Researchers have spent the past few years watching a black hole re-awaken roughly 300 million light-years away from Earth.

Astronomers have detected an erupting supermassive black hole producing some of the largest jets ever seen bursting from a galaxy with the same shape as our own. The galaxy in question also ...

Views of a massive galaxy cluster Abell 2256 have been captured by NASA’s Chandra X-ray Observatory, ESA’s XMM-Newton and ...