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The phenomenon was the result of a gamma-ray burst; the strongest and brightest explosion in the universe. The burst occurred 1.9 billion years ago, and it was likely the result of a colossal star collapsing into a black hole.
The blast, which astronomers said was the brightest of all time since the beginning of human civilisation, occurred two billion light years from Earth in October and produced a pulse of intense radiation that swept through the solar system.
A cosmic explosion two billion light years from Earth that blinded space instruments may be the brightest ever seen, astronomers have said.
A cosmic explosion two billion light years from Earth that blinded space instruments may be the brightest ever seen, astronomers have said.
The gamma-ray burst occurred two billion light-years away from Earth.