Saturn's Restless Rings: Latest Results from the Cassini Mission

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NASA's Cassini spacecraft has entered its fifth year exploring the planet Saturn, its rings, and its moons. Dr. Mark Showalter (SETI Institute), a key member of the Cassini science team, shares some of the marvelous results from Saturn and recent discoveries from the mission. His special focus is Saturn's complex and beautiful ring system (which shows a variety of surprising phenomena, including "jets", "propellers", "wisps", "spokes", and "braids") and the remarkable interactions between Saturn's rings and moons. Recorded November 12, 2008.