enceladus

On Saturday, the Cassini spacecraft conducted a flyby of Saturn's sixth-largest moon, Enceladus, snapping some rather breathtaking photos along the way. The flyby, whose purpose was to gather the highest-resolution photos ever of the moon's southern polar region and to thermally map the "tiger stripe" terrain there, gathered some stunning images including some of the geyser-like plumes Cassini discovered on the moon's surface during previous flybys.

This week, new photos of our moon taken by NASA's Lunar Reconnaissance Orbiter showed what we already know: the orbiting rock has a lot of craters, but no signs of life. But scientists at the Max Planck Institute for Nuclear Physics in Heidelberg, Germany have revealed new findings that there is another moon worthy of intensive exploration -- and perhaps even a visit at some future date.

Beneath the central Antarctic ice sheet lies Lake Vostok -- a frozen freshwater lake about the size of Lake Ontario, with depths up to 650 feet. Now, scientists believe that Saturn's icy moon Enceladus may harbor a similar underground reservoir.