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LIGO Gravitational Wave Detector
LIGO Gravitational Wave Detector detects spacetime distortions smaller than one ten-thousandth the diameter of a proton, using twin 4-kilometer laser interferometers in Louisiana and Washington. Each event yields masses 30 times solar, measured with a 20% uncertainty, and the facility has logged 90 gravitational-wave events. This data-led precision has enabled tests of general relativity 100 times more stringent than any previous experiment.
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