Saving the Planet: The Apophis Mission Design Competition

Special coverage of the conclusion of The Planetary Society's international competition to design a mission that would tag" asteroid and near-Earth object Apophis. Bill Nye the Science Guy is excited about the newly-revealed 'Flyby Anomaly.' Emily Lakdawalla explains the very strange river beds on Mars while Bruce Betts and Mat Kaplan turn the night sky into a laughing matter on What's Up! Another chance to win a Planetary Radio t-shirt in our new space trivia contest.