Location:Training / Maker Show / Popular science / LIGO discovered gravitational waves press conference Chinese subtitles / LIGO’s press conference on the discovery of gravitational waves (Chinese subtitles)

At 17:50:45 Beijing time on September 14, 2015, two detectors of the Laser Interferometer Gravitational Wave Observation Platform simultaneously observed an instantaneous gravitational wave event, coming from two objects with 29 and 36 times the solar mass respectively. The black hole, which merged into a 62-solar-mass black hole and lost 3 solar masses, is called GW150914 and is about 1.3 billion light-years away.

This event is consistent with calculations predicting the merger of a pair of mutually rotating black holes into a single black hole predicted by Einstein's general theory of relativity. The false alarm rate for similar events occurs once in 203,000. It is the first time that humans have confirmed the existence of a stellar-level binary black hole system, and it is the first time that humans have directly detected gravitational waves.