Saturn's Tug Controls Enceladus' Icy Geysers

Saturn is often called the most beautiful planet because of its striking rings, but its myriad moons also fascinate and inspire scientists. Now scientists know how the ringed world controls the impressive ice geysers on one if its moons, Enceladus. In 2005, the Cassini probe discovered plumes of water jetting out of the south pole of Enceladus, making the tiny moon (about 300 miles wide) one of the few destinations in the solar system with observed geological activity. Though astronomers