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STS-94 Payload Commander Janice Voss prepares to enter the Space Shuttle Columbia at Launch Pad 39A in preparation for launch. She has flown on STS-83, STS-63 and STS-57. Voss holds a doctorate degree in aeronautics/astronautics from the Massachusetts Institute of Technology and has earned two NASA Space Flight Medals. As Payload Commander and a member of the Blue team, Voss will have overall responsibility for the operation of all of the MSL-1 experiments. During the experimentation phase of the mission, she be working primarily with three combustion experiments. She and six fellow crew members will lift off during a launch window that opens at 1:50 p.m. EDT, July 1. The launch window will open 47 minutes early to improve the opportunity to lift off before Florida summer rain showers reach the space center