On 26th of December 2015 the LIGO detectors picked up a second gravitational-wave signal, dubbed 'GW151226', from yet another pair of merging black holes.
According to DW, Albert Einstein posited the existence of gravitational waves a century ago in his Theory of Relativity. He described how waves were produced by disturbances in the fabric of space and time when a massive object - such as a black hole or a neutron star - moved through space-time.
German Embassy Washington shared on Facebook:
'Physicists have confirmed for a second time that Einstein was right about gravitational waves. The wave signal was detected from the merger of two black holes, scientists from the LIGO and Virgo collaborations announced today. Researchers from the Max Planck Institute for Gravitational Physics in Potsdam and Hannover and the Leibniz Universität Hannover made significant contributions to the discovery. "This second discovery proves that a new era of gravitational-wave astronomy has begun," the Max Planck Institute said on its website.'