This is another of Saturn’s moons, Enceladus, in eclipse. Enceladus is of great interest to scientists because it “could be a place where primitive life forms might evolve.” It shoots off an icy plume, and may hold heat, organic chemicals and liquid water. This image, taken by the Cassini spacecraft on Oct. 9, 2008, shows the view of the moon’s south pole. Launched in 1997, the Cassini spacecraft has been exploring the Saturn system for the past several years. Cassini completed its initial four-year mission in 2008. Due to its great, on-going success, NASA has extended the mission through September 2017.