15 June 2016 — The LIGO Scientific Collaboration and the Virgo collaboration identify a second gravitational wave event in the data from Advanced LIGO detectors.
On December 26, 2015 at 03:38:53 UTC, scientists observed gravitational waves — ripples in the fabric of spacetime — for the second time. The gravitational waves were detected by both of the twin Laser Interferometer Gravitational – Wave Observatory (LIGO) detectors, located in Livingston, Louisiana, and Hanford, Washington, USA.
More about this detecton at this website and the LIGO Lab website.