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.
Object Names: Pluto, Charon, Nix, Hydra
Image Type: Astronomical
To access available information and downloadable versions of images in this news release, click on any of the images below: