SpaceGizmodoabout 2 hours ago
Star S301 Orbits Milky Way Black Hole Closest Ever
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Astronomers report in Nature the discovery of S301, an extremely faint star orbiting Sagittarius A*, the Milky Way's supermassive black hole. Its orbit is the closest and fastest known, approaching at Sun-Saturn distance. The extreme orbit links to the black hole's spin, offering a practical way to measure it.
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