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KENNEDY SPACE CENTER, FLA. -- United Space Alliance workers move away from space shuttle Discovery after checking the sling before the vehicle's lift into high bay 1. In the bay, Discovery will be mated with the external tank and solid rocket boosters waiting on the mobile launcher platform. Discovery is targeted for launch to the International Space Station for mission STS-120 on Oct. 23. The crew will be delivering and installing the Italian-built U.S. Node 2, named Harmony. The pressurized module will act as an internal connecting port and passageway to additional international science labs and cargo spacecraft. In addition to increasing the living and working space inside the station, it also will serve as a work platform outside for the station's robotic arm. Photo credit: NASA/Charisse Nahser