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Astronomers May Have Seen Colliding Black Holes Trigger a Blaze of Light  ScienceAlertA 100-solar-mass black hole merger ripples spacetime, and may flash in gamma rays  Phys.orgScientists Just Spotted a Black Hole Collision That Defies All Odds  The Daily GalaxyMerging black holes with a total mass of 100 Suns generate gravitational waves and may emit gamma-ray bursts  Universe Space TechA cosmic surprise: Black hole merger may have sparked a gamma-ray burst  Interesting Engineering