When Black Holes Eat Their Own

Artist impression of a black hole merger (Credit : NASA/CXC/A.Hobart)

Black holes are eating each other and growing fat on the remains! They then seem to move on, finding new partners to devour in what can only be described as a cycle of violence. Two gravitational wave detections from late 2024 have caught these “second generation” black holes in the act, one spinning so fast it ranks among the most extreme ever observed, the other rotating backwards. These aren’t simple collisions between black holes born from dying stars, instead they’re the products of earlier mergers now colliding again in crowded stellar neighbourhoods, carrying the scars and strange spins of their violent pasts into the fabric of spacetime itself.

Universe Today
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