Distance from Sun: 3,666,000,000 miles

Diameter: 1,423 miles or about 1/5 the diameter of the Earth

Number of moons: 1

Length of a year: 90,800 Earth days (about 249 Earth years)

Temperature: ~-365°F

Pluto is a ball of frozen gas, possibly with a rocky core. This drawing shows what the surface may be like.

Pluto lost its planet status in 2006 and was classified as a dwarf planet. It is one of the largest members of a class of icy spheres known as Kuiper Belt Objects. Pluto's moon, Charon, is almost as big as Pluto.

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