In this installment of The Universe, we investigate Saturn, asking if its rings are a real celestial phenomenon or merely a cosmic Illusion. Technology allows the experts to get closer to the furthest planet visible to the naked eye. Old questions are answered and new ones arise. Does Saturn hold the key to Earth's weather? Will one of its moons supply us with all the oil we will ever need? Cutting-edge computer graphics are used to show what life would be like on other planets and to imagine what kinds of life forms might evolve in alien atmospheres.

Originally released by A&E Networks, 2007. Streaming video file encoded with permission for digital streaming by Infobase on May 16, 2015.

Hostile Surface (4:18); --Formation of Saturn and Saturn's Rings (5:23); -- Seven Rings of Saturn (4:05); -- Death of the Rings (1:14); -- Saturn's Moons (3:56); -- Storm Alley (3:13); -- Saturn Hexagon (2:18); -- Titan: Saturn's Largest Moon (5:38); -- Titan: Early Earth (2:59); -- Enceladus (4:36); -- Ice on Enceladus (2:57); -- Cassini Probe (3:05); .