Pluto
Videos
Pluto is a dwarf planet in the Kuiper belt, a ring of bodies beyond the orbit of Neptune. It is the ninth-largest and tenth-most-massive known object to directly orbit the Sun. It is the largest known
Clyde Tombaugh, in Kansas
Sputnik Planitia is covered with churning nitrogen ice "cells" that are geologically young and turning over due to convection.
A multispectral Visual Imaging Camera image of Pluto in enhanced color to bring out differences in surface composition
Regions where water ice has been detected (blue regions)
Charon (moon)
Videos
Charon, formal designation Pluto I, is the largest of the five known natural satellites of the dwarf planet Pluto. It has a mean radius of 606 km. Charon is a planetary-mass moon and the sixth-largest
Pluto
…orbit periodically brings it closer to the Sun than Neptune, but a stable orbital resonance prevents them from colliding. Pluto has five known moons: Charon (the largest and the diameter of which is just over half that of Pluto), Styx, Nix, Kerberos, and Hydra. Pluto and Charon are sometimes considered a…
Charon's discovery at the Naval Observatory Flagstaff Station as a time-varying bulge on the image of Pluto (seen near the top at left, but absent on the right). Negative image.
Size comparisons: Earth, the Moon, and Charon
Comparison between Pluto's Sputnik Planitia and Charon's informally named Vulcan Planitia
Charon's night side seen by New Horizons