On September 14th, 2015 a chirp was heard when gravitational waves emanating from the collision of a pair of massive black holes a billion light years away, vibrated a pair of L-shaped antennas in Washington State and Louisiana.
It fulfilled the last prediction of Einstein’s general theory of relativity.
In recognition of this discovery and pioneer work on gravitational waves. Dr. Weiss, 85, Dr. Thorne, 77, and Dr. Barish, 81, were awarded the 2017 Nobel Physics Prize. They were the architects and leaders of LIGO, the Laser Interferometer Gravitational-wave Observatory
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