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KENNEDY SPACE CENTER, FLA. -- On Launch Pad 39A, space shuttle Atlantis' payload bay doors are ready for closing. Seen here is the Columbus Laboratory. Atlantis is being secured for launch on Dec. 6 on mission STS-122 to the International Space Station. The Columbus laboratory module, built by the European Space Agency, is approximately 23 feet long and 15 feet wide, allowing it to hold 10 large racks of experiments. The carrier holds three elements: a nitrogen tank assembly that is part of the external active thermal control system on the International Space Station, the European Technolo…
