17 October 2017
Chinese scientists on 16 October announced the observation of the "optical counterpart" of gravitational waves coming from the merger of two binary neutron stars using the Chinese survey telescope AST3-2 in Antarctica. The gravitational waves were first discovered by the U.S.-based Laser Interferometer Gravitational-Wave Observatory (LIGO) detectors on 17 August. The Chinese telescope independently observed optical signals resulting from the merger the next day, according to the Chinese Center for Antarctic Astronomy. It was the first time humans have detected gravitational waves and the corresponding electromagnetic phenomena resulting from a binary neutron star merger.
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