Mystery on Enceladus: What Drives Saturn Moon's Icy Plumes?

The famous geysers seen erupting from the surface of Saturn's striped moon Enceladus are a striking visual feature, but a scientific mystery. A new model may finally explain what sustains these eruptions. First spotted by NASA's Cassini spacecraft in 2005, the geysers erupt along Enceladus' "tiger stripes," or fissures, in the icy surface around the moon's south pole.