2019-01-11 01:37:55
http://www.astronomy.com/news/2019/01/astronomers-clock-a-black-hole-spinning-at-half-the-speed-of-light Researchers have used X-rays to calculated how fast a black hole spins, something that might help them see what happens as black holes age.
Clueless
2019-01-11 01:37:57
holy hell
Clueless