Well hey there, little moons! In the home stretch of a 9.5-year journey, NASA’s New Horizons mission has caught two of Pluto’s lunar companions on camera as they circle around the dwarf planet. The ...

These images from ’05, taken by the Advanced Camera for Surveys, reveal Pluto, its large moon Charon, Nix and Hydra (Image Credit: NASA/JPL) Of course they’ve always been real worlds. They just never ...

The names Nix and Hydra have been approved for the two small satellites of Pluto discovered in May 2005. The International Astronomical Union (IAU), the internationally recognized authority for ...

While Pluto’s largest moon Charon has grabbed most of the lunar spotlight, two of Pluto’s smaller and lesser-known satellites are starting to come into focus via new images from the New Horizons ...

The International Astronomical Union has officially christened Pluto's two newest moons Nix and Hydra. The tiny satellites were discovered by the Hubble Space Telescope last May and are believed to ...

In June 2005, two small moons were discovered orbiting Pluto, much farther out than its larger moon, Charon.For a year, the discovery team, led by planetary astronomer Alan Stern of the Southwest ...

Pluto's outermost stellar companion, Hydra, is coated in nearly pure water ice, a new analysis found. The recent finding was derived from the new and first compositional data taken by NASA's New ...