{ "id": 11019, "url": "https://svs.gsfc.nasa.gov/11019/", "page_type": "Produced Video", "title": "Hubble, Swift Detect First-ever Changes in an Exoplanet Atmosphere", "description": "An international team of astronomers using data from NASA's Hubble Space Telescope has detected significant changes in the atmosphere of a planet located beyond our solar system. The scientists conclude the atmospheric variations occurred in response to a powerful eruption on the planet's host star, an event observed by NASA's Swift satellite.The exoplanet is HD 189733b, a gas giant similar to Jupiter, but about 14 percent larger and more massive. The planet circles its star at a distance of only 3 million miles, or about 30 times closer than Earth's distance from the sun, and completes an orbit every 2.2 days. Its star, named HD 189733A, is about 80 percent the size and mass of our sun.Astronomers classify the planet as a \"hot Jupiter.\" Previous Hubble observations show that the planet's deep atmosphere reaches a temperature of about 1,900 degrees Fahrenheit (1,030 C).HD 189733b periodically passes across, or transits, its parent star, and these events give astronomers an opportunity to probe its atmosphere and environment. In a previous study, a group led by Lecavelier des Etangs used Hubble to show that hydrogen gas was escaping from the planet's upper atmosphere. The finding made HD 189733b only the second-known \"evaporating\" exoplanet at the time.The system is just 63 light-years away, so close that its star can be seen with binoculars near the famous Dumbbell Nebula. This makes HD 189733b an ideal target for studying the processes that drive atmospheric escape.When HD 189733b transits its star, some of the star's light passes through the planet's atmosphere. This interaction imprints information on the composition and motion of the planet's atmosphere into the star's light.In April 2010, the researchers observed a single transit using Hubble's Space Telescope Imaging Spectrograph (STIS), but they detected no trace of the planet's atmosphere. Follow-up STIS observations in September 2011 showed a surprising reversal, with striking evidence that a plume of gas was streaming away from the exoplanet.The researchers determined that at least 1,000 tons of gas was leaving the planet's atmosphere every second. The hydrogen atoms were racing away at speeds greater than 300,000 mph. Because X-rays and extreme ultraviolet starlight heat the planet's atmosphere and likely drive its escape, the team also monitored the star with Swift's X-ray Telescope (XRT). On Sept. 7, 2011, just eight hours before Hubble was scheduled to observe the transit, Swift was monitoring the star when it unleashed a powerful flare. It brightened by 3.6 times in X-rays, a spike occurring atop emission levels that already were greater than the sun's. Astronomers estimate that HD 189733b encountered about 3 million times as many X-rays as Earth receives from a solar flare at the threshold of the X class. || ", "release_date": "2012-06-28T09:00:00-04:00", "update_date": "2023-05-03T13:52:58.908137-04:00", "main_image": { "id": 475033, "url": "https://svs.gsfc.nasa.gov/vis/a010000/a011000/a011019/Evaporating_Exoplanet_Beauty_Still.jpg", "filename": "Evaporating_Exoplanet_Beauty_Still.jpg", "media_type": "Image", "alt_text": "This artist's rendering illustrates the evaporation of HD 189733b's atmosphere in response to a powerful eruption from its host star. NASA's Hubble Space Telescope detected the escaping gases and NASA's Swift satellite caught the stellar flare.", "width": 1920, "height": 1080, "pixels": 2073600 }, "main_video": null, "main_credits": { "Visualizations by": [ { "name": "Michael Lentz", "employer": "USRA" } ] }, "progress": "Complete", "media_groups": [ { "id": 348891, "url": "https://svs.gsfc.nasa.gov/11019/#media_group_348891", "widget": "Basic text with HTML", "title": "", "caption": "", "description": "An international team of astronomers using data from NASA's Hubble Space Telescope has detected significant changes in the atmosphere of a planet located beyond our solar system. The scientists conclude the atmospheric variations occurred in response to a powerful eruption on the planet's host star, an event observed by NASA's Swift satellite.

The exoplanet is HD 189733b, a gas giant similar to Jupiter, but about 14 percent larger and more massive. The planet circles its star at a distance of only 3 million miles, or about 30 times closer than Earth's distance from the sun, and completes an orbit every 2.2 days. Its star, named HD 189733A, is about 80 percent the size and mass of our sun.

Astronomers classify the planet as a \"hot Jupiter.\" Previous Hubble observations show that the planet's deep atmosphere reaches a temperature of about 1,900 degrees Fahrenheit (1,030 C).

HD 189733b periodically passes across, or transits, its parent star, and these events give astronomers an opportunity to probe its atmosphere and environment. In a previous study, a group led by Lecavelier des Etangs used Hubble to show that hydrogen gas was escaping from the planet's upper atmosphere. The finding made HD 189733b only the second-known \"evaporating\" exoplanet at the time.

The system is just 63 light-years away, so close that its star can be seen with binoculars near the famous Dumbbell Nebula. This makes HD 189733b an ideal target for studying the processes that drive atmospheric escape.

When HD 189733b transits its star, some of the star's light passes through the planet's atmosphere. This interaction imprints information on the composition and motion of the planet's atmosphere into the star's light.

In April 2010, the researchers observed a single transit using Hubble's Space Telescope Imaging Spectrograph (STIS), but they detected no trace of the planet's atmosphere. Follow-up STIS observations in September 2011 showed a surprising reversal, with striking evidence that a plume of gas was streaming away from the exoplanet.

The researchers determined that at least 1,000 tons of gas was leaving the planet's atmosphere every second. The hydrogen atoms were racing away at speeds greater than 300,000 mph.

Because X-rays and extreme ultraviolet starlight heat the planet's atmosphere and likely drive its escape, the team also monitored the star with Swift's X-ray Telescope (XRT). On Sept. 7, 2011, just eight hours before Hubble was scheduled to observe the transit, Swift was monitoring the star when it unleashed a powerful flare. It brightened by 3.6 times in X-rays, a spike occurring atop emission levels that already were greater than the sun's. Astronomers estimate that HD 189733b encountered about 3 million times as many X-rays as Earth receives from a solar flare at the threshold of the X class.", "items": [], "extra_data": {} }, { "id": 348892, "url": "https://svs.gsfc.nasa.gov/11019/#media_group_348892", "widget": "Video player", "title": "", "caption": "", "description": "Short narrated video

For complete transcript, click here.", "items": [ { "id": 319763, "type": "media", "extra_data": null, "title": null, "caption": null, "instance": { "id": 475018, "url": "https://svs.gsfc.nasa.gov/vis/a010000/a011000/a011019/Video_Still.jpg", "filename": "Video_Still.jpg", "media_type": "Image", "alt_text": "Short narrated videoFor complete transcript, click here.", "width": 1280, "height": 720, "pixels": 921600 } }, { "id": 319764, "type": "media", "extra_data": null, "title": null, "caption": null, "instance": { "id": 475019, "url": "https://svs.gsfc.nasa.gov/vis/a010000/a011000/a011019/Video_Still_web.png", "filename": "Video_Still_web.png", "media_type": "Image", "alt_text": "Short narrated videoFor complete transcript, click here.", "width": 320, "height": 180, "pixels": 57600 } }, { "id": 319752, "type": "media", "extra_data": null, "title": null, "caption": null, "instance": { "id": 475026, "url": "https://svs.gsfc.nasa.gov/vis/a010000/a011000/a011019/11019_Evaporating_Exoplanet_ProRes_1280x720_59.94.mov", "filename": "11019_Evaporating_Exoplanet_ProRes_1280x720_59.94.mov", "media_type": "Movie", "alt_text": "Short narrated videoFor complete transcript, click here.", "width": 1280, "height": 720, "pixels": 921600 } }, { "id": 319753, "type": "media", "extra_data": null, "title": null, "caption": null, "instance": { "id": 475023, "url": "https://svs.gsfc.nasa.gov/vis/a010000/a011000/a011019/11019_Evaporating_Exoplanet_H264_Best_1280x720_59.94.mov", "filename": "11019_Evaporating_Exoplanet_H264_Best_1280x720_59.94.mov", "media_type": "Movie", "alt_text": "Short narrated videoFor complete transcript, click here.", "width": 1280, "height": 720, "pixels": 921600 } }, { "id": 319754, "type": "media", "extra_data": null, "title": null, "caption": null, "instance": { "id": 475024, "url": "https://svs.gsfc.nasa.gov/vis/a010000/a011000/a011019/11019_Evaporating_Exoplanet_H264_Good_1280x720_29.97.mov", "filename": "11019_Evaporating_Exoplanet_H264_Good_1280x720_29.97.mov", "media_type": "Movie", "alt_text": "Short narrated videoFor complete transcript, click here.", "width": 1280, "height": 720, "pixels": 921600 } }, { "id": 319755, "type": "media", "extra_data": null, "title": null, "caption": null, "instance": { "id": 475029, "url": "https://svs.gsfc.nasa.gov/vis/a010000/a011000/a011019/G2012-067_Evaporating_Exoplanet_FINAL_youtube_hq.mov", "filename": "G2012-067_Evaporating_Exoplanet_FINAL_youtube_hq.mov", "media_type": "Movie", "alt_text": "Short narrated videoFor complete transcript, click here.", "width": 1280, "height": 720, "pixels": 921600 } }, { "id": 319756, "type": "media", "extra_data": null, "title": null, "caption": null, "instance": { "id": 475020, "url": "https://svs.gsfc.nasa.gov/vis/a010000/a011000/a011019/11019_Evaporating_Exoplanet_H264_1280x720_30.mov", "filename": "11019_Evaporating_Exoplanet_H264_1280x720_30.mov", "media_type": "Movie", "alt_text": "Short narrated videoFor complete transcript, click here.", "width": 1280, "height": 720, "pixels": 921600 } }, { "id": 319757, "type": "media", "extra_data": null, "title": null, "caption": null, "instance": { "id": 475025, "url": "https://svs.gsfc.nasa.gov/vis/a010000/a011000/a011019/11019_Evaporating_Exoplanet_MPEG4_1280X720_29.97.mp4", "filename": "11019_Evaporating_Exoplanet_MPEG4_1280X720_29.97.mp4", "media_type": "Movie", "alt_text": "Short narrated videoFor complete transcript, click here.", "width": 1280, "height": 720, "pixels": 921600 } }, { "id": 319758, "type": "media", "extra_data": null, "title": null, "caption": null, "instance": { "id": 475028, "url": "https://svs.gsfc.nasa.gov/vis/a010000/a011000/a011019/G2012-067_Evaporating_Exoplanet_FINAL_appletv.m4v", "filename": "G2012-067_Evaporating_Exoplanet_FINAL_appletv.m4v", "media_type": "Movie", "alt_text": "Short narrated videoFor complete transcript, click here.", "width": 960, "height": 540, "pixels": 518400 } }, { "id": 319759, "type": "media", "extra_data": null, "title": null, "caption": null, "instance": { "id": 475027, "url": "https://svs.gsfc.nasa.gov/vis/a010000/a011000/a011019/G2012-067_Evaporating_Exoplanet_FINAL.wmv", "filename": "G2012-067_Evaporating_Exoplanet_FINAL.wmv", "media_type": "Movie", "alt_text": "Short narrated videoFor complete transcript, click here.", "width": 1280, "height": 720, "pixels": 921600 } }, { "id": 319765, "type": "media", "extra_data": null, "title": null, "caption": null, "instance": { "id": 475031, "url": "https://svs.gsfc.nasa.gov/vis/a010000/a011000/a011019/G2012-067_Evaporating_Exoplanet_FINAL_appletv.webmhd.webm", "filename": "G2012-067_Evaporating_Exoplanet_FINAL_appletv.webmhd.webm", "media_type": "Movie", "alt_text": "Short narrated videoFor complete 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"extra_data": null, "title": null, "caption": null, "instance": { "id": 475021, "url": "https://svs.gsfc.nasa.gov/vis/a010000/a011000/a011019/11019_Evaporating_Exoplanet_H264_320x180_29.97_iPhone.m4v", "filename": "11019_Evaporating_Exoplanet_H264_320x180_29.97_iPhone.m4v", "media_type": "Movie", "alt_text": "Short narrated videoFor complete transcript, click here.", "width": 320, "height": 180, "pixels": 57600 } } ], "extra_data": {} }, { "id": 348893, "url": "https://svs.gsfc.nasa.gov/11019/#media_group_348893", "widget": "Single image", "title": "", "caption": "", "description": "This artist's rendering illustrates the evaporation of HD 189733b's atmosphere in response to a powerful eruption from its host star. NASA's Hubble Space Telescope detected the escaping gases and NASA's Swift satellite caught the stellar flare.", "items": [ { "id": 319769, "type": "media", "extra_data": null, "title": null, "caption": null, "instance": { "id": 475033, "url": "https://svs.gsfc.nasa.gov/vis/a010000/a011000/a011019/Evaporating_Exoplanet_Beauty_Still.jpg", "filename": "Evaporating_Exoplanet_Beauty_Still.jpg", "media_type": "Image", "alt_text": "This artist's rendering illustrates the evaporation of HD 189733b's atmosphere in response to a powerful eruption from its host star. NASA's Hubble Space Telescope detected the escaping gases and NASA's Swift satellite caught the stellar flare.", "width": 1920, "height": 1080, "pixels": 2073600 } }, { "id": 319767, "type": "media", "extra_data": null, "title": null, "caption": null, "instance": { "id": 475036, "url": "https://svs.gsfc.nasa.gov/vis/a010000/a011000/a011019/Evaporating_Exoplanet_beauty_large.jpg", "filename": "Evaporating_Exoplanet_beauty_large.jpg", "media_type": "Image", "alt_text": "This artist's rendering illustrates the evaporation of HD 189733b's atmosphere in response to a powerful eruption from its host star. NASA's Hubble Space Telescope detected the escaping gases and NASA's Swift satellite caught the stellar flare.", "width": 7000, "height": 3938, "pixels": 27566000 } }, { "id": 319770, "type": "media", "extra_data": null, "title": null, "caption": null, "instance": { "id": 475034, "url": "https://svs.gsfc.nasa.gov/vis/a010000/a011000/a011019/Evaporating_Exoplanet_Beauty_Still_web.jpg", "filename": "Evaporating_Exoplanet_Beauty_Still_web.jpg", "media_type": "Image", "alt_text": "This artist's rendering illustrates the evaporation of HD 189733b's atmosphere in response to a powerful eruption from its host star. NASA's Hubble Space Telescope detected the escaping gases and NASA's Swift satellite caught the stellar flare.", "width": 320, "height": 180, "pixels": 57600 } }, { "id": 319771, "type": "media", "extra_data": null, "title": null, "caption": null, "instance": { "id": 475035, "url": "https://svs.gsfc.nasa.gov/vis/a010000/a011000/a011019/Evaporating_Exoplanet_Beauty_Still_thm.png", "filename": "Evaporating_Exoplanet_Beauty_Still_thm.png", "media_type": "Image", "alt_text": "This artist's rendering illustrates the evaporation of HD 189733b's atmosphere in response to a powerful eruption from its host star. NASA's Hubble Space Telescope detected the escaping gases and NASA's Swift satellite caught the stellar flare.", "width": 80, "height": 40, "pixels": 3200 } }, { "id": 319768, "type": "media", "extra_data": null, "title": null, "caption": null, "instance": { "id": 475032, "url": "https://svs.gsfc.nasa.gov/vis/a010000/a011000/a011019/Evaporating_Exoplanet_Beauty_Still.tif", "filename": "Evaporating_Exoplanet_Beauty_Still.tif", "media_type": "Image", "alt_text": "This artist's rendering illustrates the evaporation of HD 189733b's atmosphere in response to a powerful eruption from its host star. NASA's Hubble Space Telescope detected the escaping gases and NASA's Swift satellite caught the stellar flare.", "width": 1920, "height": 1080, "pixels": 2073600 } }, { "id": 319766, "type": "media", "extra_data": null, "title": null, "caption": null, "instance": { "id": 475037, "url": "https://svs.gsfc.nasa.gov/vis/a010000/a011000/a011019/Evaporating_Exoplanet_beauty_large.tif", "filename": "Evaporating_Exoplanet_beauty_large.tif", "media_type": "Image", "alt_text": "This artist's rendering illustrates the evaporation of HD 189733b's atmosphere in response to a powerful eruption from its host star. 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Credit: NASA/Swift/Stefan Immler", "items": [ { "id": 319774, "type": "media", "extra_data": null, "title": null, "caption": null, "instance": { "id": 475040, "url": "https://svs.gsfc.nasa.gov/vis/a010000/a011000/a011019/HD189733_UVOT_2011-09-14.jpg", "filename": "HD189733_UVOT_2011-09-14.jpg", "media_type": "Image", "alt_text": "Swift's Ultraviolet/Optical Telescope captured this view of HD 189733b's host star on Sept. 14, 2011. The image is 6 arcminutes across. Credit: NASA/Swift/Stefan Immler", "width": 1128, "height": 1125, "pixels": 1269000 } }, { "id": 319773, "type": "media", "extra_data": null, "title": null, "caption": null, "instance": { "id": 475039, "url": "https://svs.gsfc.nasa.gov/vis/a010000/a011000/a011019/HD189733_UVOT_2011-09-14_web.jpg", "filename": "HD189733_UVOT_2011-09-14_web.jpg", "media_type": "Image", "alt_text": "Swift's Ultraviolet/Optical Telescope captured this view of HD 189733b's host star on Sept. 14, 2011. The image is 6 arcminutes across. Credit: NASA/Swift/Stefan Immler", "width": 320, "height": 319, "pixels": 102080 } }, { "id": 319772, "type": "media", "extra_data": null, "title": null, "caption": null, "instance": { "id": 475038, "url": "https://svs.gsfc.nasa.gov/vis/a010000/a011000/a011019/HD189733_UVOT_2011-09-14.tiff", "filename": "HD189733_UVOT_2011-09-14.tiff", "media_type": "Image", "alt_text": "Swift's Ultraviolet/Optical Telescope captured this view of HD 189733b's host star on Sept. 14, 2011. The image is 6 arcminutes across. Credit: NASA/Swift/Stefan Immler", "width": 1128, "height": 1125, "pixels": 1269000 } } ], "extra_data": {} }, { "id": 348895, "url": "https://svs.gsfc.nasa.gov/11019/#media_group_348895", "widget": "Single image", "title": "", "caption": "", "description": "Strong X-ray emission makes the host star of HD 189733b stand out in this view from Swift's X-Ray Telescope. The image combines data from Sept. 13 and 14, 2011, and is 6 arcminutes across.

Credit: NASA/Swift/Stefan Immler", "items": [ { "id": 319777, "type": "media", "extra_data": null, "title": null, "caption": null, "instance": { "id": 475043, "url": "https://svs.gsfc.nasa.gov/vis/a010000/a011000/a011019/HD189733_XRT_2011-09-14.jpg", "filename": "HD189733_XRT_2011-09-14.jpg", "media_type": "Image", "alt_text": "Strong X-ray emission makes the host star of HD 189733b stand out in this view from Swift's X-Ray Telescope. The image combines data from Sept. 13 and 14, 2011, and is 6 arcminutes across. Credit: NASA/Swift/Stefan Immler", "width": 1128, "height": 1125, "pixels": 1269000 } }, { "id": 319776, "type": "media", "extra_data": null, "title": null, "caption": null, "instance": { "id": 475042, "url": "https://svs.gsfc.nasa.gov/vis/a010000/a011000/a011019/HD189733_XRT_2011-09-14_web.jpg", "filename": "HD189733_XRT_2011-09-14_web.jpg", "media_type": "Image", "alt_text": "Strong X-ray emission makes the host star of HD 189733b stand out in this view from Swift's X-Ray Telescope. The image combines data from Sept. 13 and 14, 2011, and is 6 arcminutes across. Credit: NASA/Swift/Stefan Immler", "width": 320, "height": 319, "pixels": 102080 } }, { "id": 319775, "type": "media", "extra_data": null, "title": null, "caption": null, "instance": { "id": 475041, "url": "https://svs.gsfc.nasa.gov/vis/a010000/a011000/a011019/HD189733_XRT_2011-09-14.tiff", "filename": "HD189733_XRT_2011-09-14.tiff", "media_type": "Image", "alt_text": "Strong X-ray emission makes the host star of HD 189733b stand out in this view from Swift's X-Ray Telescope. The image combines data from Sept. 13 and 14, 2011, and is 6 arcminutes across. 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A stratosphere occurs when molecules in the atmosphere absorb ultraviolet and visible light from the star. This absorption warms the stratosphere and acts as a kind of sunscreen layer for the planet below.Watch this video on YouTube. || CoolHotAll3av8_print.jpg (1024x576) [49.2 KB] || CoolHotAll3av8_searchweb.png (320x180) [48.2 KB] || CoolHotAll3av8_thm.png (80x40) [4.6 KB] || CoolHotAll3av8.mp4 (1920x1080) [46.7 MB] || CoolHotAll3av8sm.mp4 (1280x720) [16.4 MB] || CoolHotAll3av8sm.webm (1280x720) [2.2 MB] || ", "release_date": "2015-06-12T12:30:00-04:00", "update_date": "2023-05-03T13:49:40.568523-04:00", "main_image": { "id": 442740, "url": "https://svs.gsfc.nasa.gov/vis/a010000/a011800/a011898/CoolHotAll3av8_print.jpg", "filename": "CoolHotAll3av8_print.jpg", "media_type": "Image", "alt_text": "ANIMATION Using NASA’s Hubble Telescope, scientists detected a stratosphere on the planet WASP-33b. A stratosphere occurs when molecules in the atmosphere absorb ultraviolet and visible light from the star. This absorption warms the stratosphere and acts as a kind of sunscreen layer for the planet below.Watch this video on YouTube.", "width": 1024, "height": 576, "pixels": 589824 } }, { "id": 11686, "url": "https://svs.gsfc.nasa.gov/11686/", "page_type": "Produced Video", "title": "Eroding Exoplanet", "description": "Planet HD 189733b orbits a star about 63 light-years away. The world is a gas giant similar to Jupiter, but about 14 percent larger and more massive. In 2010, researchers using NASA’s Hubble Space Telescope watched HD 189733b as it moved in front of its host star. Sixteen months later they looked again, but this time something was different—at least 1,000 tons of gas were leaving the planet's atmosphere every second. The question was: Why? Just hours earlier, NASA’s Swift satellite saw the planet's star unleash a powerful eruption known as a stellar flare. Because the planet is so big and orbits its star in close proximity, the blast had an outsized effect, sending streams of atoms racing away from its atmosphere at speeds greater than 300,000 mph. Watch the video to learn more. || ", "release_date": "2014-11-27T11:00:00-05:00", "update_date": "2023-05-03T13:50:16.225740-04:00", "main_image": { "id": 448536, "url": "https://svs.gsfc.nasa.gov/vis/a010000/a011600/a011686/c-1024_print.jpg", "filename": "c-1024_print.jpg", "media_type": "Image", "alt_text": "A planet’s atmosphere is blasted away by a stellar flare.", "width": 1024, "height": 576, "pixels": 589824 } }, { "id": 11428, "url": "https://svs.gsfc.nasa.gov/11428/", "page_type": "Produced Video", "title": "Alien Atmospheres", "description": "Since the early 1990's, astronomers have known that extrasolar planets, or \"exoplanets,\" orbit stars light-years beyond our own solar system. Although most exoplanets are too distant to be directly imaged, detailed studies have been made of their size, composition, and even atmospheric makeup - but how? By observing periodic variations in the parent star's brightness and color, astronomers can indirectly determine an exoplanet's distance from its star, its size, and its mass. But to truly understand an exoplanet astronomers must study its atmosphere, and they do so by splitting apart the parent star's light during a planetary transit. || ", "release_date": "2013-12-03T12:00:00-05:00", "update_date": "2024-10-10T00:16:13.966689-04:00", "main_image": { "id": 460346, "url": "https://svs.gsfc.nasa.gov/vis/a010000/a011400/a011428/Exoplanet_limb.jpg", "filename": "Exoplanet_limb.jpg", "media_type": "Image", "alt_text": "Alien Atmospheres Although most of the planets outside of our solar system (called \"exoplanets\") are too distant to be seen, astronomers have developed indirect methods to determine their size, mass, and even their atmospheric makeup - taking us one step closer to finding a world like our own.Watch this video on the NASAexplorer YouTube channelFor complete transcript, click here.", "width": 1280, "height": 720, "pixels": 921600 } }, { "id": 11026, "url": "https://svs.gsfc.nasa.gov/11026/", "page_type": "Produced Video", "title": "HD 189733b Exoplanet Animation", "description": "The exoplanet HD 189733b lies so near its star that it completes an orbit every 2.2 days. In late 2011, NASA's Hubble Space Telescope found that the planet's upper atmosphere was streaming away at speeds exceeding 300,000 mph. Just before the Hubble observation, NASA's Swift detected the star blasting out a strong X-ray flare, one powerful enough to blow away part of the planet's atmosphere. || ", "release_date": "2012-06-28T09:00:00-04:00", "update_date": "2023-11-02T10:08:01.628282-04:00", "main_image": { "id": 474881, "url": "https://svs.gsfc.nasa.gov/vis/a010000/a011000/a011026/Exo_Animation_Still.jpg", "filename": "Exo_Animation_Still.jpg", "media_type": "Image", "alt_text": "Artist's interpretation of what the exoplanet, flare, and atmosphere loss might have looked like.", "width": 1920, "height": 1080, "pixels": 2073600 } } ], "sources": [], "products": [], "newer_versions": [], "older_versions": [], "alternate_versions": [] }