Gravitational ripples in space-time, first predicted by Albert Einstein, have now been detected by scientists at the US Laser Interferometer Gravitational Wave Observatory in Louisiana and Hardford. Physicists have detected gravitational waves coming from the collision of two massive black holes 1.5 billion light years away. Super-sensitive instruments detected the movements caused by the gravitational waves as they passed through the Earth.
As the two black holes spiralled into one another in a violent collision lasting a second, immense matter was instantly converted into energy, sending shock waves for 1.5 billion years until they were picked up by gravitational-wave instruments. It not only confirms Einstein's theory of relativity, it is also the first direct detection of colliding black holes, which are so dense they exert a gravitational force from which not even light can escape. It has been hailed as the greatest scientific discovery so far this century, bigger than the Higgs boson.