{"id":16727,"date":"2026-11-10T14:02:13","date_gmt":"2026-11-10T18:02:13","guid":{"rendered":"https:\/\/zobi.alcowep.com\/bourtagshdrevxnls658739\/nasa-scientists-show-how-gravitational-waves-can-reveal-new-worlds\/"},"modified":"2026-11-10T14:02:13","modified_gmt":"2026-11-10T18:02:13","slug":"nasa-scientists-show-how-gravitational-waves-can-reveal-new-worlds","status":"publish","type":"post","link":"https:\/\/zobi.alcowep.com\/bourtagshdrevxnls658739\/nasa-scientists-show-how-gravitational-waves-can-reveal-new-worlds\/","title":{"rendered":"NASA Scientists Show How Gravitational Waves Can Reveal New Worlds"},"content":{"rendered":"

NASA Scientists Show How Gravitational Waves Can Reveal New Worlds<\/h2>\n

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5 min read<\/p>\n

NASA Scientists Show How Gravitational Waves Can Reveal New Worlds<\/h1>\n<\/div>\n<\/div>\n<\/div>\n

The LISA (Laser Interferometer Space Antenna) observatory, now in development, will detect gravitational waves, the tiny ripples in space-time caused by orbiting masses. Now two studies led by NASA astrophysicists show in new detail how LISA could reveal a new and unique population of exoplanets \u2014 worlds beyond our solar system \u2014 throughout our galaxy.\u00a0<\/p>\n

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Watch to learn how the presence of a planet modifies the gravitational wave signal from tightly orbiting white dwarfs. The LISA (Laser Interferometer Space Antenna) observatory could detect a Jupiter-mass planet in such systems up to thousands of light-years away. NASA\u2019s Goddard Space Flight Center<\/strong><\/figcaption><\/figure>\n
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\n\t\t\tDownload high-resolution video from NASA\u2019s Scientific Visualization Studio<\/span><\/p>\n

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\u201cThe most common source for LISA is expected to be double white dwarf systems, which are binaries composed of white dwarfs in tight orbits,\u201d said Casey McGrath, a postdoctoral researcher at the University of Maryland, Baltimore County and NASA\u2019s Goddard Space Flight Center<\/a> in Greenbelt, Maryland. \u201cIf an exoplanet also orbits within one of these systems, its presence becomes imprinted on the gravitational wave signal in a way we\u2019ll be able to uncover.\u201d<\/p>\n

Two papers published Tuesday in The Astrophysical Journal detail the findings. The first<\/a>, authored solely by McGrath, examines the detection method and determines the planet masses and orbital periods where it would work best. The second paper<\/a>, by McGrath and coauthors, investigates how such planets could be confirmed using NASA\u2019s James Webb Space Telescope<\/a>.<\/p>\n

The possibility of detecting exoplanets around LISA double white dwarf systems was first proposed<\/a> by Japanese astronomer Naoki Seto in 2008.<\/p>\n

Led by ESA (European Space Agency), the LISA mission<\/a> is slated for launch in the mid-2030s. As a collaborative partner, NASA is contributing the telescopes, other critical hardware, and engineering and scientific support as part of its mission to better understand how the universe works.<\/p>\n

The LISA detection method is similar to one called radial velocity<\/a> that uses light and is already employed to find exoplanets around nearby stars. As a planet orbits, its gravity tugs on its host star, imparting a small reflex motion, or wobble, onto it. This wobble causes the star\u2019s spectrum to oscillate, with spectral lines shifting from redder wavelengths as the star moves away from us to bluer ones as the star moves toward us. The shift is due to a phenomenon called the Doppler effect<\/a>.<\/p>\n

\u201cSomething similar occurs with gravitational waves,\u201d said Scott Noble, a theoretical astrophysicist at NASA Goddard and a coauthor on the confirmation paper. \u201cBy themselves, double white dwarfs will emit gravitational waves at a nearly continuous frequency. Add a sufficiently massive planet to the system, and its presence causes the binary to experience reflex motion, adding a Doppler modulation to the gravitational signal.\u201d\u00a0<\/p>\n

For LISA, this modulation will appear as sidebands, secondary signals at both higher and lower frequencies than the primary one. \u00a0<\/p>\n

McGrath likens the situation to modern radio communication, where some of the energy of a main radio carrier frequency goes into forming sidebands at adjacent upper and lower frequencies that carry messages (like voices or music). For gravitational waves, the sidebands carry messages about the presence of a planet.<\/p>\n

White dwarfs <\/a>are the Earth-sized remnants of stars like the Sun. While exoplanets have been detected around a few isolated white dwarfs, none have yet been found around a binary white dwarf, which means the LISA detections would represent a distinct new exoplanet population.<\/p>\n

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NASA\u2019s infrared-sensitive James Webb Space Telescope, shown in this artist\u2019s concept, will be able to confirm planets detected by gravitational waves in binary white dwarf systems located within a few hundred light-years. <\/div>\n
NASA\u2019s Goddard Space Flight Center Conceptual Image Lab<\/div>\n<\/figcaption><\/div>\n<\/div>\n<\/div>\n

Astronomers estimate that our Milky Way galaxy contains 10 million double white dwarf systems with orbital periods of less than an hour, which generate gravitational waves in the right range for LISA to find. They expect LISA will resolve about 10,000 individual systems, as well as around 100 mixed binaries \u2014 with white dwarfs, neutron stars, or black holes \u2014 orbiting in similar periods.<\/p>\n

\u201cOnce LISA captures its first exoplanet detections, it will be critical for us to validate some of them,\u201d said Mary Anne Limbach, an assistant research scientist at the University of Michigan and a co-author on the confirmation paper. \u201cThese joint detections will allow us to establish that the gravitational signals correspond to genuine planets rather than false positives.\u201d<\/p>\n

The team described a new method for confirming these planets by taking advantage of the Webb telescope\u2019s infrared sensitivity. A planet in a double white dwarf system produces a larger portion of infrared light than what\u2019s expected from the stars themselves. Webb\u2019s instruments can easily detect this infrared excess out to a distance of at least 500 light-years.\u00a0<\/p>\n

Using this technique for a test case system at this distance, the researchers find that Webb could detect an exoplanet about five times Jupiter\u2019s mass, while LISA could detect a sub-Jupiter exoplanet under ideal circumstances.<\/p>\n

The LISA observatory will consist of a trio of spacecraft following Earth as it orbits the Sun. They will form a vast triangular array stretching 1.6 million miles (2.5 million kilometers) on each side. Each spacecraft will include two telescopes that will use infrared laser beams to simultaneously transmit and receive signals between adjacent spacecraft. Through these telescopes, the spacecraft will measure miniscule changes \u2014 smaller than the width of a helium atom \u2014 in their relative distances, the signals of passing gravitational waves. \u00a0<\/p>\n

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\"Artist\u2019s<\/a><\/figure>
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This artist\u2019s concept shows the LISA mission at work. Telescopes aboard each of the three spacecraft simultaneously transmit and receive infrared laser beams, measuring their mutual distances to extremely high precision across 1.6 million miles (2.5 million kilometers).<\/div>\n
ESA<\/div>\n<\/figcaption><\/div>\n<\/div>\n<\/div>\n

Gravitational waves were predicted by Albert Einstein\u2019s 1916 general theory of relativity and\u00a0first detected by ground-based observatories in 2015<\/a>. The waves form whenever massive objects accelerate, such as two stars in orbit around each other. They travel through space-time, moving at the speed of light, and are unaffected by objects they encounter along the way. These properties make them a valuable tool for probing the cosmos.<\/p>\n

Additional NASA contributions\u00a0to the mission include the laser system, devices to manage the buildup of electric charge on the proof masses, data analysis for identifying and characterizing individual gravitational wave sources, and additional scientific and engineering expertise.<\/p>\n

To learn more about the LISA mission, visit:<\/p>\n

https:\/\/nasa.gov\/lisa<\/strong><\/a><\/p>\n

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href=\"https:\/\/science.nasa.gov\/mission\/lisa\" rel=\"noopener\">LISA (Laser Interferometer Space Antenna)<\/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:\/\/science.nasa.gov\/exoplanets\/\" rel=\"noopener\">Exoplanets<\/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\/category\/science-research\/astrophysics\/gravitational-waves\/\" rel=\"noopener\">Gravitational Waves<\/a><\/li>\n<li class=\"article-tag\"><a href=\"https:\/\/science.nasa.gov\/category\/science-research\/astrophysics\/electromagnetic-spectrum\/infrared-light\/\" rel=\"noopener\">Infrared Light<\/a><\/li>\n<li class=\"article-tag\"><a href=\"https:\/\/science.nasa.gov\/mission\/webb\" rel=\"noopener\">James Webb Space Telescope (JWST)<\/a><\/li>\n<li class=\"article-tag\"><a href=\"https:\/\/science.nasa.gov\/universe\/\" rel=\"noopener\">The Universe<\/a><\/li>\n<li class=\"article-tag\"><a href=\"https:\/\/science.nasa.gov\/category\/universe\/stars\/white-dwarfs\/\" rel=\"noopener\">White Dwarfs<\/a><\/li>\n<\/ul>\n<\/div>\n<\/div>\n<\/div>\n<\/section>\n<\/div>\n<div class=\"nasa-gb-align-full width-full maxw-full padding-x-3 padding-y-0 hds-module hds-module-full alignfull wp-block-nasa-blocks-related-articles\">\n<section class=\"hds-related-articles padding-x-0 padding-y-3 desktop:padding-top-7 desktop:padding-bottom-9\">\n<div class=\"w-100 grid-row grid-container maxw-widescreen padding-0 text-align-left\">\n<div class=\"margin-bottom-4\">\n<h2 class=\"width-full w-full maxw-full\">Explore More<\/h2>\n<\/div>\n<\/div>\n<div class=\"grid-row grid-container maxw-widescreen padding-0\">\n<div class=\"grid-col-12 desktop:grid-col-4 margin-bottom-4 desktop:margin-bottom-0 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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>Missions<\/span><\/p>\n<\/div>\n<\/div>\n<figure class=\"hds-media-background \"><img decoding=\"async\" loading=\"lazy\" width=\"1536\" sizes=\"auto, (max-width: 1536px) 100vw, 1536px\" srcset=\"https:\/\/science.nasa.gov\/wp-content\/plugins\/nasa-blocks\/assets\/images\/topic-cards\/topic-card-sample-1.jpg 1536w\" height=\"1536\" data-no-id=\"true\" alt=\"\" src=\"https:\/\/science.nasa.gov\/wp-content\/plugins\/nasa-blocks\/assets\/images\/topic-cards\/topic-card-sample-1.jpg\"><\/figure>\n<\/div>\n<p><\/a><br \/>\n\t\t\t\t\t<a href=\"https:\/\/science.nasa.gov\/missions\/lisa\/gravitational-waves-can-reveal-new-worlds\/#\" class=\"mobile:grid-col-12 tablet:grid-col-6 desktop:grid-col-3 topic-card margin-bottom-4 desktop:margin-bottom-0\"><\/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>Humans in Space<\/span><\/p>\n<\/div>\n<\/div>\n<figure class=\"hds-media-background \"><img decoding=\"async\" loading=\"lazy\" width=\"1536\" sizes=\"auto, (max-width: 1536px) 100vw, 1536px\" srcset=\"https:\/\/science.nasa.gov\/wp-content\/plugins\/nasa-blocks\/assets\/images\/topic-cards\/topic-card-sample-2.jpg 1536w\" height=\"1536\" data-no-id=\"true\" alt=\"\" src=\"https:\/\/science.nasa.gov\/wp-content\/plugins\/nasa-blocks\/assets\/images\/topic-cards\/topic-card-sample-2.jpg\"><\/figure>\n<\/div>\n<p><\/a><br \/>\n\t\t\t\t\t<a href=\"https:\/\/science.nasa.gov\/missions\/lisa\/gravitational-waves-can-reveal-new-worlds\/#\" class=\"mobile:grid-col-12 tablet:grid-col-6 desktop:grid-col-3 topic-card margin-bottom-4 desktop:margin-bottom-0\"><\/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>Climate Change<\/span><\/p>\n<\/div>\n<\/div>\n<figure class=\"hds-media-background \"><img decoding=\"async\" loading=\"lazy\" width=\"1536\" sizes=\"auto, (max-width: 1536px) 100vw, 1536px\" srcset=\"https:\/\/science.nasa.gov\/wp-content\/plugins\/nasa-blocks\/assets\/images\/topic-cards\/topic-card-sample-3.jpg 1536w\" height=\"1536\" data-no-id=\"true\" alt=\"\" src=\"https:\/\/science.nasa.gov\/wp-content\/plugins\/nasa-blocks\/assets\/images\/topic-cards\/topic-card-sample-3.jpg\"><\/figure>\n<\/div>\n<p><\/a><br \/>\n\t\t\t\t\t<a href=\"https:\/\/science.nasa.gov\/missions\/lisa\/gravitational-waves-can-reveal-new-worlds\/#\" class=\"mobile:grid-col-12 tablet:grid-col-6 desktop:grid-col-3 topic-card margin-bottom-4 desktop:margin-bottom-0\"><\/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>Solar System<\/span><\/p>\n<\/div>\n<\/div>\n<figure class=\"hds-media-background \"><img decoding=\"async\" loading=\"lazy\" width=\"1536\" sizes=\"auto, (max-width: 1536px) 100vw, 1536px\" srcset=\"https:\/\/science.nasa.gov\/wp-content\/plugins\/nasa-blocks\/assets\/images\/topic-cards\/topic-card-sample-4.jpg 1536w\" height=\"1536\" data-no-id=\"true\" alt=\"\" src=\"https:\/\/science.nasa.gov\/wp-content\/plugins\/nasa-blocks\/assets\/images\/topic-cards\/topic-card-sample-4.jpg\"><\/figure>\n<\/div>\n<p><\/a>\n\t\t\t\t<\/div>\n<\/div>\n<\/div>\n<p class=\"wp-block-paragraph\">\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\/lisa\/gravitational-waves-can-reveal-new-worlds\/\" target=\"_blank\" rel=\"noopener\">Get The Details…<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>The LISA (Laser Interferometer Space Antenna) observatory, now in development, will detect gravitational waves, the tiny ripples in space-time caused by orbiting masses. 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