Black holes colliding, video

This video says about itself:

11 February 2016

The Sound of Two Black Holes Colliding (Edited Longer Version). By LIGO

In Milestone, Scientists Detect Gravitational Waves As Black Holes Collide: here.

Astronomers from the Laser Interferometer Gravitational-wave Observatory (LIGO) Collaboration have published the first detection of gravitational waves, ripples in the fabric of space and time. The announcement comes almost exactly a century after Albert Einstein, in mid-1916, predicted the existence of the waves on the basis of his Theory of General Relativity: here.

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