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Charon NASA New Horizons Pluto

Pluto’s size measured

13 Jul, 2015

NASA’s New Horizon mission scientists determine Pluto’s size to be 2,370 kilometers (1,473 miles) in diameter making it the largest known body beyond Neptune.

The size of Pluto has been debated since its discovery in 1930. We are excited to finally lay this question to rest.

They also determine Charon’s size to be 1208 km (751 miles) in diameter, Hydra is about at 45 km (30 miles) and Nix is about 35 km (20 miles).