Jut Wynne in the Caves of the Atacama

USGS Speleologist J. Judson Wynne joins us via Iridium satellite phone as he prepares to enter another cave in the Mars-like Chilean desert. Bill Nye the Science Guy dips his toe in the lakes of Titan for this week's commentary, while Emily Lakdawalla says 'E' is for asteroid, or at least some of them. Jupiter continues to shine bright and clear in the What's Up night sky according to Bruce Betts, who joins Mat in a new space trivia contest.