Michael Mumma directs the Goddard Center for Astrobiology. A team he leads recently announced three plumes of methane on Mars. We talk with him about how they were discovered, and what they might mean. Bill Nye cheers on Japan's Hayabusa asteroid probe. Emily Lakdawalla answers a question about Venus. Bruce Betts and Mat Kaplan annihilate some antimatter and give away a 2009 Year in Space calendar on the What's Up space trivia contest.