Co-Founder and Executive Director Emeritus, The Planetary Society
The recently-retired founding Executive Director of the Planetary Society returned from the first Moscow Symposium on Solar System Exploration with cautious optimism. Emily Lakdawalla is ready for EPOXI's encounter with comet Hartley 2. Bill Nye rolls across the USA, talking up space and science. Planets and fish tacos are on the menu for this week's What's Up, along with a new space trivia contest and the chance to win Wonders of the Solar System.