LIGO and Virgo made 5 likely gravitational wave detections in a month

Spacetime ripples came from colliding black holes, neutron stars and maybe a new kind of event

neutron star merging with black hole

NEW TYPE?  Scientists from the LIGO and Virgo experiments may have spotted spacetime ripples from a brand new source: a neutron star melding with a black hole (illustrated in a computer simulation).

F. Foucart/UNH and SXS Collaboration/Classical and Quantum Gravity 2017

Gravitational wave sightings are now a weekly occurrence.