Laser Interferometer Gravitational-Wave Observatory
Nikon D4 + 24-70mm f/2.8G | LIGO, Livingston Parish, LA, 24 Jul 2012
© 2012 José Francisco Salgado, PhD
Do not use without permission.
The Laser Interferometer Gravitational-Wave Observatory (LIGO) is a large-scale physics experiment aiming to directly detect gravitational waves. Its mission is to directly observe gravitational waves of cosmic origin. These waves were first predicted by Einstein's general theory of relativity in 1916, when the technology necessary for their detection did not yet exist. Gravitational waves were indirectly suggested to exist when observations were made of the binary pulsar PSR 1913+16, for which the Nobel Prize was awarded to Hulse and Taylor in 1993. Direct detection of gravitational waves has long been sought. Their discovery would launch a new branch of astronomy to complement electromagnetic telescopes and neutrino observatories. [Source: Wikipedia]