6 Jan 2020 — On April 25, 2019, the LIGO Livingston Observatory picked up what appeared to be gravitational ripples from a collision of two neutron stars. Now, a new study confirms that this event (GW190425) was indeed likely the result of a merger of two neutron stars. This would be only the second time this type of event has ever been observed in gravitational waves. GW190425 is the first gravitational-wave event discovered with data from a single observatory. While no electromagnetic counterpart was found, this system is notable for having a total mass that exceeds that of known galactic neutron star binaries.
For more details, see the full press release and other information at the GW190425 detection page.