Scientists discover the fastest stars ever seen in the Milky Way

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Scientists discover the fastest stars ever seen in the Milky Way
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Astronomers discovered a new population of ultra-fast-moving stars, including the fastest 'runaway' star ever seen in our galaxy.

Astronomers have detected the fastest runaway star ever seen in the Milky Way galaxy — the husk of a star launched at blistering speeds from a gigantic cosmic explosion.

But a simple star explosion isn't enough to launch stars at this speed. Astronomers suspect that hypervelocity stars are sent flying by a special kind of Type Ia supernova called a dynamically driven double-degenerate double-detonation supernova. Despite the apparent abundance of these powerful supernovas, evidence for them and the white dwarfs they fire like bullets remains hard to find. To search for some candidates, the researchers turned to the Gaia star catalog, an ongoing project with the goal of creating the most detailed star map of our galaxy ever made.

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