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June 1, 2011
Fred W. Leslie, payload specialist, working out of NASA's Marshall Space Flight Center (MSFC), in Alabama, grabs a support bar on a science workstation rack after floating from the Space Shuttle Columbia's cabin into the science module. Leslie is one of seven crewmembers in the midst of a 16-day multi-faceted mission aboard Columbia. For the next week and a half, Leslie and the rest of the crew will continue working in shifts around the clock on a diverse assortment of United States Microgravity Laboratory (USML-2) experiments located in the science module. Fields of study include fluid physics, materials science, biotechnology, combustion science and commercial space processing technologies. The frame was exposed with an Electronic Still Camera (ESC).

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