Hubble Unearths New Moon Around Pluto - Wired News

While Hubble provides only a distant glimpse of Pluto and its moons, NASA&#8217;s New Horizons space probe is currently speeding out to Pluto. The spacecraft should arrive in 2015, when it will take the first detailed photos of the icy dwarf planet system. The discovery of the fifth Pluto moon will help scientists prevent a collision that might destroy New Horizons, which will be zooming by at 30,000 mph.The largest moon of Pluto, Charon, was discovered in 1978 by the United States Naval Observatory station in Flagstaff, Arizona, back when Pluto was still called a planet. The next two moons, Nix and Hydra, weren&#8217;t discovered until 2006, using Hubble. The fourth moon, given the less sexy name P4, was discovered with Hubble in 2011.<br />http://www.wired.com/wiredscience/2012/07/new-pluto-moon/