Examining the Vision for Space Exploration: A Workshop Preview

Planetary Society Executive Director Louis Friedman previews a gathering at Stanford University that will examine the Vision for Space Exploration offered by President George W. Bush four years ago. Bill Nye the Science Guy ponders the clouds in the Martian Sky, while Emily Lakdawalla's Q&A names names on Mercury. Bruce Betts rendezvous with Mat Kaplan for another edition of What's Up, featuring a new space trivia contest.