File:Portrait of a Doomed Asteroid.jpg
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[edit]DescriptionPortrait of a Doomed Asteroid.jpg |
English: A new study provides a possible explanation of mysterious X-ray flares detected by the Chandra X-ray Observatory for several years in the region of Sagittarius A*, or Sgr A*. The study suggests a cloud around Sgr A*, a supermassive black hole at the center of our Milky Way Galaxy, which contains hundreds of trillions of asteroids and comets that have been stripped from their parent stars. The flares occur when asteroids of six miles or larger in radius are consumed by the black hole. An asteroid that undergoes a close encounter with another object, such as a star or planet, can be thrown into an orbit headed towards Sgr A*. If the asteroid passes within about 100 million miles of the black hole, roughly the distance between the Earth and the sun, it is torn into pieces by the tidal forces from the black hole. These fragments would then be vaporized by friction as they pass through the hot, thin gas flowing onto Sgr A*, similar to a meteor heating up and glowing as it falls through Earth's atmosphere. A flare is produced and eventually the remains of the asteroid are swallowed by the black hole. |
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Source | http://www.nasa.gov/multimedia/imagegallery/image_feature_2172.html | ||||||
Author | NASA/CXC/M.Weiss | ||||||
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current | 08:39, 17 February 2012 | 1,224 × 792 (426 KB) | Salamander724 (talk | contribs) |
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Author | Chandra X-ray Observatory Center |
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Headline | Illustration of the supermassive black hole at the center of the Milky Way galaxy. |
Credit/Provider | X-ray: NASA/CXC/MIT/F. Baganoff et al.; Illustrations: NASA/CXC/M.Weiss |
Source | Chandra X-ray Observatory |
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Usage terms | |
Date and time of data generation | 8 February 2012 |
Orientation | Normal |
Horizontal resolution | 0.0060975609756098 dpi |
Vertical resolution | 0.00028888888888889 dpi |
File change date and time | 5 Macintosh |
Exif version | 2.21 |
Color space | sRGB |
Software used | Adobe Photoshop CS5 Macintosh |
Date and time of digitizing | 05:25, 16 January 2012 |
Date metadata was last modified | 09:16, 8 February 2012 |
Unique ID of original document | xmp.did:0180117407206811BE31E04D559AB3FF |
Keywords | Sagittarius A* |
Contact information | cxcpub@cfa.harvard.edu
60 Garden St. Cambridge, MA, 02138 USA |
IIM version | 4 |
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