black hole, Gravitational wave
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Gravitational-wave detectors have captured their biggest spectacle yet: two gargantuan, rapidly spinning black holes likely forged by earlier smash-ups fused into a 225-solar-mass titan, GW231123. The record-setting blast strains both the sensitivity of LIGO-Virgo-KAGRA and the boundaries of stellar-evolution theory,
Scientists are using pulsars to detect the gravitational wave 'hum' created from supermassive black hole mergers. Credit: National Science Foundation (NSF)
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