1.3 billion years ago in a galaxy far, far away 2 black holes merged and created traveling distortions in the fabric of space-time, Gravitational waves. And in one-tenth of a second, the gravitational waves released energy that was 50 times greater than the energy being released by everything else in the observable universe combined. These gravitational waves were detected on Earth on 14 Sept 2015 through LIGO, Laser Interferometer Gravitational-Wave Observatory.
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