[Nateman]

Galaxy OJ 287 has a black hole with 18 billion solar masses orbited by another black hole with 150 million solar masses. Every once in a while it would flare up with one trillion times the normal brightness. One they figured out what was happening they predicted a flare up to within 15 minutes.

I wrote to one of the guys in this study. At its slowest the smaller black hole is moving at 10% the speed of light. At its quickest 25%. Needless to say when this slams into the accretion disc of the big black hole it makes for quite the impact!

[Red Badger]

Galaxy OJ 287 has a black hole with 18 billion solar masses orbited by another black hole with 150 million solar masses.

Is it driving a white Ford Bronco?............................