Twin black holes

Swinburne Astronomy Productions
February 24, 2016
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Swinburne Astronomy Productions

On Sept. 14, 2015, LIGO detected gravitational waves from two merging black holes, shown here in this artist's conception. The Fermi space telescope detected a burst of gamma rays 0.4 seconds later. New research suggests that the burst occurred because the two black holes lived and died inside a single, massive star.

Image credit: Swinburne Astronomy Productions