The largest black hole collision ever recorded has scientists' jaws on the floor — and scratching their heads.

The massive black hole has been dubbed GW231123. Its unusual size and behavior is challenging scientists' understanding of ...

Learn more about LIGO, the observatory that detected two massive black holes merging, the largest in recorded history.

A U.S. gravitational wave detector spotted a collision between fast-spinning “forbidden” black holes that challenge physics ...

It took less than a second for the space observatory hidden in Louisiana woods to detect a black hole that is that is ...

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

An international team of physicists discovered the largest-ever merger of 2 black holes through a phenomenon known as ...

The LIGO Hanford Observatory near the Tri-Cities and its twin in Louisiana detected ripples of time and space passing through ...

Astronomers have detected the signal of a colossal black hole in deep space that likely formed when two already-large black ...

Collaboration has detected the merger of the most massive black holes ever observed with gravitational waves using the LIGO ...

The powerful merger, designated GW231123, produced an extremely large black hole about 225 times the mass of our Sun.