Gravitational waves are ripples in the fabric of spacetime caused by the motion of massive objects, like colliding black holes or neutron stars.
They were predicted by Einstein’s theory of general relativity, and their detection in 2015 was a major scientific breakthrough, confirming a key prediction of Einstein’s theory.
Gravitational waves carry information about their cataclysmic origins and about the nature of gravity itself.
This video will explain what gravitational waves are, how they are generated, and how they are detected by sensitive instruments like the Laser Interferometer Gravitational-Wave Observatory (LIGO)
