Superfast star spotted orbiting Milky Way’s black hole

Gravitational close encounter to test relativity theories

If Usain Bolt were a star of the astronomical type he’d be star S0-102, which sprints around the Milky Way’s central black hole with the fastest time yet. It takes just 11.5 years for S0-102 to orbit the supermassive cosmic drain, astronomers report in the Oct. 5 Science.