Nix and Hydra Compared to Denver

The approximate sizes of Pluto's moons Nix and Hydra compared to Denver, Colorado.
CreditJHUAPL/Google
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The approximate sizes of Pluto's moons Nix and Hydra compared to Denver, Colorado. While Nix and Hydra are illustrated as circles in this diagram, mission scientists anticipate that future observations by New Horizons will show that they are irregular in shape.