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KENNEDY SPACE CENTER, FLA. - At Launch Complex 36-A, Cape Canaveral Air Force Station, the TDRS-J satellite launches aboard an Atlas IIA vehicle on Dec. 4 at the beginning of the launch window at 9:42 p.m. EST. TDRS-J, the third in a series of telemetry satellites, will help replenish the current constellation of geosynchronous TDRS satellites that are the primary source of space-to-ground voice, data and telemetry for the Space Shuttle. The satellites also provide communications with the International Space Station and scientific spacecraft in low-Earth orbit such as the Hubble Space Telescope. This new advanced series of satellites will extend the availability of TDRS communications services until about 2017.