The Laser Interferometer Gravitational-wave Observatories (LIGO) are some of the most advanced scientific instruments on the planet. Using 4 kilometer long laser beams, they are designed to detect cataclysmic cosmic events which occurred trillions of miles from Earth.
Once the stuff of science fiction, LIGO is now science fact.
In this stand-alone chapter "Sharing" from the film "LIGO, A Passion for Understanding," two LIGO scientists explain gravitational waves and how the LIGO detector functions.
The full film may be viewed at vimeo.com/kaistaats/ligo-passion