Scientists detect echoes from the collision of black holes
Ripples in space-time generated by the collision of two black holes nearly two billion years ago have been captured by super-sensitive detectors in the US and Italy. Using a network of American and European detectors for the first time, the international team was able to trace the latest source of gravitational waves to the merger of two black holes 1.8 billion light years away. LIGO research is carried out by the LIGO Scientific Collaboration, a group of more than 1,000 scientists from universities around the US and 14 other countries The collision of two black holes nearly two billion years ago has been captured by super-sensitive detectors Professor Andreas Freise, from the University of Birmingham's Institute of Gravitational Wave Astronomy, said: 'Once again, we have detected echoes from colliding black holes but this time we can pinpoint the position of the black holes much more accurately thanks to the addition of the Virgo detector to the advanced detector network. Scientists said gravitational waves open a door for a new way to observe the universe and gain knowledge about enigmatic objects like black holes and neutron stars. LIGO operates two detector sites - one near Hanford in eastern Washington, and another near Livingston, Louisiana THE THEORY OF RELATIVITY Gravitational waves were predicted by Albert Einstein 100 years ago In 1905, Albert Einstein determined that the laws of physics are the same for all non-accelerating observers, and that the speed of light in a vacuum was independent of the motion of all observers - known as the theory of special relativity.
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