Lightsail Update and Haute Cuisine in Space

We kick off the holidays by checking in with Bill Nye on the status of the Society's LightSail solar sail project. Then we find out what will be served for Christmas dinner on the International Space Station as we talk with ISS astronaut Sandy Magnus and NASA food scientist Vickie Kloeris. Emily Lakdawalla reveals a lake on Saturn's moon Titan along with the triumph and tragedy of Mars rover Spirit. Bruce Betts tells Mat Kaplan there is a lot to see in the winter night sky as they give away another Mars Hugg-a-Planet in this week's trivia contest.