When Stars Are Swallowed by Black Holes, New Findings Suggest

For the first time, scientists have confirmed the existence of not one, but two black hole-neutron star collisions. The Laser Interferometer Gravitational-Wave Observatory (LIGO) and the Virgo facilities, which detect invisible gravitational waves, saw these two distinct mergers 10 days apart in January 2020. The achievement completes a long-awaited trinity of gravitational-wave interferometer observations: black…