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KENNEDY SPACE CENTER, FLA. -- At Launch Pad 39A, space shuttle Discovery's payload bay doors slowly enclose the U.S. Node 2 module, named Harmony. The name was chosen from an academic competition involving more than 2,200 U. S. students in kindergarten through high school. The module will be delivered to the International Space Station aboard Discovery on the 14-day STS-120 mission. An orbiter's payload bay door closure at the pad is a milestone signaling that the launch date is near. Discovery's launch is targeted for Oct. 23 at 11:38 a.m. EDT. Photo credit: NASA/George Shelton