写在星辰之间：银河系中心黑洞周围的恒星群

A swarm of stars that hurtles around the supermassive black hole at the centre of the Milky Way could be the key to understanding our galaxy, finds Leah Crane T HE star that astronomers call S301 isn’t your average ball of fiery plasma. For one thing, this newfound star is travelling at more than 8 per cent of the speed of light. Blink, and you’ll miss it. But there is an even more striking thing about it: the simple fact that it shouldn’t exist. S301 isn’t an isolated oddity, either; it is the fastest-known member of a superhighway of stars frenetically circling the black hole at the centre of our galaxy. …