New Moon

Pluto, everyone's favorite Kuiper Belt object, has yet another moon...

Discovered by most people's favorite space telescope - the Hubble, P4 joins Nix, Hydra, and Charon as moons of the former planet Pluto.  The Hubble picked out the new moon (which is estimated to be 8-21 miles in diameter) from four billion miles away.  There is every chance that our New Horizons robot explorer will discover more moons, or even rings, as it approaches and then passes through the Pluto-Charon system four years from now.  Stay tuned!