Allan Adams : What the discovery of gravitational waves means

Allan Adams at TED2016
What the discovery of gravitational waves means  (transcript)
Summary
"LIGO": the Laser Interferometer Gravitational-Wave Observatory was built in the United State.
This is a big astronomical tool to observe the gravitational wave.
The idea came from a thought that is colliding two black holes 1.3 billion years ago.
Two black holes collided, but they didn't release their energy in light. All energy was pumped into the fabric of space and time itself, and making the Universe explode in gravitational waves. It's like a ripple and very weak.
LIGO can create its sound as frequencies. We can't see the images but we can hear the story that the waves are telling.
It means that this is a new way that lets us the Universe and hear the invisible.
What the discovery of gravitational waves means is that we can explore the first few moments of the Universe that we'll never see by listening.

Words in this story
collide /verb/ crash into, hit, strike
preposterously /adv/ ludicrously, laughably, ridiculously
ripple /noun/  wave