Closing In On An Interplanetary Mystery: The Pioneer Anomaly

JPL Senior Research Scientist John Anderson updates the Pioneer Anomaly casebook, and reports that there may be one more attempt to contact the thirty-four year old Pioneer 10 next month. Will it help us understand why the spacecraft isn't where it's supposed to be? Emily Lakdawalla explores the Kuiper belt with the New Horizons probe, and Bruce Betts has another Explorer's Guide to Mars Poster to give away for the space trivia contest on What's Up!