The LIGO experiment captures gravitational waves produced by the merger of two extremely dense stars

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One of the most precise scientific instruments ever built detected a tiny deformation of space-time on April 25. The two beams of laser light from the LIGO detector in the United States traveled a distance less than one-thousandth the size of a proton. After months of analysis, those responsible for the experiment have just announced that the signal was a gravitational wave produced by one of the most violent phenomena in the universe: the merger of two neutron stars.

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