If you like mind blowing, brain stretching true stories Astro-Physics has plenty. A billion years ago, two black holes collided and created an explosion that emitted more energy than a trillion-billion suns! It was so powerful that we are still able to see and hear the cosmic ripple made by that explosion. It proves Einstein’s theory that the universe is made of an invisible fabric that holds the weight of all objects in the cosmos. We call this unseen fabric “gravity.” — Watch this amazing video!