(Los Angeles-AP) June 21, 2006 - The newest kids in the solar system now have proper names: Nix and Hydra. The pair of moons orbiting Pluto were officially christened last week by the International ...

Among the quirky characteristics of this distant dwarf planet are its moons and the way they orbit Pluto – or to be more ...

NASA’sNew Horizons spacecraft has delivered extraordinary video footage showing towering ice mountains on Pluto’s moon Nix. These ice peaks, some rising as high as 11,000 feet, are made of pure water ...

Planets, moons and other celestial bodies are named according to rules established by the International Astronomical Union (IAU). Pluto did not have any rules for naming surface features because, ...