Faithful Geysers

Geysers of ice and liquid water shoot into space from around the south pole of Enceladus, a moon of Saturn, in this image from the Cassini spacecraft. The geysers squirt into space from cracks on the surface, and may be driven by pools of warm water and ice below the surface. Their power source is more than twice as strong as the one that drives the geysers and other geothermal features at Yellowstone National Park. [NASA/JPL/SSI]