Astronauts of space shuttle Discovery from left, Pilot George Zamka, Commander Pamela Melroy, mission specialists Scott Parazynski, Stephanie Wilson, Douglas Wheelock, European Space Agency astronaut Paolo Nespoli of Italy and mission specialist Daniel Tani trade high fives after their arrival at the landing facility at the Kennedy Space Center in Cape Canaveral, Fla., Friday, Oct. 19, 2007. Credit: AP PHOTO/ John Raoux.
