{ "id": 14877, "url": "https://svs.gsfc.nasa.gov/14877/", "page_type": "Produced Video", "title": "Hubble Uncovers Star’s Unusual Atmosphere", "description": "Astronomers using NASA’s Hubble Space Telescope have found a rare ultra massive white dwarf formed from a stellar merger. The discovery was made possible by Hubble’s sensitive ultraviolet observations and suggests these unusual white dwarfs may be more common than once thought.The white dwarf is 128 light-years away and 20 percent more massive than the Sun. In visible light it looked like a typical white dwarf, but Hubble’s ultraviolet data revealed something unusual…For more information, visit science.nasa.gov/mission/hubbleCredit: NASA's Goddard Space Flight Center Paul Morris: Lead ProducerMusic Credit:\"Zero Gravity\" Brice Davoli [SACEM] via Koka Media [SACEM], Universal Production Music France [SACEM] and Universal Production Music || ", "release_date": "2025-08-13T09:55:00-04:00", "update_date": "2026-02-25T20:32:55.534022-05:00", "main_image": { "id": 1157695, "url": "https://svs.gsfc.nasa.gov/vis/a010000/a014800/a014877/14877_WHITE_WIDE_PRINT.jpg", "filename": "14877_WHITE_WIDE_PRINT.jpg", "media_type": "Image", "alt_text": "Master VersionHorizontal version. This is for use on any YouTube or non-YouTube platform where you want to display the video horizontally.", "width": 1920, "height": 1080, "pixels": 2073600 }, "main_video": null, "main_credits": { "Produced by": [ { "name": "Paul Morris", "employer": "eMITS" } ] }, "progress": "Complete", "media_groups": [ { "id": 378669, "url": "https://svs.gsfc.nasa.gov/14877/#media_group_378669", "widget": "Basic text with HTML", "title": "", "caption": "", "description": "Astronomers using NASA’s Hubble Space Telescope have found a rare ultra massive white dwarf formed from a stellar merger.

The discovery was made possible by Hubble’s sensitive ultraviolet observations and suggests these unusual white dwarfs may be more common than once thought.

The white dwarf is 128 light-years away and 20 percent more massive than the Sun. In visible light it looked like a typical white dwarf, but Hubble’s ultraviolet data revealed something unusual…


For more information, visit science.nasa.gov/mission/hubble

Credit: NASA's Goddard Space Flight Center
Paul Morris: Lead Producer

Music Credit:
\"Zero Gravity\" Brice Davoli [SACEM] via Koka Media [SACEM], Universal Production Music France [SACEM] and Universal Production Music
", "items": [], "extra_data": {} }, { "id": 378725, "url": "https://svs.gsfc.nasa.gov/14877/#media_group_378725", "widget": "Video player", "title": "", "caption": "", "description": "Master Version

Horizontal version. This is for use on any YouTube or non-YouTube platform where you want to display the video horizontally.", "items": [ { "id": 490537, "type": "media", "extra_data": null, "title": null, "caption": null, "instance": { "id": 1157695, "url": "https://svs.gsfc.nasa.gov/vis/a010000/a014800/a014877/14877_WHITE_WIDE_PRINT.jpg", "filename": "14877_WHITE_WIDE_PRINT.jpg", "media_type": "Image", "alt_text": "Master VersionHorizontal version. This is for use on any YouTube or non-YouTube platform where you want to display the video horizontally.", "width": 1920, "height": 1080, "pixels": 2073600 } }, { "id": 490539, "type": "media", "extra_data": null, "title": null, "caption": null, "instance": { "id": 1157697, "url": "https://svs.gsfc.nasa.gov/vis/a010000/a014800/a014877/14877_WHITE_WIDE_THUMB.jpg", "filename": "14877_WHITE_WIDE_THUMB.jpg", "media_type": "Image", "alt_text": "Master VersionHorizontal version. This is for use on any YouTube or non-YouTube platform where you want to display the video horizontally.", "width": 1920, "height": 1080, "pixels": 2073600 } }, { "id": 490538, "type": "media", "extra_data": null, "title": null, "caption": null, "instance": { "id": 1157696, "url": "https://svs.gsfc.nasa.gov/vis/a010000/a014800/a014877/14877_WHITE_WIDE_SEARCH.jpg", "filename": "14877_WHITE_WIDE_SEARCH.jpg", "media_type": "Image", "alt_text": "Master VersionHorizontal version. This is for use on any YouTube or non-YouTube platform where you want to display the video horizontally.", "width": 320, "height": 180, "pixels": 57600 } }, { "id": 490536, "type": "media", "extra_data": null, "title": null, "caption": null, "instance": { "id": 1157694, "url": "https://svs.gsfc.nasa.gov/vis/a010000/a014800/a014877/14877_WHITE_WIDE_MP4.mp4", "filename": "14877_WHITE_WIDE_MP4.mp4", "media_type": "Movie", "alt_text": "Master VersionHorizontal version. This is for use on any YouTube or non-YouTube platform where you want to display the video horizontally.", "width": 1920, "height": 1080, "pixels": 2073600 } }, { "id": 490534, "type": "media", "extra_data": null, "title": null, "caption": null, "instance": { "id": 1157692, "url": "https://svs.gsfc.nasa.gov/vis/a010000/a014800/a014877/14877_WHITE_WIDE_CAP.en_US.srt", "filename": "14877_WHITE_WIDE_CAP.en_US.srt", "media_type": "Captions", "alt_text": "Master VersionHorizontal version. This is for use on any YouTube or non-YouTube platform where you want to display the video horizontally.", "label": "English", "language_code": "en-US" } }, { "id": 490535, "type": "media", "extra_data": null, "title": null, "caption": null, "instance": { "id": 1157693, "url": "https://svs.gsfc.nasa.gov/vis/a010000/a014800/a014877/14877_WHITE_WIDE_CAP.en_US.vtt", "filename": "14877_WHITE_WIDE_CAP.en_US.vtt", "media_type": "Captions", "alt_text": "Master VersionHorizontal version. This is for use on any YouTube or non-YouTube platform where you want to display the video horizontally.", "label": "English", "language_code": "en-US" } } ], "extra_data": {} }, { "id": 378726, "url": "https://svs.gsfc.nasa.gov/14877/#media_group_378726", "widget": "Video player", "title": "", "caption": "", "description": "Vertical Version

This vertical version of the episode is for IGTV or Snapchat. The IGTV episode can be pulled into Instagram Stories and the regular Instagram feed.", "items": [ { "id": 490543, "type": "media", "extra_data": null, "title": null, "caption": null, "instance": { "id": 1157701, "url": "https://svs.gsfc.nasa.gov/vis/a010000/a014800/a014877/14877_WHITE_VERT_THUMB.jpg", "filename": "14877_WHITE_VERT_THUMB.jpg", "media_type": "Image", "alt_text": "Vertical VersionThis vertical version of the episode is for IGTV or Snapchat. The IGTV episode can be pulled into Instagram Stories and the regular Instagram feed.", "width": 1080, "height": 1920, "pixels": 2073600 } }, { "id": 490542, "type": "media", "extra_data": null, "title": null, "caption": null, "instance": { "id": 1157700, "url": "https://svs.gsfc.nasa.gov/vis/a010000/a014800/a014877/14877_WHITE_VERT_MP4.mp4", "filename": "14877_WHITE_VERT_MP4.mp4", "media_type": "Movie", "alt_text": "Vertical VersionThis vertical version of the episode is for IGTV or Snapchat. The IGTV episode can be pulled into Instagram Stories and the regular Instagram feed.", "width": 1080, "height": 1920, "pixels": 2073600 } }, { "id": 490540, "type": "media", "extra_data": null, "title": null, "caption": null, "instance": { "id": 1157698, "url": "https://svs.gsfc.nasa.gov/vis/a010000/a014800/a014877/14877_WHITE_VERT_CAP.en_US.srt", "filename": "14877_WHITE_VERT_CAP.en_US.srt", "media_type": "Captions", "alt_text": "Vertical VersionThis vertical version of the episode is for IGTV or Snapchat. The IGTV episode can be pulled into Instagram Stories and the regular Instagram feed.", "label": "English", "language_code": "en-US" } }, { "id": 490541, "type": "media", "extra_data": null, "title": null, "caption": null, "instance": { "id": 1157699, "url": "https://svs.gsfc.nasa.gov/vis/a010000/a014800/a014877/14877_WHITE_VERT_CAP.en_US.vtt", "filename": "14877_WHITE_VERT_CAP.en_US.vtt", "media_type": "Captions", "alt_text": "Vertical VersionThis vertical version of the episode is for IGTV or Snapchat. The IGTV episode can be pulled into Instagram Stories and the regular Instagram feed.", "label": "English", "language_code": "en-US" } } ], "extra_data": {} } ], "studio": "gms", "funding_sources": [ "PAO" ], "credits": [ { "role": "Producer", "people": [ { "name": "Paul Morris", "employer": "eMITS" } ] } ], "missions": [ "Hubble" ], "series": [], "tapes": [], "papers": [], "datasets": [], "nasa_science_categories": [ "Universe" ], "keywords": [], "recommended_pages": [], "related": [], "sources": [], "products": [], "newer_versions": [], "older_versions": [], "alternate_versions": [] }