Credit: NASA/Goddard Space Flight Center
Watch this video on the NASAexplorer YouTube channel.
For complete transcript, click here.", "items": [ { "id": 332850, "type": "media", "extra_data": null, "title": null, "caption": null, "instance": { "id": 488426, "url": "https://svs.gsfc.nasa.gov/vis/a010000/a010700/a010708/Chandra_Graph_1280x720.jpg", "filename": "Chandra_Graph_1280x720.jpg", "media_type": "Image", "alt_text": "A short narrated video about the Crab Nebula's variability.Credit: NASA/Goddard Space Flight CenterWatch this video on the NASAexplorer YouTube channel.For complete transcript, click here.", "width": 1280, "height": 720, "pixels": 921600 } }, { "id": 332848, "type": "media", "extra_data": null, "title": null, "caption": null, "instance": { "id": 488424, "url": "https://svs.gsfc.nasa.gov/vis/a010000/a010700/a010708/Chandra_Graph_2560x1440.jpg", "filename": "Chandra_Graph_2560x1440.jpg", "media_type": "Image", "alt_text": "A short narrated video about the Crab Nebula's variability.Credit: NASA/Goddard Space Flight CenterWatch this video on the NASAexplorer 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"media", "extra_data": null, "title": null, "caption": null, "instance": { "id": 488420, "url": "https://svs.gsfc.nasa.gov/vis/a010000/a010700/a010708/10708_Crab_Neb_Var_MPEG4_1280X720_29.97.mp4", "filename": "10708_Crab_Neb_Var_MPEG4_1280X720_29.97.mp4", "media_type": "Movie", "alt_text": "A short narrated video about the Crab Nebula's variability.Credit: NASA/Goddard Space Flight CenterWatch this video on the NASAexplorer YouTube channel.For complete transcript, click here.", "width": 1280, "height": 720, "pixels": 921600 } }, { "id": 332849, "type": "media", "extra_data": null, "title": null, "caption": null, "instance": { "id": 488425, "url": "https://svs.gsfc.nasa.gov/vis/a010000/a010700/a010708/Chandra_Graph_1280x720.tiff", "filename": "Chandra_Graph_1280x720.tiff", "media_type": "Image", "alt_text": "A short narrated video about the Crab Nebula's variability.Credit: NASA/Goddard Space Flight CenterWatch this video on the NASAexplorer YouTube channel.For complete transcript, click here.", "width": 1280, "height": 720, "pixels": 921600 } }, { "id": 332853, "type": "media", "extra_data": null, "title": null, "caption": null, "instance": { "id": 488430, "url": "https://svs.gsfc.nasa.gov/vis/a010000/a010700/a010708/Crab_Nebula_Variability.wmv", "filename": "Crab_Nebula_Variability.wmv", "media_type": "Movie", "alt_text": "A short narrated video about the Crab Nebula's variability.Credit: NASA/Goddard Space Flight CenterWatch this video on the NASAexplorer YouTube channel.For complete transcript, click here.", "width": 1280, "height": 720, "pixels": 921600 } }, { "id": 332854, "type": "media", "extra_data": null, "title": null, "caption": null, "instance": { "id": 488429, "url": "https://svs.gsfc.nasa.gov/vis/a010000/a010700/a010708/Crab_Nebula_Variability_appletv.webmhd.webm", "filename": "Crab_Nebula_Variability_appletv.webmhd.webm", "media_type": "Movie", "alt_text": "A short narrated video about the Crab Nebula's variability.Credit: NASA/Goddard Space 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video about the Crab Nebula's variability.Credit: NASA/Goddard Space Flight CenterWatch this video on the NASAexplorer YouTube channel.For complete transcript, click here.", "width": 2560, "height": 1440, "pixels": 3686400 } }, { "id": 332846, "type": "media", "extra_data": null, "title": null, "caption": null, "instance": { "id": 488422, "url": "https://svs.gsfc.nasa.gov/vis/a010000/a010700/a010708/10708_Crab_Neb_Var_H264_320x180_29.97_iPhone.m4v", "filename": "10708_Crab_Neb_Var_H264_320x180_29.97_iPhone.m4v", "media_type": "Movie", "alt_text": "A short narrated video about the Crab Nebula's variability.Credit: NASA/Goddard Space Flight CenterWatch this video on the NASAexplorer YouTube channel.For complete transcript, click here.", "width": 320, "height": 180, "pixels": 57600 } } ], "extra_data": {} }, { "id": 352308, "url": "https://svs.gsfc.nasa.gov/10708/#media_group_352308", "widget": "Single image", "title": "", "caption": "", "description": "NASA's Chandra X-ray Observatory reveals the complex X-ray-emitting central region of the Crab Nebula. This image is 9.8 light-years across. Chandra observations were not compatible with the study of the nebula's hard X-ray variations.
Credit: NASA/CXC/SAO/F. Seward et al.", "items": [ { "id": 332855, "type": "media", "extra_data": null, "title": null, "caption": null, "instance": { "id": 488431, "url": "https://svs.gsfc.nasa.gov/vis/a010000/a010700/a010708/Crab_Chandra.jpg", "filename": "Crab_Chandra.jpg", "media_type": "Image", "alt_text": "NASA's Chandra X-ray Observatory reveals the complex X-ray-emitting central region of the Crab Nebula. This image is 9.8 light-years across. Chandra observations were not compatible with the study of the nebula's hard X-ray variations. Credit: NASA/CXC/SAO/F. Seward et al.", "width": 792, "height": 792, "pixels": 627264 } }, { "id": 332856, "type": "media", "extra_data": null, "title": null, "caption": null, "instance": { "id": 488432, "url": "https://svs.gsfc.nasa.gov/vis/a010000/a010700/a010708/Crab_Chandra_web.png", "filename": "Crab_Chandra_web.png", "media_type": "Image", "alt_text": "NASA's Chandra X-ray Observatory reveals the complex X-ray-emitting central region of the Crab Nebula. This image is 9.8 light-years across. Chandra observations were not compatible with the study of the nebula's hard X-ray variations. Credit: NASA/CXC/SAO/F. Seward et al.", "width": 320, "height": 320, "pixels": 102400 } } ], "extra_data": {} }, { "id": 352309, "url": "https://svs.gsfc.nasa.gov/10708/#media_group_352309", "widget": "Single image", "title": "", "caption": "", "description": "X-ray data from NASA's Fermi, RXTE, and Swift satellites and the European Space Agency's International Gamma-Ray Astrophysics Laboratory (INTEGRAL) confirm that the Crab Nebula's output has declined about 7 percent in two years at energies from 15,000 to 50,000 electron volts. They also show that the Crab has brightened or faded by as much as 3.5 percent a year since 1999. Fermi's Large Area Telescope (LAT) has detected powerful gamma-ray flares (magenta lines) as well.
Credit: NASA/Goddard Space Flight Center", "items": [ { "id": 332858, "type": "media", "extra_data": null, "title": null, "caption": null, "instance": { "id": 488434, "url": "https://svs.gsfc.nasa.gov/vis/a010000/a010700/a010708/Crab_fade_100dpi.jpg", "filename": "Crab_fade_100dpi.jpg", "media_type": "Image", "alt_text": "The Crab Nebula, created by a supernova seen nearly a thousand years ago, is one of the sky's most famous \"star wrecks.\" For decades, most astronomers have regarded it as the steadiest beacon at X-ray energies, but data from orbiting observatories show unexpected variations, showing astronomers their hard X-ray \"standard candle\" isn't as steady as they once thought. From 1999 to 2008, the Crab brightened and faded by as much as 3.5 percent a year, and since 2008, it has faded by 7 percent. The Gamma-ray Burst Monitor on NASA's Fermi satellite first detected the decline, and Fermi's Large Area Telescope also spotted two gamma-ray flares at even higher energies. Scientists think the X-rays reveal processes deep within the nebula, in a region powered by a rapidly spinning neutron star — the core of the star that blew up. But figuring out exactly where the Crab's X-rays are changing over the long term will require a new generation of X-ray telescopes.", "width": 679, "height": 852, "pixels": 578508 } }, { "id": 332857, "type": "media", "extra_data": null, "title": null, "caption": null, "instance": { "id": 488433, "url": "https://svs.gsfc.nasa.gov/vis/a010000/a010700/a010708/Crab_fade_300dpi.jpg", "filename": "Crab_fade_300dpi.jpg", "media_type": "Image", "alt_text": "X-ray data from NASA's Fermi, RXTE, and Swift satellites and the European Space Agency's International Gamma-Ray Astrophysics Laboratory (INTEGRAL) confirm that the Crab Nebula's output has declined about 7 percent in two years at energies from 15,000 to 50,000 electron volts. They also show that the Crab has brightened or faded by as much as 3.5 percent a year since 1999. Fermi's Large Area Telescope (LAT) has detected powerful gamma-ray flares (magenta lines) as well.Credit: NASA/Goddard Space Flight Center", "width": 2556, "height": 2037, "pixels": 5206572 } }, { "id": 332859, "type": "media", "extra_data": null, "title": null, "caption": null, "instance": { "id": 488435, "url": "https://svs.gsfc.nasa.gov/vis/a010000/a010700/a010708/Crab_fade_100dpi_web.png", "filename": "Crab_fade_100dpi_web.png", "media_type": "Image", "alt_text": "X-ray data from NASA's Fermi, RXTE, and Swift satellites and the European Space Agency's International Gamma-Ray Astrophysics Laboratory (INTEGRAL) confirm that the Crab Nebula's output has declined about 7 percent in two years at energies from 15,000 to 50,000 electron volts. They also show that the Crab has brightened or faded by as much as 3.5 percent a year since 1999. Fermi's Large Area Telescope (LAT) has detected powerful gamma-ray flares (magenta lines) as well.Credit: NASA/Goddard Space Flight Center", "width": 320, "height": 255, "pixels": 81600 } } ], "extra_data": {} }, { "id": 352310, "url": "https://svs.gsfc.nasa.gov/10708/#media_group_352310", "widget": "Single image", "title": "", "caption": "", "description": "X-ray data from NASA's Fermi, RXTE, and Swift satellites and the European Space Agency's International Gamma-Ray Astrophysics Laboratory (INTEGRAL) confirm that the Crab Nebula's output has declined about 7 percent in two years at energies from 15,000 to 50,000 electron volts. They also show that the Crab has brightened or faded by as much as 3.5 percent a year since 1999. Fermi's Large Area Telescope (LAT) has detected powerful gamma-ray flares (magenta lines) as well. No Labels.
Credit: NASA/Goddard Space Flight Center", "items": [ { "id": 332860, "type": "media", "extra_data": null, "title": null, "caption": null, "instance": { "id": 488436, "url": "https://svs.gsfc.nasa.gov/vis/a010000/a010700/a010708/Crab_fade_300dpi_no_labels.jpg", "filename": "Crab_fade_300dpi_no_labels.jpg", "media_type": "Image", "alt_text": "X-ray data from NASA's Fermi, RXTE, and Swift satellites and the European Space Agency's International Gamma-Ray Astrophysics Laboratory (INTEGRAL) confirm that the Crab Nebula's output has declined about 7 percent in two years at energies from 15,000 to 50,000 electron volts. They also show that the Crab has brightened or faded by as much as 3.5 percent a year since 1999. Fermi's Large Area Telescope (LAT) has detected powerful gamma-ray flares (magenta lines) as well. No Labels.Credit: NASA/Goddard Space Flight Center", "width": 2556, "height": 2037, "pixels": 5206572 } }, { "id": 332861, "type": "media", "extra_data": null, "title": null, "caption": null, "instance": { "id": 488437, "url": "https://svs.gsfc.nasa.gov/vis/a010000/a010700/a010708/Crab_fade_300dpi_no_labels_web.png", "filename": "Crab_fade_300dpi_no_labels_web.png", "media_type": "Image", "alt_text": "X-ray data from NASA's Fermi, RXTE, and Swift satellites and the European Space Agency's International Gamma-Ray Astrophysics Laboratory (INTEGRAL) confirm that the Crab Nebula's output has declined about 7 percent in two years at energies from 15,000 to 50,000 electron volts. They also show that the Crab has brightened or faded by as much as 3.5 percent a year since 1999. Fermi's Large Area Telescope (LAT) has detected powerful gamma-ray flares (magenta lines) as well. No Labels.Credit: NASA/Goddard Space Flight Center", "width": 320, "height": 255, "pixels": 81600 } } ], "extra_data": {} }, { "id": 352311, "url": "https://svs.gsfc.nasa.gov/10708/#media_group_352311", "widget": "Single image", "title": "", "caption": "", "description": "This view of the Crab Nebula in visible light comes from the Hubble Space Telescope and spans 12 light-years. The supernova remnant, located 6,500 light-years away in the constellation Taurus, is among the best-studied objects in the sky.
Credit: NASA/ESA/ASU/J. Hester ", "items": [ { "id": 332862, "type": "media", "extra_data": null, "title": null, "caption": null, "instance": { "id": 488438, "url": "https://svs.gsfc.nasa.gov/vis/a010000/a010700/a010708/Crabmosaic_hst.jpg", "filename": "Crabmosaic_hst.jpg", "media_type": "Image", "alt_text": "This view of the Crab Nebula in visible light comes from the Hubble Space Telescope and spans 12 light-years. The supernova remnant, located 6,500 light-years away in the constellation Taurus, is among the best-studied objects in the sky. Credit: NASA/ESA/ASU/J. Hester ", "width": 2228, "height": 2232, "pixels": 4972896 } }, { "id": 332863, "type": "media", "extra_data": null, "title": null, "caption": null, "instance": { "id": 488439, "url": "https://svs.gsfc.nasa.gov/vis/a010000/a010700/a010708/Crabmosaic_hst_LowQ.jpg", "filename": "Crabmosaic_hst_LowQ.jpg", "media_type": "Image", "alt_text": "This view of the Crab Nebula in visible light comes from the Hubble Space Telescope and spans 12 light-years. The supernova remnant, located 6,500 light-years away in the constellation Taurus, is among the best-studied objects in the sky. Credit: NASA/ESA/ASU/J. Hester ", "width": 2228, "height": 2232, "pixels": 4972896 } }, { "id": 332864, "type": "media", "extra_data": null, "title": null, "caption": null, "instance": { "id": 488440, "url": "https://svs.gsfc.nasa.gov/vis/a010000/a010700/a010708/Crabmosaic_hst_LowQ_web.png", "filename": "Crabmosaic_hst_LowQ_web.png", "media_type": "Image", "alt_text": "This view of the Crab Nebula in visible light comes from the Hubble Space Telescope and spans 12 light-years. The supernova remnant, located 6,500 light-years away in the constellation Taurus, is among the best-studied objects in the sky. Credit: NASA/ESA/ASU/J. Hester ", "width": 320, "height": 320, "pixels": 102400 } } ], "extra_data": {} }, { "id": 352312, "url": "https://svs.gsfc.nasa.gov/10708/#media_group_352312", "widget": "Single image", "title": "", "caption": "", "description": "Graph of Crab Nebula variablity with low-resolution \"pixel\" view of Crab Nebula.
Credit: NASA/Goddard Space Flight Center", "items": [ { "id": 332868, "type": "media", "extra_data": null, "title": null, "caption": null, "instance": { "id": 488444, "url": "https://svs.gsfc.nasa.gov/vis/a010000/a010700/a010708/Pixel_Graph_1280x720.jpg", "filename": "Pixel_Graph_1280x720.jpg", "media_type": "Image", "alt_text": "Graph of Crab Nebula variablity with low-resolution \"pixel\" view of Crab Nebula.Credit: NASA/Goddard Space Flight Center", "width": 1280, "height": 720, "pixels": 921600 } }, { "id": 332866, "type": "media", "extra_data": null, "title": null, "caption": null, "instance": { "id": 488442, "url": "https://svs.gsfc.nasa.gov/vis/a010000/a010700/a010708/Pixel_Graph_2560x1440.jpg", "filename": "Pixel_Graph_2560x1440.jpg", "media_type": "Image", "alt_text": "Graph of Crab Nebula variablity with low-resolution \"pixel\" view of Crab Nebula.Credit: NASA/Goddard Space Flight Center", "width": 2560, "height": 1440, "pixels": 3686400 } }, { "id": 332869, "type": "media", "extra_data": null, "title": null, "caption": null, "instance": { "id": 488445, "url": "https://svs.gsfc.nasa.gov/vis/a010000/a010700/a010708/Pixel_Graph_1280x720_web.png", "filename": "Pixel_Graph_1280x720_web.png", "media_type": "Image", "alt_text": "Graph of Crab Nebula variablity with low-resolution \"pixel\" view of Crab Nebula.Credit: NASA/Goddard Space Flight Center", "width": 320, "height": 180, "pixels": 57600 } }, { "id": 332867, "type": "media", "extra_data": null, "title": null, "caption": null, "instance": { "id": 488443, "url": "https://svs.gsfc.nasa.gov/vis/a010000/a010700/a010708/Pixel_Graph_1280x720.tiff", "filename": "Pixel_Graph_1280x720.tiff", "media_type": "Image", "alt_text": "Graph of Crab Nebula variablity with low-resolution \"pixel\" view of Crab Nebula.Credit: NASA/Goddard Space Flight Center", "width": 1280, "height": 720, "pixels": 921600 } }, { "id": 332865, "type": "media", "extra_data": null, "title": null, "caption": null, "instance": { "id": 488441, "url": "https://svs.gsfc.nasa.gov/vis/a010000/a010700/a010708/Pixel_Graph_2560x1440.tif", "filename": "Pixel_Graph_2560x1440.tif", "media_type": "Image", "alt_text": "Graph of Crab Nebula variablity with low-resolution \"pixel\" view of Crab Nebula.Credit: NASA/Goddard Space Flight Center", "width": 2560, "height": 1440, "pixels": 3686400 } } ], "extra_data": {} }, { "id": 352313, "url": "https://svs.gsfc.nasa.gov/10708/#media_group_352313", "widget": "Single image", "title": "", "caption": "", "description": "Artist interpretation of Crab supernova.
Credit: NASA/Goddard Space Flight Center", "items": [ { "id": 332873, "type": "media", "extra_data": null, "title": null, "caption": null, "instance": { "id": 488449, "url": "https://svs.gsfc.nasa.gov/vis/a010000/a010700/a010708/Supernova_Still_1280x720.jpg", "filename": "Supernova_Still_1280x720.jpg", "media_type": "Image", "alt_text": "Artist interpretation of Crab supernova.Credit: NASA/Goddard Space Flight Center", "width": 1280, "height": 720, "pixels": 921600 } }, { "id": 332871, "type": "media", "extra_data": null, "title": null, "caption": null, "instance": { "id": 488447, "url": "https://svs.gsfc.nasa.gov/vis/a010000/a010700/a010708/Supernova_Still_2560x1440.jpg", "filename": "Supernova_Still_2560x1440.jpg", "media_type": "Image", "alt_text": "Artist interpretation of Crab supernova.Credit: NASA/Goddard Space Flight Center", "width": 2560, "height": 1440, "pixels": 3686400 } }, { "id": 332874, "type": "media", "extra_data": null, "title": null, "caption": null, "instance": { "id": 488450, "url": "https://svs.gsfc.nasa.gov/vis/a010000/a010700/a010708/Supernova_Still_1280x720_web.png", "filename": "Supernova_Still_1280x720_web.png", "media_type": "Image", "alt_text": "Artist interpretation of Crab supernova.Credit: NASA/Goddard Space Flight Center", "width": 320, "height": 180, "pixels": 57600 } }, { "id": 332872, "type": "media", "extra_data": null, "title": null, "caption": null, "instance": { "id": 488448, "url": "https://svs.gsfc.nasa.gov/vis/a010000/a010700/a010708/Supernova_Still_1280x720.tiff", "filename": "Supernova_Still_1280x720.tiff", "media_type": "Image", "alt_text": "Artist interpretation of Crab supernova.Credit: NASA/Goddard Space Flight Center", "width": 1280, "height": 720, "pixels": 921600 } }, { "id": 332870, "type": "media", "extra_data": null, "title": null, "caption": null, "instance": { "id": 488446, "url": "https://svs.gsfc.nasa.gov/vis/a010000/a010700/a010708/Supernova_Still_2560x1440.tif", "filename": "Supernova_Still_2560x1440.tif", "media_type": "Image", "alt_text": "Artist interpretation of Crab supernova.Credit: NASA/Goddard Space Flight Center", "width": 2560, "height": 1440, "pixels": 3686400 } } ], "extra_data": {} }, { "id": 352314, "url": "https://svs.gsfc.nasa.gov/10708/#media_group_352314", "widget": "Basic text", "title": "For More Information", "caption": "", "description": "See [http://www.nasa.gov/mission_pages/GLAST/news/crab-nebula-surprise.html](http://www.nasa.gov/mission_pages/GLAST/news/crab-nebula-surprise.html)", "items": [], "extra_data": {} } ], "studio": "gms", "funding_sources": [ "NASA Astrophysics" ], "credits": [ { "role": "Animator", "people": [ { "name": "Scott Wiessinger", "employer": "UMBC" } ] }, { "role": "Narrator", "people": [ { "name": "Scott Wiessinger", "employer": "UMBC" } ] }, { "role": "Producer", "people": [ { "name": "Scott Wiessinger", "employer": "UMBC" } ] }, { "role": "Scientist", "people": [ { "name": "Colleen Wilson-Hodge", "employer": "NASA/MSFC" } ] }, { "role": "Science writer", "people": [ { "name": "Francis Reddy", "employer": "University of Maryland College Park" } ] }, { "role": "Graphics", "people": [ { "name": "Francis Reddy", "employer": "University of Maryland College Park" } ] } ], "missions": [ "Fermi Gamma-ray Space Telescope", "RXTE", "Swift" ], "series": [ "Astrophysics Features", "Astrophysics Stills", "Fermi", "Goddard Shorts", "Narrated Movies" ], "tapes": [ "Crab Nebula Variability (Produced by: Robert Crippen)" ], "papers": [ "http://iopscience.iop.org/2041-8205/727/2/L40/pdf/apjl_727_2_40.pdf", "http://iopscience.iop.org/2041-8205/727/2/L40/pdf/apjl_727_2_40.pdf" ], "datasets": [ { "name": "", "common_name": "", "platform": "Fermi", "sensor": "LAT", "type": "Event List", "organizations": [], "description": "Fermi Gamma-ray Large Area Space Telescope (GLAST) Large Area Telescope (LAT)", "credit": "", "url": "http://fermi.gsfc.nasa.gov", "date_range": null }, { "name": "", "common_name": "", "platform": "Swift", "sensor": null, "type": "Other", "organizations": [], "description": "", "credit": "", "url": "", "date_range": null }, { "name": "", "common_name": "", "platform": "Fermi", "sensor": null, "type": "Other", "organizations": [], "description": "", "credit": "", "url": "", "date_range": null } ], "nasa_science_categories": [ "Universe" ], "keywords": [ "Ast", "Astrophysics", "Earth Science", "Fermi", "Gamma Ray", "HDTV", "Narrated", "Nebula", "Neutron Star", "Pulsar", "RXTE", "Satellite", "Spectral/Engineering", "Star", "Supernova", "Swift", "X-ray" ], "recommended_pages": [], "related": [], "sources": [], "products": [], "newer_versions": [], "older_versions": [], "alternate_versions": [] }