You probably remember the confirmation of Pluto's two new moons back in February this year. At the time the moons were confirmed they went under the imaginative names S/2005 P 1 and S/2005 P 2. Now the have been given 'proper' names. The inner moon is called Nix and the other moon Hydra.
Image Credit: NASA/ESA/HST
On the subject of Pluto and following my post the other day on what is a planet, it's worth noting that the BBC Horizon programme tomorrow night (BBC2 : 2100hrs) is covering the debate over what the definition of planet is. The programme is provocatively titled "Bye Bye Pluto". Thanks to Stuart for pointing that out for us.