Roughly 90 percent of the biggest black holes in the known universe are dormant, meaning that they are not actively devouring matter and, consequently, not giving off any light or other radiation. But sometimes a star wanders ...
Jun 22, 2016 in Astronomy
Scientists may have found a link between the pulsations of light coming from a black hole accretion disk and the "breathing" of that disk.
Jun 21, 2016 in Astronomy