Black holes may have given up some secrets of their growth thanks to the sleuthing of two X-ray space telescopes. The findings have solved a long-standing mystery about a supermass[...]

This NASA image shows a new image of a ring – not of jewels – but of black holes. This composite image of Arp 147, a pair of interacting galaxies located about 430 mill[...]

This is the X-ray nova flaring black hole. NASA’s Swift satellite recently detected a rising tide of high-energy X-rays from a source toward the center of our Milky Way galax[...]