sciencehabit writes: A few months ago, when William Shatner, the actor who played Star Trek's Captain Kirk, heard that scientists were asking people to vote on names for Pluto's fourth and fifth moons, he lobbied that one satellite be called Vulcan, the home planet of Mr. Spock—and the name came out on top, far surpassing all others in the voting. Today, however, scientists announced that the moons will instead bear names that better reflect Pluto's role in mythology as the god of the underworld. One satellite will be christened Kerberos, for Pluto's three-headed dog, and the other Styx, for the river dividing the world of the living from the underworld. Kerberos is the Greek name for Cerberus, which placed number two in the voting, while Styx came in third. Why not Vulcan? Astronomers once used that name for what turned out to be a nonexistent planet inside Mercury's orbit, and its connection to the mythological Pluto was tenuous; so rejecting the name was—as Mr. Spock might say—the logical thing to do.
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