Fermi Detects 'Shocking' Surprise from Supernova's Little Cousin [HD Video] : 無料・フリー素材/写真
Fermi Detects 'Shocking' Surprise from Supernova's Little Cousin [HD Video] / NASA Goddard Photo and Video
![Fermi Detects 'Shocking' Surprise from Supernova's Little Cousin [HD Video]](http://farm5.static.flickr.com/4114/4889085984_69f5fde5bf_m.jpg)
| ライセンス | クリエイティブ・コモンズ 表示 2.1 |
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| 説明 | NASA release August 12, 2010NASA's Fermi Gamma-ray Space Telescope has detected gamma-rays from a nova for the first time. The finding stunned observers and theorists alike because it overturns a long-standing notion that novae explosions lack the power for such high-energy emissions.In March, Fermi’s Large Area Telescope (LAT) detected gamma rays -- the most energetic form of light – from the nova for 15 days. Scientists believe that the emission arose as a million-mile-per-hour shock wave raced from the site of the explosion. A nova is a sudden, short-lived brightening of an otherwise inconspicuous star. The outburst occurs when a white dwarf in a binary system erupts in an enormous thermonuclear explosion."In human terms, this was an immensely powerful eruption, equivalent to about 1,000 times the energy emitted by the sun every year," said Elizabeth Hays, a Fermi deputy project scientist at NASA's Goddard Space Flight Center in Greenbelt, Md. "But compared to other cosmic events Fermi sees, it was quite modest. We're amazed that Fermi detected it so strongly."To lean more go to: www.nasa.gov/mission_pages/GLAST/news/shocking-nova.htmlTo download this video go to: svs.gsfc.nasa.gov/goto?10626NASA Goddard Space Flight Center is home to the nation's largest organization of combined scientists, engineers and technologists that build spacecraft, instruments and new technology to study the Earth, the sun, our solar system, and the universe.Follow us on TwitterJoin us on Facebook |
| 撮影日 | 2010-08-13 12:52:20 |
| 撮影者 | NASA Goddard Photo and Video , Greenbelt, MD, USA |
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