[collision] Welcome to LIGO Hanford Observatory, located in the Columbia Basin region of southeastern Washington. LIGO, the Laser Interferometer Gravitational-wave Observatory, seeks to detect gravitational waves -- ripples in the fabric of spacetime. First predicted by Einstein in his theory of general relativity, gravitational waves are produced by exotic events involving black holes, neutron stars and objects perhaps not yet discovered. Use our links to explore LIGO science, public outreach and educational resources.
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Up and Coming at LIGO Hanford Observatory . . .
A new documentary movie: LIGO Generations
Filmmaker Kai Staats explores the connections between senior LIGO personnel and younger LIGO researchers who are launching their careers in the field of gravitational wave astronomy. LIGO Generations is a companion to Staats' earlier film, LIGO: A Passion for Understanding.

[121411] What do you want to know about LIGO? LIGO Hanford's list of Frequently Asked Questions (FAQ) now resides on our Web site. Surf our FAQ for responses to often-asked questions that cover various aspects of LIGO detector operations, data analysis, astronomy/astrophysics and working life at the Observatory. LIGO Hanford thanks students from Liberty High School and Sammamish High School for sending in the questions that started the LHO FAQ!
View recent Advanced LIGO progress at LIGO Hanford by sampling our updated video collection. LHO now has completed the first two tests of Advanced LIGO seismic and suspension subsystems and optical controls, exercising Advanced LIGO hardware between the main laser and one of the detector end stations. The next test, resonating the laser light in the central portion of the detector, is now underway. Commissioning of the full advanced H1 and L1 interferometers will begin in 2014 as the LIGO team moves toward a late 2014 return to detector operations. View the videos[LHO HAM 2]
Explore LIGO . . .
[LIGO movie]LIGO, a Passion for Understanding

Stream this 22-minute film from Space.com to see Advanced LIGO coming to life and to hear the thoughts and reflections of a number of LIGO personnel as they continue the journey toward gravitational wave detections on LIGO's huge interferometers.
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Test your skill  in searching for gravitational waves. Play
Black Hole Hunter !

• Last modified Feb 12, 2015
• "Colliding Black Holes" courtesy of Werner Benger, Zuse Institute Berlin, Max-Planck Institutue fuer Gravitational Physics (Albert Einstein Institute) and the Center for Computation & Technology at Louisiana State University.
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LIGO is supported by the National Science Foundation. Any opinions, findings, conclusions or recommendations expressed here are those of the author(s) and do not necessarily reflect the views of the National Science Foundation