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25 July 2008
Astronomers Discover a Supernova/Gamma Ray Burst Hybrid
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Just when we thought we were beginning to understand what supernovae and gamma ray bursts were all about. Astronomers have just uncovered the true nature of what they thought was a regular supernova observed in January. At the time, it looked like a supernova emitting a 5-minute long burst of X-rays. But these X-rays were [...]
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20 March 2008
Biggest Ever Cosmic Explosion Observed 7.5 Billion Light Years Away
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A record-breaking gamma ray burst was observed yesterday (March 19th) by NASA's Swift satellite. After red-shift observations were analysed, astronomers realized they were looking at an explosion half-way across the Universe, some 7.5 billion light years away. This means that the burst occurred 7.5 billion years ago, when the Universe was only half the age [...]