Two monster black holes just collided — it’s so massive, it shouldn’t exist

Two colossal black holes among the most massive ever seen collided in deep space, creating gravitational waves that rippled across the cosmos and shook the foundations of astrophysical theory. Detected by the LIGO-Virgo-KAGRA observatories, this record-breaking merger has stunned scientists not only because of its size, but also due to the black holes extreme spins, challenging our current understanding of how such behemoths form.

source https://www.sciencedaily.com/releases/2025/07/250714052208.htm