Detections

So far, there have been five detections of gravitational waves, thanks to the Laser Interferometer Gravitational-Wave Observatory (LIGO) and, more recently, the European Virgo gravitational-wave detector.

Scientists at the LIGO and VIRGO observatories detected and confirmed the first gravitational waves produced by the collision and merger of a black hole with a neutron star, not once but twice within 10 days of each other. Previously confirmed gravitational wave detections were the results of either the collisions of a black hole and another black hole or a neutron star with a neutron star, not one of each.