Gravitational waves
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Gravitational waves are ripples in spacetime created by any very dense object that appears to change shape to a distant observer.
Gravitational waves were predicted to exist by Albert Einstein in 1916 on the basis of his theory of general relativity.[1] Gravitational waves theoretically transport energy as gravitational radiation.
Sources of detectable gravitational waves could possibly include binary star systems composed of white dwarfs, neutron stars, or black holes
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