Scientists just found S301, one of the fastest stars ever recorded, orbiting Sagittarius A* — the supermassive black hole at the center of the Milky Way. At its closest approach, S301 gets within just 12 AU of the black hole and accelerates past 25,000 km/s, roughly 8% the speed of light — fast enough to circle Earth in under 2 seconds. This extreme pass happens every 9 years, and the next one in 2031 could help astronomers finally measure the black hole's spin.
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