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Photo Gallery: Solar System

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Once classified as a true planet, icy Pluto is now considered one of the more than 40 dwarf planets in our solar system. Seen here with its three known moons, Charon, Nix, and Hydra, Pluto is a member of a group of objects that orbit in a disklike zone beyond the orbit of Neptune called the Kuiper belt. Photograph courtesy NASA/ESA/H. Weaver (JHU/APL)/A. Stern (SwRI)/HST Pluto Companion Search Team