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KENNEDY SPACE CENTER, FLA. -- In the firing room at the Launch Control Center, Kennedy Space Center Director Jim Kennedy (with microphone) congratulates the team for successful second launch attempt of Space Shuttle Discovery on mission STS-116. Liftoff occurred on time at 8:47 p.m. EST. Others in the room are (left to right), Deputy Director Bill Parsons, External Relations Director Lisa Malone, NASA Flow Director for Discovery Stephanie Stilson, Shuttle Launch Director Mike Leinbach, Associate Administrator for Space Operations Mission William Gerstenmaier and NASA Administrator Mike Griffin. The first launch attempt on Dec. 7 was postponed due a low cloud ceiling over Kennedy Space Center. This is Discovery's 33rd mission and the first night launch since 2002. The 20th shuttle mission to the International Space Station, STS-116 carries another truss segment, P5. It will serve as a spacer, mated to the P4 truss that was attached in September. After installing the P5, the crew will reconfigure and redistribute the power generated by two pairs of U.S. solar arrays. Landing is expected Dec. 21 at KSC. Photo credit: NASA/Kim Shiflett