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| MPI/Gravitational Physics/ITP Frankfurt/ZI Berlin |
In a highly anticipated announcement this week, physicists with the Laser Interferometer Gravitational-Wave Observatory (LIGO) confirmed the existence of gravitational waves - or ripples in the fabric of spacetime. The team of scientists revealed how on September 14, 2015, twin detectors observed the gravitational 'ringing' produced by the collision of two black holes a billion light years away. The scientists listened for 20 thousandths of a second as the two giant black holes, one 35 times the mass of the sun, the other slightly smaller, circled around each other. As they finally merged, a tremendous burst of energy was released, propagating through space as gravitational waves.
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