This provides evidence for: Gravitational waves are ripples in spacetime predicted by Albert Einstein's general theory of relativity. Their detection by the LIGO collaboration in 2015 provided direct evidence for this theory and opened a new window for observing the universe.
The detection of gravitational wave on 14th September, 2015 by the LIGO collaboration from the merger of two black holes, is the first direct detection of gravitational waves and the first observation of a binary black hole merger.
Asked in OPSC CS Prelims 2017 · Topic: Space (Relativistic Astrophysics and Gravitational Waves (Theory and Detection))
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