Scientists just discovered the fastest star in our galaxy, S301, racing around Sagittarius A at mind-bending speeds—so close it’s practically orbiting at Saturn-Sun distance. Its wild trajectory is fueled by the black hole’s gravity, explaining its speed spikes and slowdowns. Astronomers believe it was ripped from a binary star system, leaving S301 trapped in orbit while its twin was flung out of the galaxy. What makes this star truly special? It could be the key to measuring if Sagittarius A is spinning—and how fast. First spotted in 2023, S301’s closest approach happened last year, with another expected in 2031. This extreme proximity might finally unlock secrets about the black hole’s spin, which warps space itself.
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