ecns [expanded by feedex.net]: NASA captures an exploding star's brief scream for first time

ecns [expanded by feedex.net]

ecns

NASA captures an exploding star's brief scream for first time
http://www.ecns.cn/visual/hd/2016/03-22/89791.shtml
Mar 22nd 2016, 15:40

This image taken from a video animation shows the brilliant flash of an exploding star¡¯s shockwave - what astronomers call the ¡°shock breakout¡±. The cartoon video begins with a view of a red supergiant star that is 500 hundred times bigger and 20,000 brighter than our sun. When the star¡¯s internal furnace can no longer sustain nuclear fusion its core to collapses under gravity. A shockwave from the implosion rushes upward through the star¡¯s layers. The shockwave initially breaks through the star¡¯s visible surface as a series of finger-like plasma jets. Only 20 minute later the full fury of the shockwave reaches the surface and the doomed star blasts apart as a supernova explosion. This animation is based on photometric observations made by NASA¡¯s Kepler space telescope. By closely monitoring the star KSN 2011d, located 1.2 billion light-years away, Kepler caught the onset of the early flash and subsequent explosion. (Photo/NASA)
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