LIGO spots a third black hole merger, tightens mass limits on gravitons

Enlarge (credit: LIGO/Caltech/MIT/Sonoma State (Aurore Simonnet)) Today, the team behind the Laser Interferometer Gravitational-Wave Observatory (LIGO) is announcing the detection of a third black hole merger, the first from its second operational run. The merger shares some features with the previous ones: the black holes were bigger than expected, and their merger released a staggering […]