Rusty Schweickart and More from the International Space Development Conference

Lots more from the ISDC, including Apollo astronaut Rusty Schweickart, SpaceX founder Elon Musk, and X Prize Foundation Chair Peter Diamandis. Emily Lakdawalla's Q&A is on when New Horizons will send us better pictures of Pluto than we already have. A new space trivia question of galactic proportions on What's Up, with Bruce Betts and Mat Kaplan.