Friday 9 October 2015

Pluto's Small Moons Nix and Hydra

OUTER PLANETS
Pluto's Small Moons Nix and Hydra
Boulder CO (SPX) Oct 09, 2015 - This week's beautiful Charon images remind us that Pluto is not just one body; it's a whole system of worlds. Pluto and its largest moon Charon dance around each other, making circles around their common center of mass, which lies in an empty space between them. Around the dancing couple are four small moons. In order of increasing distance, their names are Styx (just beyond Charon), then Nix, Kerberos and Hydra. These tiny moons also orbit around the system's center of mass. ... more


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