The Laser Interferometer Gravitational-Wave Observatory (LIGO) is a large-scale physics experiment designed to directly detect gravitational waves. The LIGO detectors, at the LIGO Hanford Observatory (LHO) in Washington State and the LIGO Livingston Observatory (LLO) in Louisiana, are built and operated by Caltech and MIT with funding from the U.S. National Science Foundation (NSF). The LIGO Scientific Collaboration (LSC) pursues gravitational wave science with these detectors. The initial and enhanced LIGO detectors operated from 2000 to 2010, with no confirmed detections. The Advanced LIGO detectors are coming online in 2015, along with sister projects around the world. They are expected to detect gravitational waves, and measure the properties of the waves and their astrophysical sources, in the coming years.

LIGO Science Overviews

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Observatories