“LIGO is gigantic, clever, and odd-looking, and it took more than $365 million and 30 years to develop. Its ability to measure infinitesimal distances could help put the “discovery” of gravitational waves on the front page of every newspaper at any moment and herald the next big round in our understanding of gravity.”
https://www.amnh.org/explore/videos/space/gravity-making-waves/newton-einstein-gravity#:~:text=Einstein%20did.,calling%20the%20result%20space%2Dtime