Laser Interferometer Gravitational-Wave Observatory | astronomical observatory, Hanford, Washington and Livingston, Louisiana, United States | Britannica
LIGO: Detecting gravitational waves uncovers the Universe's mysteries
Gravitational-Wave Observatory Obtains Mass of Discoveries | Discover Magazine
What is an Interferometer? | LIGO Lab | Caltech
Gravitational waves discovered: how did the experiment at LIGO actually work?
6 Amazing Facts About Gravitational Waves and LIGO | Britannica