Discover interesting information about the planet Pluto through a vast archive of photographs and scientific facts.

Until the discovery of Eris, Pluto was known as the largest Keiper belt object. This dwarf planet has replaced Pluto in size and is accompanied by a satellite that has been given the name Dysnomia. Learn about this distant world here...

Learn fun facts and details about the atmosphere, geography, composition, and discovery of Pluto, a dwarf planet.

Read about some of the most important space discoveries in recent times.