Last updated on April 19, 2014 at 18:42 EDT
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June 6, 2011
Astronaut Kevin R. Kregel, mission commander, works with a sample of plants on the Space Shuttle Columbia's mid-deck during flight day 4 activities. The plants are called Brassica Rapa and are part of the Collaborative Ukrainian Experiment (CUE). Refer to one of the flight day 2 photos for a close-up view of this experiment.