Charon is the largest moon of the dwarf planet Pluto, located in the Kuiper Belt. Discovered in 1978, it is about half the size of Pluto and is unique because it is tidally locked, meaning the same side always faces its parent planet. This creates a fascinating dynamic between the two celestial bodies, as they orbit a common center of mass outside of Pluto. Charon has a surface covered in water ice and is believed to have a thin atmosphere. Its geological features include canyons and possible cryovolcanoes, making it an intriguing subject of study in planetary science and astronomy.