At 225 solar masses, this gargantuan merger of two black holes challenges our thinking on these famously elusive objects.

Joseph Giaime, head of the observatory, joined Louisiana Considered to talk to us about the event’s significance, and how ...

The merger wasn’t just the biggest ever, but also an event so rare that it challenges existing models for black hole genesis.

A gravitational wave has revealed the biggest black-hole merger ever recorded—so massive and extreme, it defies current ...

A puzzling gravitational wave was detected, and astronomers have determined that it comes from a record-breaking black hole ...

A record-breaking black hole collision has stunned scientists with its sheer scale and speed. Detected by the LIGO-Virgo-KAGRA observatories, the event merged two enormous black holes—each over 100 ...

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

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

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

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

New gravitational wave findings from the LIGO-Virgo-KAGRA Collaboration report the discovery of the largest black hole merger ...

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