When black holes merge, the resulting black hole exhibits an increase in both its total mass and the diameter of its event horizon. The "diameter" of a black hole refers to its event horizon, which ...

Researchers believe the 'ultramassive' black hole is big enough to be the largest of its kind ever detected. Black holes are regions of space where the pull of gravity is so intense that even light ...

Planetary scientists have come up with a new theory on the size of black holes -- claiming some of them have no "table manners", and tip their "food" directly into their mouths, eating more than one ...