Prince Philip Visits NASA's Goddard Space Flight Center

Prince Philip tours Goddard Space Flight Center in Greenbelt, Maryland. Astronauts John Grunsfeld and Mike Massimino explain the Power Control Unit training simulator that was used for Servicing Mission 3B. NASA and the British National Space Centre have collaborated on the Hubble project. The royal couple's appearance was one of the last stops on a six-day visit to the United States.