Pluto and Its Moons: Charon, Nix, and Hydra
Pluto and Its Moons: Charon, Nix, and Hydra
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Fast Facts
News release ID: STScI-2006-29
Release Date: Jun 22, 2006
Image Use: Copyright
About this image

A pair of small moons that NASA's Hubble Space Telescope discovered orbiting Pluto now have official names: Nix and Hydra. Photographed by Hubble in 2005, Nix and Hydra are roughly 5,000 times fainter than Pluto and are about two to three times farther from Pluto than its large moon, Charon, which was discovered in 1978.

Astronomical, Hubble Telescope, Illustrations, Kuiper Belt Objects, Moons, Pluto, Solar System


Credit: NASA, ESA, H. Weaver (JHU/APL), A. Stern (SwRI), and the HST Pluto Companion Search Team