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Interferometric Systems Detect Gravitational Waves

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The observation of gravitational waves — described as ripples in the fabric of spacetime — arriving at the earth confirms a major prediction of Albert Einstein’s 1915 general theory of relativity. The gravitational waves were detected on September 14, 2015 by both of the twin Laser Interferometer Gravitational-wave Observatory (LIGO) detectors, located in Livingston, La., and Hanford, Wash. Simulation image of two black holes merging into one. Courtesy of LIGO. The LIGO Scientific Collaboration (LSC) of 15 countries includes the LIGO interferometers, as well as the GEO600...Read full article

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