The highly elusive ‘gravitational waves’ have finally been detected. After decades of search for these ripples in space-time, which Albert Einstein predicted exactly 100 years ago, scientists working with the gigantic optical instruments in the U.S. called LIGO [Laser Interferometer Gravitational-wave Observatory], have detected signals of gravitational waves emanating from two merging black holes 1.3 billion light years away arriving at their instruments on the Earth.
That is to say, this cataclysmic event of two black holes merging occurred 1.3 b yrs ago, the gravitational waves from which are being received now on the Earth. The LIGO Science Collaboration (LSC) comprises about 1000 scientists from 16 countries.