In the Space Station Processing Facility is moved toward the waiting payload canister at right.

In the Space Station Processing Facility, the U.S. Node 2 module, known as Harmony, is moved toward the waiting payload canister, at right. The canister will deliver Harmony to Launch Pad 39A for installation into space shuttle Discovery's payload bay. The Italian-built module is about 21 feet long and 14 feet in diameter. 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. Harmony will be installed on the station during mission STS-120, targeted to launch Oct. 23. Photo credit: NASA/Amanda Diller