Monster black holes did not form the usual way — their history of violence is written into spacetime ripples

🔭 The heaviest black holes in the universe weren't born — they were built. New research using LIGO–Virgo–KAGRA data reveals these cosmic giants grew through repeated violent collisions inside dense star clusters, and their spinning signatures give them away. Two distinct populations, a confirmed mass gap at 45 solar masses, and a new window into nuclear physics. The full story is on SKYCR.ORG. 🌌⚫