European Southern Observatory
Science
Astronomers find a star circling our galaxy's black hole at 25,000 kilometres a second
The numbers are hard to hold in the mind. S301 is a newly discovered star orbiting Sagittarius A* at roughly 25,000 kilometres per second, making it the fastest known star in the Milky Way, moving at about 8 per cent of the speed of light, fast enough to cross Australia's entire east coast in a