Gamma-ray burst may represent the most powerful cosmic explosion ever recorded

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Astronomers have spotted a bright blast of high-energy light that may be the most powerful cosmic explosion ever detected. 

The high-energy emission known as a gamma-ray burst (GRB) – the most powerful type of explosion seen in our universe since the Big Bang – likely represents the moment a dying star collapsed into a black hole, triggering a tremendous supernova explosion, astronomers said.

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