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LIGO and Virgo detect neutron star smash-ups

2 May 2019, 12:00 UTC
LIGO and Virgo detect neutron star smash-ups NASA/Swift/Dana Berry

On April 25, 2019, the National Science Foundation's Laser Interferometer Gravitational-Wave Observatory (LIGO) and the European-based Virgo detector registered gravitational waves from what appears likely to be a crash between two neutron stars — the dense remnants of massive stars that previously exploded. One day later, on April 26, the LIGO-Virgo network spotted another candidate source with a potentially interesting twist: It may in fact have resulted from the collision of a neutron star and black hole, an event never before witnessed.

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