How have astrophysicists detected gravitational waves?
A) Large underground water tanks show flashes of light when gravitational waves interact with their constituent particles.
B) Lasers measure tiny changes in distances as gravitational waves pass.
C) They detect showers of particles when the gravitational waves interact with Earth's atmosphere.
D) Gravitational waves have not yet been detected

Question

Quizplus · Accepted Answer

Lasers are used in facilities like LIGO (Laser Interferometer Gravitational-Wave Observatory) to measure minute changes in distances between mirrors, which indicate the passing of gravitational waves, as predicted by Einstein's theory of general relativity.

How Have Astrophysicists Detected Gravitational Waves