nal forces to keep the ring in place, while Satellite 15, located just outside the large A-ring, likewise may help keep that ring in place.The inner moons Mimas, Tethys, Dione, and Rhea all have heavily cratered surfaces like those of the Moon and Mercury, although Saturns moons are composed largely of water and ice. This shows that meteorite bombardment, even as far out as Saturn, has been a major process in shaping the solar system. Mimas is marked by a huge impact crater called Herschel that is fully one-fourth the diameter of Mimas itself. This crater makes Mimas look like a staring eyeball, giving it the nickname Death Star. The impact that formed it was almost intense enough to blast Mimas into fragments. This moon is the innermost of Saturns large moons, orbiting outside the rings of its parent planet. Herschek is 140 kilometers (90 miles) across and 10 kilometers (6 miles) deep. It is one of the largest craters, with respect to planetary diameter, in the solar system (Great Space Place).Enceladus, another of Saturns moons, is located in the center of this planets E-ring. The tiny droplets of frozen water that make up the E-ring have coated the surface of Enceladus and made it the most reflective moon in the solar system. Heavily cratered areas are cut by linear grooves and relatively smooth, cratered regions. Tidal forces may be generating the internal energy necessary to drive the faulting and volcanism observed on Enceladus. In fact, ice particles in the E-ring may be produces by active water volcanism on this moon. Titan is the largest moon of Saturn, and the second largest moon in the solar system, after Ganymede. Titan is unique in the solar system - it is the only satellite with its own rich atmosphere of nitrogen, more like Earths atmosphere than any other world. Traces of methane and other hydrocarbons (the building blocks of life) have also been detected. Like Venus, the thick atmosphere of Titan completel...
