G Z The LIGO gravitational wave detector consists of two observatories »LIGO Hanford Observatory – 2 interferometers (4 km long arms and 2 km. - ppt download
The Laser Interferometer Gravitational-Wave Observatory (LIGO): Detecting ripples in space-time | Space
Multimedia Gallery - The LIGO Livingston Observatory in Louisiana aims to detect gravitational waves. | NSF - National Science Foundation
Here's How the Elusive Gravitational Waves Were Finally Detected | The Science Explorer
Gravitational-wave observatory - Wikipedia
Gravitational-wave observatory - Wikipedia
Indian LIGO to be operational by 2024' | Ahmedabad News - Times of India
Solved The Laser Interferometer Gravitational-Wave | Chegg.com
LIGO Ain't a Gravitational Wave Detector—It's an Observatory | WIRED
Laser Interferometer Gravitational-Wave Observatory work has started in Hingoli | Deccan Herald
LIGO Continues Making Waves | Features | Nov 2018 | Photonics Spectra