Gravitational Waves: Everything You Need To Know About The Historic Discovery

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Big news, but what does it all mean? R. Hurt/Caltech-JPL

At 5:51 a.m. EDT (9:51 a.m. GMT) on September 14, 2015, history was made. At that exact moment, the twin Laser Interferometer Gravitational-Wave Observatory (LIGO) detectors in Louisiana and Washington state independently saw evidence for gravitational waves, originating from two merging black holes 1.3 billion light-years away. It was pretty big news. You might have heard about it.