Albert Einstein predicted the existence gravitational waves nearly a century ago. And now we found them!

Gravitational waves are ripples in the universe caused by super energetic cosmic events. Things like exploding stars or the merger of black hole. The waves cause tremors in atoms that make up matter as they move through spacetime.

The Laser Interferometer Gravitational Wave Observatory (LIGO), has working hard to confirm the direct detection of gravitational waves. The waves were first observed on September 14th, 2015, at 5:51 am ET by both LIGO detectors located in Livingston, Louisiana, and also Hanford, Washington. The source is a supermassive black hole collision from over 1 billion years ago.

Here is a great video from MIT Video Productions and MIT News Office on LIGO and the detection of gravitational waves.