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Gamma-ray burst 'hit Earth in 8th Century'

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Author Topic: Gamma-ray burst 'hit Earth in 8th Century'  (Read 317 times)
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« on: January 21, 2013, 01:54:38 pm »

    Gamma ray bursts were discovered in the 1960s by satellites designed to detect explosions from nuclear bombs on Earth
    They are hundreds of times brighter than supernovae and about a million trillion times brighter than the Sun
    Some gamma ray bursts have travelled over 13 billion light years, meaning they originated from some of the most distant objects ever detected
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