The swirling spacetime and destroyed stars help reveal how fast supermassive black holes spin
The ‘wobbly’ remains of a star that died a gruesome death in the maw of a supermassive black hole have helped reveal the speed at which its cosmic predator spins. Supermassive black holes are believed to form from successive mergers of smaller black holes, each of which brings with it an angular momentum that accelerates … Read more