... Demise of large satellite may have led to the formation of Saturn's rings and inner moons . ... Simulations performed at Southwest Research Institute (SwRI) in Boulder, Colorado, may explain how Saturn's majestic rings and icy inner moons formed following the collision of a Titan-sized satellite with the planet. ... The new theory links the formation of the rings to the formation of Saturn's satellites. ... Saturnт??s surface at the time of ring formation was larger than this, probably at about 1...