Pluto, Charon (just below and to the right of Pluto), and the tiny moons Nix and Hydra were imaged by the Hubble Space Telescope.

Pluto in Brief
Tiny, cold and incredibly distant, Pluto was discovered in 1930 and long considered to be the ninth planet. But after the discoveries of similar intriguing worlds even farther out, Pluto was reclassified as a dwarf planet. This new class of worlds may offer some of the best evidence of the origins of our solar system.

Featured Mission: New Horizons
NASA's New Horizons will be the first spacecraft to visit Pluto and the Kuiper Belt. The spacecraft's 9 and a half year journey to the ice dwarf began in January 2006. The spacecraft will reach Pluto in 2015.

Read More About Pluto