Cassini at Weird Iapetus

The Cassini spacecraft made its one and only close flyby of Saturn's moon Iapetus last week. It confirmed that the black and white sphere is one of the strangest bodies in the solar system. Imaging team associate Tilmann Denk of the Free University of Berlin provides background and comment. Emily Lakdawalla predicts a frigid death for the Phoenix Mars Lander...after it has done its job, while Bruce Betts and Mat Kaplan are victims of a rover run over in this week's What's Up, though they still deliver a new space trivia contest.