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LIGO Scientific Collaboration and the Virgo Collaboration announced the discovery of a second binary neutron star merger

Artist's impression of the binary neutron star merger observed by LIGO Livingston on April 25, 2019. Image credit: National Science Foundation/LIGO/Sonoma State University/A. Simonnet.

From ligo.org:  "On January 6, 2020, the LIGO Scientific Collaboration and the Virgo Collaboration announced the discovery of a second binary neutron star merger, labeled GW190425. This is the first confirmed gravitational-wave detection based on data from a single observatory. No electromagnetic counterpart was found. This system is notable for having a total mass that exceeds that of known galactic neutron star binaries."

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