Discovery

Discovery

Space Shuttle Discovery Commander Pamela A. Melroy, waves as she and the crew exit the Operations and Check out building at the Kennedy Space Center, Fla. Tuesday Oct. 23, 2007. Next to her is Pilot George D. Zamka. In the center is Mission Specialist Stephanie Wilson; the third row: Space Engineer, Daniel Tani, left and Mission specialist Douglas Wheelock; in the back row: astronauts Scott Parazynski, left and European Space Agency astronaut Paolo Nespoli. Discovery is scheduled to lift off Tuesday, on a mission to the International Space Station. The crew will deliver an Italian built line-in compartment and are scheduled to perform five spacewalks. (AP Photo/Marta Lavandier)