I have been teaching my Astro 101 course about the moons of Jupiter and found this very nice NASA video. The possibility of oceans on moons orbiting giant planets has revolutionized the idea of habitable zones and the search for life.
This proposed mission is slated for 2020 launch. Lets keep our fingers crossed the government shut down doesn't last until then and NASA is still around. Copyright 2011 National Public Radio. To see more, visit http://www.npr.org/.