One of the great mysteries about our universe has been solved!
The discovery means that we might be able to work out what happened at the beginning of the universe, including the big bang!
So what’s been discovered I hear you cry?
Well, it’s something called a gravitational wave, which are huge ripples in the universe.
They happen when two massive objects hit each other and send out waves which are so powerful they squeeze and stretch space and time!
Discovering these gravitational waves means that scientists will be able to trace back billions of years to the very start of the universe!
Watch this video for a full explanation of gravitational waves…