{"id":12542,"date":"2024-11-21T18:19:43","date_gmt":"2024-11-21T22:19:43","guid":{"rendered":"https:\/\/zobi.alcowep.com\/bourtagshdrevxnls658739\/nasas-hubble-finds-sizzling-details-about-young-star-fu-orionis\/"},"modified":"2024-11-21T18:19:43","modified_gmt":"2024-11-21T22:19:43","slug":"nasas-hubble-finds-sizzling-details-about-young-star-fu-orionis","status":"publish","type":"post","link":"https:\/\/zobi.alcowep.com\/bourtagshdrevxnls658739\/nasas-hubble-finds-sizzling-details-about-young-star-fu-orionis\/","title":{"rendered":"NASA\u2019s Hubble Finds Sizzling Details About Young Star FU Orionis"},"content":{"rendered":"<h2 style=\"text-align: center;\">NASA\u2019s Hubble Finds Sizzling Details About Young Star FU Orionis<\/h2>\n<p><!-- no image --><\/p>\n<div class=\" hds-module hds-module-full wp-block-nasa-blocks-secondary-navigation\">\n<div class=\"hds-secondary-navigation-wrapper z-top width-100 padding-0\">\n<div class=\"hds-secondary-navigation width-full 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flex-column padding-0\">\n<div class=\"hds-foreground-wrapper display-flex flex-direction-column\">\n<div class=\"grid-container grid-container-block margin-top-auto width-full maxw-desktop-lg padding-y-9 padding-x-3 desktop:padding-x-3 z-400\">\n<div class=\"z-400 grid-col-12 tablet:grid-col-12 desktop:grid-col-7 z-400\">\n<div class=\"margin-0\">\n<div class=\"label color-spacesuit-white margin-bottom-2\">5 Min Read<\/div>\n<h1 class=\"heading-41 line-height-md color-spacesuit-white-important\">\n\t\t\t\t\t\t\t\tNASA\u2019s Hubble Finds Sizzling Details About Young Star FU Orionis\t\t\t\t\t\t\t<\/h1>\n<\/div>\n<\/div>\n<div class=\"grid-col-12 tablet:grid-col-12 desktop:grid-col-5\"><\/div>\n<div class=\"skrim-overlay skrim-left mobile-skrim-top z-200\"><\/div>\n<figure class=\"hds-media-background  \"><img fetchpriority=\"high\" decoding=\"async\" width=\"4534\" height=\"2550\" src=\"https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/stars\/artist-concepts\/Hubble_FUOrionis_STScI-01JD10SWK9VB6MQ9440ERZ8QP0.jpg?w=4534&#038;h=2550&#038;fit=clip&#038;crop=faces%2Cfocalpoint\" class=\"attachment-1536x1536 size-1536x1536\" alt=\"Artist's concept of early stages of the young star FU Orionis outburst. The star, a bright yellow sphere near the center, and its fluffy disk of gas and dust are slightly tilted, extending from the top left corner to the bottom right. The swirling disk is bright yellow close to the star and gradually transitions to dark orange moving toward the edges of the frame. The top left and right corners reveal a black, starless background.\" block_context=\"nasa-block\" srcset=\"https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/stars\/artist-concepts\/Hubble_FUOrionis_STScI-01JD10SWK9VB6MQ9440ERZ8QP0.jpg?w=4534&#038;h=2550&#038;fit=crop&#038;crop=faces%2Cfocalpoint 4534w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/stars\/artist-concepts\/Hubble_FUOrionis_STScI-01JD10SWK9VB6MQ9440ERZ8QP0.jpg?w=300&#038;h=169&#038;fit=crop&#038;crop=faces%2Cfocalpoint 300w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/stars\/artist-concepts\/Hubble_FUOrionis_STScI-01JD10SWK9VB6MQ9440ERZ8QP0.jpg?w=768&#038;h=432&#038;fit=crop&#038;crop=faces%2Cfocalpoint 768w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/stars\/artist-concepts\/Hubble_FUOrionis_STScI-01JD10SWK9VB6MQ9440ERZ8QP0.jpg?w=1024&#038;h=576&#038;fit=crop&#038;crop=faces%2Cfocalpoint 1024w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/stars\/artist-concepts\/Hubble_FUOrionis_STScI-01JD10SWK9VB6MQ9440ERZ8QP0.jpg?w=1536&#038;h=864&#038;fit=crop&#038;crop=faces%2Cfocalpoint 1536w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/stars\/artist-concepts\/Hubble_FUOrionis_STScI-01JD10SWK9VB6MQ9440ERZ8QP0.jpg?w=2048&#038;h=1152&#038;fit=crop&#038;crop=faces%2Cfocalpoint 2048w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/stars\/artist-concepts\/Hubble_FUOrionis_STScI-01JD10SWK9VB6MQ9440ERZ8QP0.jpg?w=400&#038;h=225&#038;fit=crop&#038;crop=faces%2Cfocalpoint 400w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/stars\/artist-concepts\/Hubble_FUOrionis_STScI-01JD10SWK9VB6MQ9440ERZ8QP0.jpg?w=600&#038;h=337&#038;fit=crop&#038;crop=faces%2Cfocalpoint 600w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/stars\/artist-concepts\/Hubble_FUOrionis_STScI-01JD10SWK9VB6MQ9440ERZ8QP0.jpg?w=900&#038;h=506&#038;fit=crop&#038;crop=faces%2Cfocalpoint 900w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/stars\/artist-concepts\/Hubble_FUOrionis_STScI-01JD10SWK9VB6MQ9440ERZ8QP0.jpg?w=1200&#038;h=675&#038;fit=crop&#038;crop=faces%2Cfocalpoint 1200w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/stars\/artist-concepts\/Hubble_FUOrionis_STScI-01JD10SWK9VB6MQ9440ERZ8QP0.jpg?w=2000&#038;h=1125&#038;fit=crop&#038;crop=faces%2Cfocalpoint 2000w\" sizes=\"(max-width: 4534px) 100vw, 4534px\" loading=\"eager\"><\/figure>\n<\/div>\n<\/div>\n<\/div>\n<div class=\"padding-y-3 padding-x-3\">\n<div class=\"grid-container grid-container-block padding-x-0\"><figcaption class=\"hds-caption maxw-mobile desktop:padding-x-3\">\n<div class=\"hds-caption-text p-sm margin-0 color-carbon-30\">\n<div><figcaption>An artist\u2019s concept of the early stages of the young star FU Orionis (FU Ori) outburst, surrounded by a disk of material.<\/figcaption><\/div>\n<\/div>\n<div class=\"hds-credits color-spacesuit-white-important\">\n\t\t\t\t\t\t<span>Credits: <\/span><br \/>\n\t\t\t\t\t\t<span>NASA-JPL, Caltech<\/span>\n\t\t\t\t\t<\/div>\n<\/figcaption><\/div>\n<\/div>\n<\/div>\n<p>In 1936, astronomers saw a puzzling event in the constellation Orion: the young star FU Orionis (FU Ori) became a hundred times brighter in a matter of months. At its peak, FU Ori was intrinsically 100 times brighter than our Sun. Unlike an exploding star though, it has declined in luminosity only languidly since then.<\/p>\n<p>Now, a team of astronomers has wielded NASA\u2019s <a href=\"https:\/\/science.nasa.gov\/mission\/hubble\/\" rel=\"noopener\">Hubble Space Telescope<\/a>\u2018s ultraviolet capabilities to learn more about the interaction between FU Ori\u2019s stellar surface and the accretion disk that has been dumping gas onto the growing star for nearly 90 years. They find that the inner disk touching the star is extraordinarily hot \u2014 which challenges conventional wisdom.<\/p>\n<p>The observations were made with the telescope\u2019s\u00a0<a href=\"https:\/\/science.nasa.gov\/mission\/hubble\/observatory\/design\/cosmic-origins-spectrograph\/\" rel=\"noopener\">COS (Cosmic Origins Spectrograph)<\/a>\u00a0and\u00a0<a href=\"https:\/\/science.nasa.gov\/mission\/hubble\/observatory\/design\/space-telescope-imaging-spectrograph\/\" rel=\"noopener\">STIS (Space Telescope Imaging Spectrograph)<\/a>\u00a0instruments. The data includes the first far-ultraviolet and new near-ultraviolet spectra of FU Ori.<\/p>\n<p>\u201cWe were hoping to validate the hottest part of the accretion disk model, to determine its maximum temperature, by measuring closer to the inner edge of the accretion disk than ever before,\u201d said Lynne Hillenbrand of Caltech in Pasadena, California, and a co-author of the paper. \u201cI think there was some hope that we would see something extra, like the interface between the star and its disk, but we were certainly not expecting it. The fact we saw so much extra \u2014 it was much brighter in the ultraviolet than we predicted \u2014 that was the big surprise.\u201d<\/p>\n<h1 class=\"wp-block-heading\">A Better Understanding of Stellar Accretion<\/h1>\n<p>Originally deemed to be a unique case among stars, FU Ori exemplifies a class of young, eruptive stars that undergo dramatic changes in brightness. These objects are a subset of classical T Tauri stars, which are newly forming stars that are building up by accreting material from their disk and the surrounding nebula. In classical T Tauri stars, the disk does not touch the star directly because it is restricted by the outward pressure of the star\u2019s magnetic field.<\/p>\n<p>The accretion disks around FU Ori objects, however, are susceptible to instabilities due to their enormous mass relative to the central star, interactions with a binary companion, or infalling material. Such instability means the mass accretion rate can change dramatically. The increased pace disrupts the delicate balance between the stellar magnetic field and the inner edge of the disk, leading to material moving closer in and eventually touching the star\u2019s surface.<\/p>\n<div class=\"hds-media hds-module wp-block-image\">\n<div class=\"margin-left-auto margin-right-auto nasa-block-align-wide\">\n<div class=\"hds-media-wrapper margin-left-auto margin-right-auto\">\n<figure class=\"hds-media-inner hds-cover-wrapper hds-media-ratio-fit \"><a href=\"https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/stars\/artist-concepts\/Hubble_FUOrionis_STScI-01JD10SWK9VB6MQ9440ERZ8QP0.jpg?w=4534&#038;h=2550&#038;fit=clip&#038;crop=faces%2Cfocalpoint\" rel=\"noopener\"><img loading=\"lazy\" decoding=\"async\" width=\"4534\" height=\"2550\" src=\"https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/stars\/artist-concepts\/Hubble_FUOrionis_STScI-01JD10SWK9VB6MQ9440ERZ8QP0.jpg?w=4534&#038;h=2550&#038;fit=clip&#038;crop=faces%2Cfocalpoint\" class=\"attachment-2048x2048 size-2048x2048\" alt=\"Artist's concept of early stages of the young star FU Orionis outburst. The star, a bright yellow sphere near the center, and its fluffy disk of gas and dust are slightly tilted, extending from the top left corner to the bottom right. The swirling disk is bright yellow close to the star and gradually transitions to dark orange moving toward the edges of the frame. The top left and right corners reveal a black, starless background.\" block_context=\"nasa-block\" srcset=\"https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/stars\/artist-concepts\/Hubble_FUOrionis_STScI-01JD10SWK9VB6MQ9440ERZ8QP0.jpg?w=4534&#038;h=2550&#038;fit=crop&#038;crop=faces%2Cfocalpoint 4534w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/stars\/artist-concepts\/Hubble_FUOrionis_STScI-01JD10SWK9VB6MQ9440ERZ8QP0.jpg?w=300&#038;h=169&#038;fit=crop&#038;crop=faces%2Cfocalpoint 300w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/stars\/artist-concepts\/Hubble_FUOrionis_STScI-01JD10SWK9VB6MQ9440ERZ8QP0.jpg?w=768&#038;h=432&#038;fit=crop&#038;crop=faces%2Cfocalpoint 768w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/stars\/artist-concepts\/Hubble_FUOrionis_STScI-01JD10SWK9VB6MQ9440ERZ8QP0.jpg?w=1024&#038;h=576&#038;fit=crop&#038;crop=faces%2Cfocalpoint 1024w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/stars\/artist-concepts\/Hubble_FUOrionis_STScI-01JD10SWK9VB6MQ9440ERZ8QP0.jpg?w=1536&#038;h=864&#038;fit=crop&#038;crop=faces%2Cfocalpoint 1536w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/stars\/artist-concepts\/Hubble_FUOrionis_STScI-01JD10SWK9VB6MQ9440ERZ8QP0.jpg?w=2048&#038;h=1152&#038;fit=crop&#038;crop=faces%2Cfocalpoint 2048w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/stars\/artist-concepts\/Hubble_FUOrionis_STScI-01JD10SWK9VB6MQ9440ERZ8QP0.jpg?w=400&#038;h=225&#038;fit=crop&#038;crop=faces%2Cfocalpoint 400w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/stars\/artist-concepts\/Hubble_FUOrionis_STScI-01JD10SWK9VB6MQ9440ERZ8QP0.jpg?w=600&#038;h=337&#038;fit=crop&#038;crop=faces%2Cfocalpoint 600w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/stars\/artist-concepts\/Hubble_FUOrionis_STScI-01JD10SWK9VB6MQ9440ERZ8QP0.jpg?w=900&#038;h=506&#038;fit=crop&#038;crop=faces%2Cfocalpoint 900w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/stars\/artist-concepts\/Hubble_FUOrionis_STScI-01JD10SWK9VB6MQ9440ERZ8QP0.jpg?w=1200&#038;h=675&#038;fit=crop&#038;crop=faces%2Cfocalpoint 1200w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/stars\/artist-concepts\/Hubble_FUOrionis_STScI-01JD10SWK9VB6MQ9440ERZ8QP0.jpg?w=2000&#038;h=1125&#038;fit=crop&#038;crop=faces%2Cfocalpoint 2000w\" sizes=\"auto, (max-width: 4534px) 100vw, 4534px\"><\/a><\/figure><figcaption class=\"hds-caption padding-y-2\">\n<div class=\"hds-caption-text p-sm margin-0\">This is an artist\u2019s concept of the early stages of the young star FU Orionis (FU Ori) outburst, surrounded by a disk of material. A team of astronomers has used the Hubble Space Telescope\u2019s ultraviolet capabilities to learn more about the interaction between FU Ori\u2019s stellar surface and the accretion disk that has been dumping gas onto the growing star for nearly 90 years. They found that the inner disk, touching the star, is much hotter than expected\u201416,000 kelvins\u2014nearly three times our Sun\u2019s surface temperature. That sizzling temperature is nearly twice as hot as previously believed.<\/div>\n<div class=\"hds-credits\">NASA-JPL, Caltech<\/div>\n<\/figcaption><\/div>\n<\/div>\n<\/div>\n<div class=\"nasa-gb-align-center nasa-button-link padding-y-1 padding-x-0 hds-module wp-block-nasa-blocks-related-link\">\n\t<a href=\"https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/stars\/artist-concepts\/Hubble_FUOrionis_STScI-01JD10SWK9VB6MQ9440ERZ8QP0.jpg\" target=\"_blank\" class=\"button-primary button-primary-md link-external-true\" aria-label=\"Download this image\" rel=\"noopener\"><br \/>\n\t\t<span class=\"line-height-alt-1\">Download this image<\/span><br \/>\n\t\t<svg viewbox=\"0 0 32 32\" fill=\"none\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><circle class=\"button-primary-circle\" 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<\/a><\/div>\n<p>The enhanced infall rate and proximity of the accretion disk to the star make FU Ori objects much brighter than a typical T Tauri star. In fact, during an outburst, the star itself is outshined by the disk. Furthermore, the disk material is orbiting rapidly as it approaches the star, much faster than the rotation rate of the stellar surface. This means that there should be a region where the disk impacts the star and the material slows down and heats up significantly.\u00a0<\/p>\n<p>\u201cThe Hubble data indicates a much hotter impact region than models have previously predicted,\u201d said Adolfo Carvalho of Caltech and lead author of the study. \u201cIn FU Ori, the temperature is 16,000 kelvins [nearly three times our Sun\u2019s surface temperature]. That sizzling temperature is almost twice the amount prior models have calculated. It challenges and encourages us to think of how such a jump in temperature can be explained.\u201d<\/p>\n<p>To address the significant difference in temperature between past models and the recent Hubble observations, the team offers a revised interpretation of the geometry within FU Ori\u2019s inner region: The accretion disk\u2019s material approaches the star and once it reaches the stellar surface, a hot shock is produced, which emits a lot of ultraviolet light.<\/p>\n<h1 class=\"wp-block-heading\">Planet Survival Around FU Ori<\/h1>\n<p>Understanding the mechanisms of FU Ori\u2019s rapid accretion process relates more broadly to ideas of planet formation and survival.<\/p>\n<p>\u201cOur revised model based on the Hubble data is not strictly bad news for planet evolution, it\u2019s sort of a mixed bag,\u201d explained Carvalho. \u201cIf the planet is far out in the disk as it\u2019s forming, outbursts from an FU Ori object should influence what kind of chemicals the planet will ultimately inherit. But if a forming planet is very close to the star, then it\u2019s a slightly different story. Within a couple outbursts, any planets that are forming very close to the star can rapidly move inward and eventually merge with it. You could lose, or at least completely fry, rocky planets forming close to such a star.\u201d<\/p>\n<p>Additional work with the Hubble UV observations is in progress. The team is carefully analyzing the various spectral emission lines from multiple elements present in the COS spectrum. This should provide further clues on FU Ori\u2019s environment, such as the kinematics of inflowing and outflowing gas within the inner region.<\/p>\n<p>\u201cA lot of these young stars are spectroscopically very rich at far ultraviolet wavelengths,\u201d reflected Hillenbrand. \u201cA combination of Hubble, its size and wavelength coverage, as well as FU Ori\u2019s fortunate circumstances, let us see further down into the engine of this fascinating star-type than ever before.\u201d<\/p>\n<p>These findings have been published in\u00a0<a href=\"https:\/\/iopscience.iop.org\/article\/10.3847\/2041-8213\/ad74eb\" target=\"_blank\" rel=\"noreferrer noopener\">The Astrophysical Journal Letters<\/a>.<\/p>\n<p>The observations were taken as part of General Observer program\u00a0<a href=\"https:\/\/www.stsci.edu\/cgi-bin\/get-proposal-info?id=17176&#038;observatory=HST\" target=\"_blank\" rel=\"noreferrer noopener\">17176<\/a>.<\/p>\n<p>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.<\/p>\n<div class=\"hds-social-media hds-social-media--horizontal grid-container grid-container-block nasa-gb-align- width-full maxw-full margin-y-0 padding-y-5 padding-x-3 desktop:padding-x-0 font-weight-bold hds-module wp-block-nasa-blocks-social-media-links\">\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 xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"24\" height=\"24\" viewbox=\"0 0 24 24\" aria-labelledby=\"facebookIconTitle\"><title>Facebook 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 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Andreoli<\/strong>\u00a0(<a href=\"mailto:claire.andreoli@nasa.gov\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>claire.andreoli@nasa.gov<\/strong><\/a>)<br \/><strong>NASA\u2019s\u00a0<\/strong><a href=\"http:\/\/www.nasa.gov\/goddard\"><strong>Goddard Space Flight Center<\/strong><\/a>,\u00a0<strong>Greenbelt, MD<\/strong><\/p>\n<p><strong>Abigail Major, Ray Villard<br \/>Space Telescope Science Institute, Baltimore, MD<\/strong><\/p>\n<div class=\"nasa-gb-align-full width-full maxw-full padding-x-3 padding-y-0 article_a hds-module hds-module-full 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&#038;text=NASA%26%238217%3Bs%20Hubble%20Finds%20Sizzling%20Details%20About%20Young%20Star%20FU%20Orionis&#038;url=https%3A%2F%2Fscience.nasa.gov%2Fmissions%2Fhubble%2Fnasas-hubble-finds-sizzling-details-about-young-star-fu-orionis%2F\" aria-label=\"Share on X.\"><br \/>\n\t\t\t\t\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\" 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\/>\n\t\t\t\t\t\t\t\t<svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewbox=\"0 0 24 24\" aria-hidden=\"true\"><path d=\"M4.98 3.5c0 1.381-1.11 2.5-2.48 2.5s-2.48-1.119-2.48-2.5c0-1.38 1.11-2.5 2.48-2.5s2.48 1.12 2.48 2.5zm.02 4.5h-5v16h5v-16zm7.982 0h-4.968v16h4.969v-8.399c0-4.67 6.029-5.052 6.029 0v8.399h4.988v-10.131c0-7.88-8.922-7.593-11.018-3.714v-2.155z\"><\/path><\/svg><br \/>\n\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t<\/li>\n<li class=\"social-icon social-icon-rss\">\n\t\t\t\t\t\t\t<a href=\"https:\/\/www.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\">Nov 21, 2024<\/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>\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\/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:\/\/www.nasa.gov\/goddard\/\">Goddard Space Flight Center<\/a><\/li>\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\/universe\/stars\/\" rel=\"noopener\">Stars<\/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 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\/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 loading=\"lazy\" decoding=\"async\" width=\"1512\" height=\"1536\" src=\"https:\/\/science.nasa.gov\/wp-content\/uploads\/2023\/07\/hubble-space-telescope-hst-6.jpg?w=1512\" class=\"attachment-1536x1536 size-1536x1536\" alt=\"\" block_context=\"nasa-block\" srcset=\"https:\/\/smd-cms.nasa.gov\/wp-content\/uploads\/2023\/07\/hubble-space-telescope-hst-6.jpg 4031w, https:\/\/smd-cms.nasa.gov\/wp-content\/uploads\/2023\/07\/hubble-space-telescope-hst-6.jpg?resize=295,300 295w, https:\/\/smd-cms.nasa.gov\/wp-content\/uploads\/2023\/07\/hubble-space-telescope-hst-6.jpg?resize=768,780 768w, https:\/\/smd-cms.nasa.gov\/wp-content\/uploads\/2023\/07\/hubble-space-telescope-hst-6.jpg?resize=1008,1024 1008w, https:\/\/smd-cms.nasa.gov\/wp-content\/uploads\/2023\/07\/hubble-space-telescope-hst-6.jpg?resize=1512,1536 1512w, https:\/\/smd-cms.nasa.gov\/wp-content\/uploads\/2023\/07\/hubble-space-telescope-hst-6.jpg?resize=2016,2048 2016w, https:\/\/smd-cms.nasa.gov\/wp-content\/uploads\/2023\/07\/hubble-space-telescope-hst-6.jpg?resize=50,50 50w, https:\/\/smd-cms.nasa.gov\/wp-content\/uploads\/2023\/07\/hubble-space-telescope-hst-6.jpg?resize=394,400 394w, https:\/\/smd-cms.nasa.gov\/wp-content\/uploads\/2023\/07\/hubble-space-telescope-hst-6.jpg?resize=591,600 591w, https:\/\/smd-cms.nasa.gov\/wp-content\/uploads\/2023\/07\/hubble-space-telescope-hst-6.jpg?resize=886,900 886w, https:\/\/smd-cms.nasa.gov\/wp-content\/uploads\/2023\/07\/hubble-space-telescope-hst-6.jpg?resize=1181,1200 1181w, https:\/\/smd-cms.nasa.gov\/wp-content\/uploads\/2023\/07\/hubble-space-telescope-hst-6.jpg?resize=1969,2000 1969w\" sizes=\"auto, (max-width: 1512px) 100vw, 1512px\"><\/figure>\n<\/div>\n<p><\/a><br \/>\n\t\t\t\t\t<a href=\"https:\/\/science.nasa.gov\/mission\/hubble\/science\/science-highlights\/exploring-the-birth-of-stars\/\" 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>Exploring the Birth of Stars<\/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 loading=\"lazy\" decoding=\"async\" width=\"1536\" height=\"1420\" src=\"https:\/\/science.nasa.gov\/wp-content\/uploads\/2023\/04\/eta-carinae-hubble20thpic-jpg.webp?w=1536\" class=\"attachment-1536x1536 size-1536x1536\" alt=\"\" block_context=\"nasa-block\" srcset=\"https:\/\/smd-cms.nasa.gov\/wp-content\/uploads\/2023\/04\/eta-carinae-hubble20thpic-jpg.webp 2216w, https:\/\/smd-cms.nasa.gov\/wp-content\/uploads\/2023\/04\/eta-carinae-hubble20thpic-jpg.webp?resize=300,277 300w, https:\/\/smd-cms.nasa.gov\/wp-content\/uploads\/2023\/04\/eta-carinae-hubble20thpic-jpg.webp?resize=768,710 768w, https:\/\/smd-cms.nasa.gov\/wp-content\/uploads\/2023\/04\/eta-carinae-hubble20thpic-jpg.webp?resize=1024,946 1024w, https:\/\/smd-cms.nasa.gov\/wp-content\/uploads\/2023\/04\/eta-carinae-hubble20thpic-jpg.webp?resize=1536,1420 1536w, https:\/\/smd-cms.nasa.gov\/wp-content\/uploads\/2023\/04\/eta-carinae-hubble20thpic-jpg.webp?resize=2048,1893 2048w, https:\/\/smd-cms.nasa.gov\/wp-content\/uploads\/2023\/04\/eta-carinae-hubble20thpic-jpg.webp?resize=400,370 400w, https:\/\/smd-cms.nasa.gov\/wp-content\/uploads\/2023\/04\/eta-carinae-hubble20thpic-jpg.webp?resize=600,555 600w, https:\/\/smd-cms.nasa.gov\/wp-content\/uploads\/2023\/04\/eta-carinae-hubble20thpic-jpg.webp?resize=900,832 900w, https:\/\/smd-cms.nasa.gov\/wp-content\/uploads\/2023\/04\/eta-carinae-hubble20thpic-jpg.webp?resize=1200,1109 1200w, https:\/\/smd-cms.nasa.gov\/wp-content\/uploads\/2023\/04\/eta-carinae-hubble20thpic-jpg.webp?resize=2000,1848 2000w\" sizes=\"auto, (max-width: 1536px) 100vw, 1536px\"><\/figure>\n<\/div>\n<p><\/a><br \/>\n\t\t\t\t\t<a href=\"https:\/\/science.nasa.gov\/mission\/hubble\/science\/explore-the-night-sky\/hubbles-night-sky-challenge\/\" 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\u2019s Night Sky Challenge<\/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 loading=\"lazy\" decoding=\"async\" width=\"375\" height=\"350\" src=\"https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/mission\/35th-anniversary\/stargazing-banner-2_crop.jpg?w=375&#038;h=350&#038;fit=clip&#038;crop=faces%2Cfocalpoint\" class=\"attachment-1536x1536 size-1536x1536\" alt=\"\" block_context=\"nasa-block\" srcset=\"https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/mission\/35th-anniversary\/stargazing-banner-2_crop.jpg?w=375&#038;h=350&#038;fit=crop&#038;crop=faces%2Cfocalpoint 375w, https:\/\/assets.science.nasa.gov\/dynamicimage\/assets\/science\/missions\/hubble\/mission\/35th-anniversary\/stargazing-banner-2_crop.jpg?w=300&#038;h=280&#038;fit=crop&#038;crop=faces%2Cfocalpoint 300w\" sizes=\"auto, (max-width: 375px) 100vw, 375px\"><\/figure>\n<\/div>\n<p><\/a><br \/>\n\t\t\t\t\t<a href=\"https:\/\/science.nasa.gov\/mission\/hubble\/multimedia\/e-books\/hubble-focus-the-lives-of-stars\/\" 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 Focus: The Lives of Stars<\/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\">This e-book highlights the mission\u2019s recent discoveries and observations related to the birth, evolution, and death of stars.<\/p>\n<\/div>\n<\/div>\n<figure class=\"hds-media-background  \"><img loading=\"lazy\" decoding=\"async\" width=\"1536\" height=\"864\" src=\"https:\/\/science.nasa.gov\/wp-content\/uploads\/2022\/06\/hubblefocus-thelivesofstars.jpeg?w=1536\" class=\"attachment-1536x1536 size-1536x1536\" alt=\"\" block_context=\"nasa-block\" srcset=\"https:\/\/smd-cms.nasa.gov\/wp-content\/uploads\/2022\/06\/hubblefocus-thelivesofstars.jpeg 3840w, https:\/\/smd-cms.nasa.gov\/wp-content\/uploads\/2022\/06\/hubblefocus-thelivesofstars.jpeg?resize=300,169 300w, https:\/\/smd-cms.nasa.gov\/wp-content\/uploads\/2022\/06\/hubblefocus-thelivesofstars.jpeg?resize=768,432 768w, https:\/\/smd-cms.nasa.gov\/wp-content\/uploads\/2022\/06\/hubblefocus-thelivesofstars.jpeg?resize=1024,576 1024w, https:\/\/smd-cms.nasa.gov\/wp-content\/uploads\/2022\/06\/hubblefocus-thelivesofstars.jpeg?resize=1536,864 1536w, https:\/\/smd-cms.nasa.gov\/wp-content\/uploads\/2022\/06\/hubblefocus-thelivesofstars.jpeg?resize=2048,1152 2048w, https:\/\/smd-cms.nasa.gov\/wp-content\/uploads\/2022\/06\/hubblefocus-thelivesofstars.jpeg?resize=400,225 400w, https:\/\/smd-cms.nasa.gov\/wp-content\/uploads\/2022\/06\/hubblefocus-thelivesofstars.jpeg?resize=600,338 600w, https:\/\/smd-cms.nasa.gov\/wp-content\/uploads\/2022\/06\/hubblefocus-thelivesofstars.jpeg?resize=900,506 900w, https:\/\/smd-cms.nasa.gov\/wp-content\/uploads\/2022\/06\/hubblefocus-thelivesofstars.jpeg?resize=1200,675 1200w, https:\/\/smd-cms.nasa.gov\/wp-content\/uploads\/2022\/06\/hubblefocus-thelivesofstars.jpeg?resize=2000,1125 2000w\" sizes=\"auto, (max-width: 1536px) 100vw, 1536px\"><\/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\" rel=\"noopener\">WPeMatico<\/a><\/small><\/p>\n<p><a href=\"https:\/\/science.nasa.gov\/missions\/hubble\/nasas-hubble-finds-sizzling-details-about-young-star-fu-orionis\/\" target=\"_blank\" rel=\"noopener\">Get The Details&#8230;<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>In 1936, astronomers saw a puzzling event in the constellation Orion: the young star FU Orionis (FU Ori) became a hundred times brighter in a matter of months. At its peak, FU Ori was intrinsically 100 times brighter than our Sun. Unlike an exploding star though, it has declined in luminosity only languidly since then. 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