A 3 billion solar mass black hole rockets out of a galaxy at 8 million kilometers per hour. Yes, seriously.
"A black hole with threeÂ billion times the mass of the Sun has been found hurtling out of its parent galaxy at 8 million kilometers per hour! What could give it that kind of incredibleÂ boost? Turns out, it's something even more incredible: The two supermassive black holes that merged to form it in the first place...."