When the Huygens space probe landed on Titan, Saturn’s largest moon, on January 14th the world watched in awe. Living on Earth invited Neil deGrasse Tyson, the director of New York’s Hayden Planetarium, to talk about the mission. Tyson tells guest host Bruce Gellerman about Titan’s unusual features, what we didn’t learn from Huygen’s data, and why the government is shifting its priorities for space exploration.