Gravitational Waves Explained
Everything you need to know about gravitational waves. In February 2016 scientists announced the first detection of gravitational waves by humans on Earth. This was a huge, world-changing, discovery. The gravitational waves were caused by a pair of colliding black holes 1.3 billion light-years away 1.3 billion years ago. This video summarizes all of the mind-blowing facts about gravitational waves and describes LIGO, the incredibly sensitive telescope that detected them.