Astronomy Today@astronomytodayGravitational-wave astronomy is moving into a new stage, where researchers can study many black hole mergers at once. In January 2025, two LIGO observatories in the US picked up a signal from two black holes merging about 1.3 billion light-years away.
The black holes weighed roughly 34 and 32 times as much as the Sun. The signal, called GW250114, is the clearest the LIGO team has recorded so far.
