Last updated on April 24, 2014 at 11:50 EDT
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June 3, 2011
Astronaut Susan L. Still, pilot, goes over a checklist at the control panel on the aft flight deck of the Earth-orbiting Space Shuttle Columbia. Scheduled originally as a 16-day mission, the Microgravity Sciences Laboratory (MSL-1) flight completed about one-fourth of its manifest time frame prior to being cut short by a power shortage.