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KENNEDY SPACE CENTER, FLA. -- The STS-120 crew strides out of the Operations and Checkout Building at NASA's Kennedy Space Center after suiting up for launch aboard space shuttle Discovery to the International Space Station. Leading the way, on the right, is Commander Pamela Melroy, followed by Mission Specialists Doug LWheelock and Paolo Nespoli, who represents the European Space Agency. On the left is Pilot George Zamka, followed by Mission Specialists Stephanie Wilson, Daniel Tani and Scott Parazynski. Tani will remain on the International Space Station to join the Expedition 16 crew after the mission is complete. The crew is heading for the Astrovan that will take them to Launch Pad 39A. Discovery is scheduled for liftoff at 11:38 a.m. EDT. The mission will be the 23rd assembly flight to the space station and the 34th flight for Discovery. Payload on the mission is the Italian-built U.S. Node 2, called Harmony. During the 14-day mission, the crew will install Harmony and move the P6 solar arrays to their permanent position and deploy them. Discovery is expected to complete its mission and return home at 4:47 a.m. EST on Nov. 6. Photo credit: NASA/Kim Shiflett