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Tag Archives: constellation

NASA’s Swift, Fermi missions detect exceptional cosmic blast

NASA

Astronomers around the world are captivated by an unusually bright and long-lasting pulse of high-energy radiation that swept over Earth Sunday, Oct. 9. The emission came from a gamma-ray burst (GRB) – the most powerful class of explosions in the universe – that ranks among the most luminous events known. On Sunday morning Eastern time, a wave of X-rays and ...

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