Dipak Srinivasan of the Applied Physics Laboratory at Johns Hopkins University played a pivotal role in the New Horizons mission whose probe just passed by Pluto, and since he was also Andy's roommate back in their college days he was kind enough to talk with Andy and Matt about his work on the project. Launched in 2006, New Horizons traveled over three billion miles to gather the most comprehensive data about Pluto that mankind has ever seen, including stunning imagery of mountains and frozen plains, and en route it got a boost by slingshotting around Jupiter, becoming the fastest-moving probe in history. Dipak also gives the inside scoop on other projects he's been involved in, including the MESSENGER Mercury orbiter and the upcoming Solar Probe Plus mission to scrape the surface of the Sun. For more detailed information on New Horizons, visit the Johns Hopkins APL New Horizons official site.