Universe TodayMark Thompson

LIGO detects sub-solar gravitational-wave source — potential first primordial black hole

LIGO recorded on 12 November 2025 a gravitational-wave signal from an object smaller than the Sun, a mass inconsistent with known stellar black holes. Two astrophysicists now offer an explanation; if confirmed, the event would be the first direct detection of a primordial black hole from the universe’s earliest moments.

2026-03-27T09:35:00.785636-07:00