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

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

Gravitational waves are unlocking the secrets of the universe, and scientists have just made a groundbreaking discovery.

L ast month, work began on the world’s first space-based gravitational wave detector. The European Space Agency and partner aerospace companies are developing orbiting, detector spacecraft to observe ...