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 ...

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 ...

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 ...

New Horizons already has sent historic images of the former planet itself and its nearby moon Charon, and the recently demoted ex-planet has not disappointed. There do not appear to be any homegrown ...

Assembled into a seven-frame movie, the new images provide the spacecraft's first extended look at Hydra (identified by a yellow diamond ) and its first-ever view of Nix (orange diamond). Credit: NASA ...

Why are there moons at the edge of the solar system that cause their rotation axes to fluctuate as if ignoring the laws of ...

Pluto, once our most distant planetary sibling in the solar system and now reclassified as one of many “dwarf” cousins, is set to get a lot less mysterious this summer. NASA’s New Horizons spacecraft ...

The study, carried out by Mark R. Showalter of the SETI Institute and Doug Hamilton based at the University of Maryland, reveals that at least two of Pluto’s moons do not have an orderly rotation on ...