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This 7-hour cosmic explosion is the longest gamma-ray burst ever seen. Could it be from an elusive class of black hole?

Astronomers have spotted the longest gamma-ray burst ever seen, a cosmic explosion that lasted seven hours — and they determined it could be the work of a black hole destroying a star.
Green Matters on MSN

NASA detected a black hole devouring a star — and the explosion was record-breaking

The record-setting cosmic outburst was actually a gamma-ray burst, the most powerful class of cosmic explosions.