\/STScI-01KDNZZAJQ5ZAZJK3FM5Y0RCCN.jpg?w=3840&h=2255&fit=clip&crop=faces%2Cfocalpoint\" class=\"attachment-thumbnail size-thumbnail\" alt=\"A graphic titled u201cBetelgeuse: Effect of Companion Star Wakeu201d with a subtitle u201cSpectrum of Light Emitted by Iron (Fe II).u201d A graph plots brightness versus wavelength of light.\" block_context=\"nasa-block\" loading=\"lazy\" srcset=\"https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/releases\/2026\/01\/STScI-01KDNZZAJQ5ZAZJK3FM5Y0RCCN.jpg?w=3840&h=2255&fit=crop&crop=faces%2Cfocalpoint 3840w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/releases\/2026\/01\/STScI-01KDNZZAJQ5ZAZJK3FM5Y0RCCN.jpg?w=300&h=176&fit=crop&crop=faces%2Cfocalpoint 300w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/releases\/2026\/01\/STScI-01KDNZZAJQ5ZAZJK3FM5Y0RCCN.jpg?w=768&h=451&fit=crop&crop=faces%2Cfocalpoint 768w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/releases\/2026\/01\/STScI-01KDNZZAJQ5ZAZJK3FM5Y0RCCN.jpg?w=1024&h=601&fit=crop&crop=faces%2Cfocalpoint 1024w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/releases\/2026\/01\/STScI-01KDNZZAJQ5ZAZJK3FM5Y0RCCN.jpg?w=1536&h=902&fit=crop&crop=faces%2Cfocalpoint 1536w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/releases\/2026\/01\/STScI-01KDNZZAJQ5ZAZJK3FM5Y0RCCN.jpg?w=2048&h=1203&fit=crop&crop=faces%2Cfocalpoint 2048w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/releases\/2026\/01\/STScI-01KDNZZAJQ5ZAZJK3FM5Y0RCCN.jpg?w=400&h=235&fit=crop&crop=faces%2Cfocalpoint 400w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/releases\/2026\/01\/STScI-01KDNZZAJQ5ZAZJK3FM5Y0RCCN.jpg?w=600&h=352&fit=crop&crop=faces%2Cfocalpoint 600w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/releases\/2026\/01\/STScI-01KDNZZAJQ5ZAZJK3FM5Y0RCCN.jpg?w=900&h=529&fit=crop&crop=faces%2Cfocalpoint 900w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/releases\/2026\/01\/STScI-01KDNZZAJQ5ZAZJK3FM5Y0RCCN.jpg?w=1200&h=705&fit=crop&crop=faces%2Cfocalpoint 1200w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/releases\/2026\/01\/STScI-01KDNZZAJQ5ZAZJK3FM5Y0RCCN.jpg?w=2000&h=1174&fit=crop&crop=faces%2Cfocalpoint 2000w\" sizes=\"auto, (max-width: 3840px) 100vw, 3840px\"><\/figure>\n<\/div>\n<\/div>\n<\/div>\n<div class=\"grid-col-8 desktop:grid-col-10 padding-left-3 desktop:padding-left-0\">\n<div class=\"grid-row flex-align-center\">\n<div class=\"grid-col-12 desktop:grid-col-6\">\n<h2 class=\"heading-36 margin-0\">Betelgeuse: Effect of Companion Star Wake<\/h2>\n<\/div>\n<div class=\"grid-col-12 desktop:grid-col-6\">\n<p class=\"p-md margin-0 color-carbon-black-important\">Scientists used NASA\u2019s Hubble Space Telescope to look for evidence of a wake being generated by a companion star orbiting Betelgeuse. The team found a noticeable difference in light shown in the lefthand peak when the companion star was at different points in its orbit.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<div class=\"grid-col-2 desktop:grid-col-1 display-flex flex-justify-end\">\n\t\t\t\t\t\t<a href=\"https:\/\/science.nasa.gov\/asset\/hubble\/betelgeuse-effect-of-companion-star-wake\/\" target=\"\" aria-label=\"Betelgeuse: Effect of Companion Star Wake\" class=\"link-external-false\" rel=\"noopener\"><br \/>\n <svg class=\"hds-featured-link-list-button margin-left-auto margin-right-0\" viewbox=\"0 0 32 32\" fill=\"none\">\n <circle class=\"color-nasa-red\" cx=\"16\" cy=\"16\" r=\"16\"><\/circle><path d=\"M8 16.956h12.604l-3.844 4.106 1.252 1.338L24 16l-5.988-6.4-1.252 1.338 3.844 4.106H8v1.912z\" class=\"color-spacesuit-white\"><\/path>\n <\/svg><br \/>\n\t\t\t\t\t\t<\/a>\n\t\t\t\t\t<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<p>\n<\/p>\n<div class=\"nasa-gb-align-full width-full maxw-full padding-x-3 padding-y-0 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href=\"https:\/\/science.nasa.gov\/feed\/\" aria-label=\"Subscribe to RSS feed.\"><br \/>\n\t\t\t\t\t\t\t\t<svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewbox=\"0 0 800 800\" aria-hidden=\"true\"><path d=\"M493 652H392c0-134-111-244-244-244V307c189 0 345 156 345 345zm71 0c0-228-188-416-416-416V132c285 0 520 235 520 520z\"><\/path><circle cx=\"219\" cy=\"581\" r=\"71\"><\/circle><\/svg><br \/>\n\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t<\/li>\n<\/ul>\n<\/div>\n<\/div>\n<\/div>\n<div class=\"grid-col-12 desktop:grid-col-5 padding-right-4 margin-bottom-5 desktop:margin-bottom-0\">\n<div class=\"padding-top-3 border-top-1px border-color-carbon-black\">\n<div class=\"margin-bottom-2\">\n<h2 class=\"heading-14\">Details<\/h2>\n<\/div>\n<div class=\"grid-row margin-bottom-3\">\n<div class=\"grid-col-4\">\n<div class=\"subheading\">Last Updated<\/div>\n<\/div>\n<div class=\"grid-col-8\">Jan 05, 2026<\/div>\n<\/div>\n<div class=\"grid-row margin-bottom-3\">\n<div class=\"grid-col-4\">\n<div class=\"subheading\">Editor<\/div>\n<\/div>\n<div class=\"grid-col-8\">Andrea Gianopoulos<\/div>\n<\/div>\n<div class=\"grid-row\">\n<div class=\"grid-col-4\">\n<div class=\"subheading\">Location<\/div>\n<\/div>\n<div class=\"grid-col-8\"><a class=\"hds-location-tag-name\" href=\"https:\/\/nasa.gov\/goddard\" rel=\"noopener\"><span class=\"hds-meta-heading\">NASA Goddard Space Flight Center<\/span><\/a><\/div>\n<\/div>\n<div class=\"grid-row margin-y-3\">\n<div class=\"grid-col-4\">\n<div class=\"subheading\">Contact<\/div>\n<\/div>\n<div class=\"grid-col-8\">\n<div class=\"margin-bottom-3\">\n<div class=\"heading-16 padding-bottom-1 border-bottom margin-bottom-2\">Media<\/div>\n<div class=\"cnd-extra-left-wysiwyg\">\n<p><strong>Claire Andreoli<\/strong><br \/>\nNASA\u2019s Goddard Space Flight Center<br \/>\nGreenbelt, Maryland<br \/>\n<a href=\"mailto:claire.andreoli@nasa.gov\">claire.andreoli@nasa.gov<\/a><\/p>\n<p><strong>Amy Oliver<\/strong><br \/>\nCenter for Astrophysics | Harvard & Smithsonian<br \/>\nCambridge, Massachusetts<\/p>\n<p><strong>Christine Pulliam<\/strong><br \/>\nSpace Telescope Science Institute<br \/>\nBaltimore, Maryland<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<div class=\"grid-col-12 desktop:grid-col-5 padding-right-4 margin-bottom-5 desktop:margin-bottom-0\">\n<div class=\"padding-top-3 border-top-1px border-color-carbon-black \">\n<div class=\"margin-bottom-2\">\n<h2 class=\"heading-14\">Related Terms<\/h2>\n<\/div>\n<ul class=\"article-tags\">\n<li class=\"article-tag\"><a href=\"https:\/\/science.nasa.gov\/mission\/hubble\" rel=\"noopener\">Hubble Space Telescope<\/a><\/li>\n<li class=\"article-tag\"><a href=\"https:\/\/science.nasa.gov\/astrophysics\/\" rel=\"noopener\">Astrophysics<\/a><\/li>\n<li class=\"article-tag\"><a href=\"https:\/\/science.nasa.gov\/astrophysics\/\" rel=\"noopener\">Astrophysics Division<\/a><\/li>\n<li class=\"article-tag\"><a href=\"https:\/\/science.nasa.gov\/category\/universe\/stars\/binary-stars\/\" rel=\"noopener\">Binary Stars<\/a><\/li>\n<li class=\"article-tag\"><a href=\"https:\/\/www.nasa.gov\/goddard\/\" rel=\"noopener\">Goddard Space Flight Center<\/a><\/li>\n<li class=\"article-tag\"><a href=\"https:\/\/science.nasa.gov\/universe\/stars\/\" rel=\"noopener\">Stars<\/a><\/li>\n<li class=\"article-tag\"><a href=\"https:\/\/science.nasa.gov\/universe\/\" rel=\"noopener\">The Universe<\/a><\/li>\n<\/ul>\n<\/div>\n<\/div>\n<\/div>\n<\/section>\n<\/div>\n<div class=\"hds-topic-cards nasa-gb-align-full maxw-full width-full padding-y-6 padding-x-3 color-mode-dark hds-module hds-module-full alignfull wp-block-nasa-blocks-topic-cards\">\n<div class=\"grid-container grid-container-block-lg padding-x-0\">\n<div class=\"grid-row flex-align-center margin-bottom-3\">\n<div class=\"desktop:grid-col-8 margin-bottom-2 desktop:margin-bottom-0\">\n<div class=\"label color-carbon-60 margin-bottom-2\">Keep Exploring<\/div>\n<h2 class=\"heading-36 line-height-sm\">Discover More Topics From Hubble<\/h2>\n<\/div>\n<\/div>\n<div class=\"grid-row grid-gap-2 hds-topic-cards-wrapper\">\n\t\t\t\t\t<a href=\"https:\/\/science.nasa.gov\/mission\/hubble\/\" class=\"mobile:grid-col-12 tablet:grid-col-6 desktop:grid-col-3 topic-card margin-bottom-4 desktop:margin-bottom-0\" rel=\"noopener\"><\/p>\n<div class=\"hds-topic-card hds-cover-wrapper cover-hover-zoom bg-carbon-black\">\n<div class=\"skrim-overlay skrim-overlay-dark skrim-left mobile-skrim-top padding-3 display-flex flex-align-end flex-justify-start z-200\">\n<div>\n<h3 class=\"hds-topic-card-heading heading-29 color-spacesuit-white line-height-sm margin-top-0 margin-bottom-1\">\n\t\t\t\t\t\t\t\t<span>Hubble Space Telescope<\/span><br \/>\n\t\t\t\t\t\t\t\t<svg viewbox=\"0 0 32 32\" fill=\"none\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><circle class=\"color-nasa-red\" cx=\"16\" cy=\"16\" r=\"16\"><\/circle><path d=\"M8 16.956h12.604l-3.844 4.106 1.252 1.338L24 16l-5.988-6.4-1.252 1.338 3.844 4.106H8v1.912z\" class=\"color-spacesuit-white\"><\/path><\/svg><br \/>\n\t\t\t\t\t\t\t<\/h3>\n<p class=\"margin-bottom-0 margin-top-2 color-carbon-20-important\">Since its 1990 launch, the Hubble Space Telescope has changed our fundamental understanding of the universe.<\/p>\n<\/div>\n<\/div>\n<figure class=\"hds-media-background \"><img decoding=\"async\" width=\"1920\" height=\"1080\" src=\"https:\/\/assets.science.nasa.gov\/content\/dam\/science\/missions\/hubble\/videos\/hubble-banner-animation-nov-2025-compressed.gif?w=1920&h=1080&fit=clip&crop=faces%2Cfocalpoint\" class=\"attachment-1536x1536 size-1536x1536\" alt=\"\" block_context=\"nasa-block\" loading=\"lazy\"><\/figure>\n<\/div>\n<p><\/a><br \/>\n\t\t\t\t\t<a href=\"https:\/\/science.nasa.gov\/mission\/hubble\/science\/science-highlights\/\" class=\"mobile:grid-col-12 tablet:grid-col-6 desktop:grid-col-3 topic-card margin-bottom-4 desktop:margin-bottom-0\" rel=\"noopener\"><\/p>\n<div class=\"hds-topic-card hds-cover-wrapper cover-hover-zoom bg-carbon-black\">\n<div class=\"skrim-overlay skrim-overlay-dark skrim-left mobile-skrim-top padding-3 display-flex flex-align-end flex-justify-start z-200\">\n<div>\n<p class=\"hds-topic-card-heading heading-29 color-spacesuit-white line-height-sm margin-top-0 margin-bottom-1\">\n\t\t\t\t\t\t\t\t<span>Hubble Science Highlights<\/span><br \/>\n\t\t\t\t\t\t\t\t<svg viewbox=\"0 0 32 32\" fill=\"none\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><circle class=\"color-nasa-red\" cx=\"16\" cy=\"16\" r=\"16\"><\/circle><path d=\"M8 16.956h12.604l-3.844 4.106 1.252 1.338L24 16l-5.988-6.4-1.252 1.338 3.844 4.106H8v1.912z\" class=\"color-spacesuit-white\"><\/path><\/svg>\n\t\t\t\t\t\t\t<\/p>\n<\/div>\n<\/div>\n<figure class=\"hds-media-background \"><img decoding=\"async\" width=\"539\" height=\"565\" src=\"https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/astro\/universe\/internal_resources\/462\/Pillars_of_Creation-1.jpeg?w=539&h=565&fit=clip&crop=faces%2Cfocalpoint\" class=\"attachment-1536x1536 size-1536x1536\" alt=\"\" block_context=\"nasa-block\" loading=\"lazy\"><\/figure>\n<\/div>\n<p><\/a><br \/>\n\t\t\t\t\t<a href=\"https:\/\/science.nasa.gov\/mission\/hubble\/multimedia\/hubble-images\/\" class=\"mobile:grid-col-12 tablet:grid-col-6 desktop:grid-col-3 topic-card margin-bottom-4 desktop:margin-bottom-0\" rel=\"noopener\"><\/p>\n<div class=\"hds-topic-card hds-cover-wrapper cover-hover-zoom bg-carbon-black\">\n<div class=\"skrim-overlay skrim-overlay-dark skrim-left mobile-skrim-top padding-3 display-flex flex-align-end flex-justify-start z-200\">\n<div>\n<p class=\"hds-topic-card-heading heading-29 color-spacesuit-white line-height-sm margin-top-0 margin-bottom-1\">\n\t\t\t\t\t\t\t\t<span>Hubble Images<\/span><br \/>\n\t\t\t\t\t\t\t\t<svg viewbox=\"0 0 32 32\" fill=\"none\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><circle class=\"color-nasa-red\" cx=\"16\" cy=\"16\" r=\"16\"><\/circle><path d=\"M8 16.956h12.604l-3.844 4.106 1.252 1.338L24 16l-5.988-6.4-1.252 1.338 3.844 4.106H8v1.912z\" class=\"color-spacesuit-white\"><\/path><\/svg>\n\t\t\t\t\t\t\t<\/p>\n<\/div>\n<\/div>\n<figure class=\"hds-media-background \"><img decoding=\"async\" width=\"1120\" height=\"1120\" src=\"https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/releases\/2024\/07\/STScI-01J1X1RNTC893XMKJREG898ZXB.tif?w=1120&h=1120&fit=clip&crop=faces%2Cfocalpoint\" class=\"attachment-1536x1536 size-1536x1536\" alt=\"\" block_context=\"nasa-block\" loading=\"lazy\" srcset=\"https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/releases\/2024\/07\/STScI-01J1X1RNTC893XMKJREG898ZXB.tif?w=1120&h=1120&fit=crop&crop=faces%2Cfocalpoint 1120w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/releases\/2024\/07\/STScI-01J1X1RNTC893XMKJREG898ZXB.tif?w=150&h=150&fit=crop&crop=faces%2Cfocalpoint 150w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/releases\/2024\/07\/STScI-01J1X1RNTC893XMKJREG898ZXB.tif?w=300&h=300&fit=crop&crop=faces%2Cfocalpoint 300w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/releases\/2024\/07\/STScI-01J1X1RNTC893XMKJREG898ZXB.tif?w=768&h=768&fit=crop&crop=faces%2Cfocalpoint 768w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/releases\/2024\/07\/STScI-01J1X1RNTC893XMKJREG898ZXB.tif?w=1024&h=1024&fit=crop&crop=faces%2Cfocalpoint 1024w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/releases\/2024\/07\/STScI-01J1X1RNTC893XMKJREG898ZXB.tif?w=50&h=50&fit=crop&crop=faces%2Cfocalpoint 50w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/releases\/2024\/07\/STScI-01J1X1RNTC893XMKJREG898ZXB.tif?w=100&h=100&fit=crop&crop=faces%2Cfocalpoint 100w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/releases\/2024\/07\/STScI-01J1X1RNTC893XMKJREG898ZXB.tif?w=200&h=200&fit=crop&crop=faces%2Cfocalpoint 200w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/releases\/2024\/07\/STScI-01J1X1RNTC893XMKJREG898ZXB.tif?w=400&h=400&fit=crop&crop=faces%2Cfocalpoint 400w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/releases\/2024\/07\/STScI-01J1X1RNTC893XMKJREG898ZXB.tif?w=600&h=600&fit=crop&crop=faces%2Cfocalpoint 600w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/releases\/2024\/07\/STScI-01J1X1RNTC893XMKJREG898ZXB.tif?w=900&h=900&fit=crop&crop=faces%2Cfocalpoint 900w\" sizes=\"auto, (max-width: 1120px) 100vw, 1120px\"><\/figure>\n<\/div>\n<p><\/a><br \/>\n\t\t\t\t\t<a href=\"https:\/\/science.nasa.gov\/?post_type=mission&p=53188\" class=\"mobile:grid-col-12 tablet:grid-col-6 desktop:grid-col-3 topic-card margin-bottom-4 desktop:margin-bottom-0\" rel=\"noopener\"><\/p>\n<div class=\"hds-topic-card hds-cover-wrapper cover-hover-zoom bg-carbon-black\">\n<div class=\"skrim-overlay skrim-overlay-dark skrim-left mobile-skrim-top padding-3 display-flex flex-align-end flex-justify-start z-200\">\n<div>\n<p class=\"hds-topic-card-heading heading-29 color-spacesuit-white line-height-sm margin-top-0 margin-bottom-1\">\n\t\t\t\t\t\t\t\t<span>Hubble News<\/span><br \/>\n\t\t\t\t\t\t\t\t<svg viewbox=\"0 0 32 32\" fill=\"none\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><circle class=\"color-nasa-red\" cx=\"16\" cy=\"16\" r=\"16\"><\/circle><path d=\"M8 16.956h12.604l-3.844 4.106 1.252 1.338L24 16l-5.988-6.4-1.252 1.338 3.844 4.106H8v1.912z\" class=\"color-spacesuit-white\"><\/path><\/svg>\n\t\t\t\t\t\t\t<\/p>\n<\/div>\n<\/div>\n<figure class=\"hds-media-background \"><img decoding=\"async\" width=\"1651\" height=\"1651\" src=\"https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/releases\/2005\/02\/STScI-01EVT8D2PRXPF512PH8C8DCXXM.tif?w=1651&h=1651&fit=clip&crop=faces%2Cfocalpoint\" class=\"attachment-1536x1536 size-1536x1536\" alt=\"\" block_context=\"nasa-block\" loading=\"lazy\" srcset=\"https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/releases\/2005\/02\/STScI-01EVT8D2PRXPF512PH8C8DCXXM.tif?w=1651&h=1651&fit=crop&crop=faces%2Cfocalpoint 1651w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/releases\/2005\/02\/STScI-01EVT8D2PRXPF512PH8C8DCXXM.tif?w=150&h=150&fit=crop&crop=faces%2Cfocalpoint 150w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/releases\/2005\/02\/STScI-01EVT8D2PRXPF512PH8C8DCXXM.tif?w=300&h=300&fit=crop&crop=faces%2Cfocalpoint 300w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/releases\/2005\/02\/STScI-01EVT8D2PRXPF512PH8C8DCXXM.tif?w=768&h=768&fit=crop&crop=faces%2Cfocalpoint 768w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/releases\/2005\/02\/STScI-01EVT8D2PRXPF512PH8C8DCXXM.tif?w=1024&h=1024&fit=crop&crop=faces%2Cfocalpoint 1024w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/releases\/2005\/02\/STScI-01EVT8D2PRXPF512PH8C8DCXXM.tif?w=1536&h=1536&fit=crop&crop=faces%2Cfocalpoint 1536w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/releases\/2005\/02\/STScI-01EVT8D2PRXPF512PH8C8DCXXM.tif?w=50&h=50&fit=crop&crop=faces%2Cfocalpoint 50w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/releases\/2005\/02\/STScI-01EVT8D2PRXPF512PH8C8DCXXM.tif?w=100&h=100&fit=crop&crop=faces%2Cfocalpoint 100w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/releases\/2005\/02\/STScI-01EVT8D2PRXPF512PH8C8DCXXM.tif?w=200&h=200&fit=crop&crop=faces%2Cfocalpoint 200w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/releases\/2005\/02\/STScI-01EVT8D2PRXPF512PH8C8DCXXM.tif?w=400&h=400&fit=crop&crop=faces%2Cfocalpoint 400w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/releases\/2005\/02\/STScI-01EVT8D2PRXPF512PH8C8DCXXM.tif?w=600&h=600&fit=crop&crop=faces%2Cfocalpoint 600w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/releases\/2005\/02\/STScI-01EVT8D2PRXPF512PH8C8DCXXM.tif?w=900&h=900&fit=crop&crop=faces%2Cfocalpoint 900w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/releases\/2005\/02\/STScI-01EVT8D2PRXPF512PH8C8DCXXM.tif?w=1200&h=1200&fit=crop&crop=faces%2Cfocalpoint 1200w\" sizes=\"auto, (max-width: 1651px) 100vw, 1651px\"><\/figure>\n<\/div>\n<p><\/a>\n\t\t\t\t<\/div>\n<\/div>\n<\/div>\n<p class=\"wpematico_credit\"><small>Powered by <a href=\"http:\/\/www.wpematico.com\" target=\"_blank\">WPeMatico<\/a><\/small><\/p>\n<p><a href=\"https:\/\/science.nasa.gov\/missions\/hubble\/nasa-hubble-helps-detect-wake-of-betelgeuses-elusive-companion-star\/\" target=\"_blank\" rel=\"noopener\">Get The Details…<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Using new observations from NASA\u2019s Hubble Space Telescope and ground-based observatories, astronomers tracked the influence of a recently discovered companion star, Siwarha, on the gas around Betelgeuse. The research, from scientists at the Center for Astrophysics | Harvard & Smithsonian (CfA), reveals a trail of dense gas swirling through Betelgeuse\u2019s vast, extended atmosphere, shedding light [\u2026] <a class=\"continue-reading-link\" href=\"https:\/\/zobi.alcowep.com\/bourtagshdrevxnls658739\/nasa-hubble-helps-detect-wake-of-betelgeuses-elusive-companion-star\/\"> Continue reading <span class=\"meta-nav\">→ <\/span><\/a><\/p>\n<div class='heateorSssClear'><\/div><div class='heateor_sss_sharing_container heateor_sss_horizontal_sharing' data-heateor-sss-href='https:\/\/zobi.alcowep.com\/bourtagshdrevxnls658739\/nasa-hubble-helps-detect-wake-of-betelgeuses-elusive-companion-star\/'><div class='heateor_sss_sharing_title' style=\"font-weight:bold\" >Spread the love<\/div><div class=\"heateor_sss_sharing_ul\"><a aria-label=\"Facebook\" class=\"heateor_sss_facebook\" 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