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rogue star

  1. A star that has escaped the grav3itational pull of its host galaxy and is moving freely in, or toward, the intergalactic void. A star that has acquired a sufficiently high velocity to break free from the galaxy in which it for3med is called a hypervelocity star. Several such stars have been found in our own Milky Way Galaxy.

  2. More generally, any star that is in an unusual location or state of motion.

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