The SETI Institute is about much more than the Search for Extraterrestrial Intelligence. President and CEO Bill Diamond of the Institute explains. Bill Nye reviews two more stories that illustrate how hard it is to go to Mars. Join the Rocket Road Trip with our special audio preview of this new Planetary Society video series. And you might win “Xtronaut: The Game of Solar System Exploration,” in this week’s What’s Up space trivia contest. Emily Lakdawalla has the week off.