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An aerial photo shows Laser Interferometer Gravitational-wave Observatory (LIGO) Hanford laboratory detector site near Hanford, Washington in this undated photo released by Caltech/MIT/LIGO Laboratory on February 8, 2016. The twin detectors, a system of two identical detectors constructed to detect incredibly tiny vibrations from passing gravitational waves, are located in Livingston, Louisiana, and Hanford, Washington. Scientists said on February 11, 2016 they have for the first time detected gravitational waves, ripples in space and time hypothesized by physicist Albert Einstein a century ago, in a landmark discovery that opens a new window for studying the cosmos. (Photo by Reuters/Caltech/MIT/LIGO Laboratory)
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