Astrophysicists have analyzed two merging black holes; the team's best models suggest that at least one, if not both, of the black holes shouldn't exist.

To date, the collaboration has detected dozens of merger events since its first Nobel Prize-winning discovery. Early detected mergers involved either two black holes or two neutron stars. In 2021, LIGO/Virgo/KAGRA confirmed the detection of two separate "mixed" mergers between black holes and neutron stars.

A collision observed between two black holes, each more massive than a hundred suns, is the largest merger of its kind ever recorded, according to new research.