This is how researchers listed to gravitational waves..wow. Here is a bit more background on the subject:
A century ago, Albert Einstein postulated the existence of gravitational waves in his General Theory of Relativity. But until now, these distortions of space-time have remained stubbornly hidden from direct observation. At the Max Planck Institute for Gravitational Physics in Hanover, researchers are on the trail of this phenomenon with the GEO600 detector. At the heart of the installation is a laser.
Let’s find out how they accomplish this on the next page and see a cool video!
