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KENNEDY SPACE CENTER, Fla. -- Space Shuttle Discovery waits in the Vehicle Assembly Building for an early morning rollout to Launch Pad 39A. Discovery sits on top of the mobile launcher platform, which in turn rests on top of the crawler-transporter that will carry it to the pad. Discovery is scheduled to launch Oct. 5 at 9:30 p.m. EDT on mission STS-92. Making the 100th Space Shuttle mission launched from Kennedy Space Center, Discovery will carry two pieces of hardware for the International Space Station, the Z1 truss, which is the cornerstone truss of the Station, and the third Pressurized Mating Adapter. Discovery also will be making its 28th flight into space, more than any of the other orbiters to date