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Black Hole at Milky Way Core Powers Galaxy’s Fastest Stars

ANN ARBOR, Mich.—The black hole at the center of the galaxy is to blame for sling-shotting “hypervelocity stars” out of the Milky Way at up to 1.8 million miles per hour, according to new evidence from research involving a University of Michigan astronomer. 

Hypervelocity stars, discovered about five years ago, are the fastest stars astronomers have ever observed. They are escaping the galaxy at beyond what was thought to be its stellar speed limit.

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