Posts tagged as Swift

Kilonova gravitational-wave captured

For the first time, NASA scientists have detected light tied to a gravitational-wave event as two neutron stars merged in the galaxy NGC 4993, located about 130-million light-years from Earth in the constellation Hydra. On 27 August 2017, the space agency’s Fermi Gamma-ray Space Telescope picked up a pulse of high-energy light from a powerful […]