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KENNEDY SPACE CENTER, FLA. -- At NASA's Kennedy Space Center, members of the STS-122 crew arrive for launch. From left are Mission Specialists Leopold Eyharts, Stanley Love, Hans Schlegel, Rex Walheim and Leland Melvin. They were greeted by Doug Lyons (left, yellow shirt), launch director for the mission, and Pete Nickolenko (right, green shirt), lead shuttle test director. Eyharts and Schlegel represent the European Space Agency. The crew's arrival signals the imminent launch of space shuttle Atlantis' STS-122 mission, at 2:45 p.m. Feb. 7. This will be the third launch attempt for the mission. Some of the tank's ECO sensors gave failed readings during propellant tanking for launch attempts on Dec. 6 and Dec. 9, subsequently scrubbing further attempts until the cause could be found and repairs made. Atlantis will carry the Columbus module, Europe's largest contribution to the construction of the International Space Station. It will support scientific and technological research in a microgravity environment. Columbus is a multifunctional, pressurized laboratory that will be permanently attached to the Harmony module of the space station to carry out experiments in materials science, fluid physics and biosciences, as well as to perform a number of technological applications. Photo credit: NASA/Kim Shiflett