Very Large Telescope observations of the galaxy revealed that there was likely a “sudden awakening of the massive black hole at its core,” according to the European Southern Observatory (ESO). Credit; ...

A computer simulation shows how two neutron stars of unequal mass merge, form a black hole and spit out a jet of high energy matter.

NASA's Chandra X-ray Observatory has captured a striking image of a distant quasar from the "cosmic noon," including a giant ...