In late 2005, astronomers announced the discovery of two new moons orbiting tiny Pluto — these in addition to the existing satellite Charon. The two new moons are both minuscule, just tens of kilometres across, far smaller than Pluto and Charon themselves, and the entire system is probably the result of a titanic, planet-blasting collision in the deep past. In this image we see Pluto and Charon from the surface of the outermost new moon, called Hydra. Nix, the innermost small moon, is also in view — a tiny dot off to the right.