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KENNEDY SPACE CENTER, FLA. -- Space Shuttle Discovery is ready on Launch Pad 39A for final launch preparations of STS-92. Scheduled to lift off Oct. 5 at 9:38 p.m. EDT, Discovery will be making the 100th Space Shuttle mission launched from Kennedy Space Center. Discovery also will be making its 28th flight into space, more than any of the other orbiters to date. STS-92 is a mission to the International Space Station, carrying the Z1 truss, which is the first of 10 trusses on the Station, and the third Pressurized Mating Adapter