Universe & space

Discovery of Praxidike

23 November 2000

Praxidike is an irregular outer moon of Jupiter, about seven kilometres across, discovered in November 2000 by a team led by Scott Sheppard at the University of Hawaii. It travels on a distant orbit in the retrograde direction, opposite to Jupiter's rotation, and belongs to the Ananke group, a family of moons that are thought to be fragments of a larger body captured by Jupiter and broken up in collisions. It is one of the larger members of the group. The moon received its permanent name in 2002, after Praxidike, a Greek goddess of just punishment, in keeping with the tradition of naming Jupiter's moons after figures connected with Zeus.

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