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2010-04-15 15:33:32

During the STS-131 mission's first spacewalk, which lasted about 6.5 hours, NASA astronaut Rick Mastracchio helped move a new 1,700-pound ammonia tank from space shuttle Discovery's cargo bay to a temporary parking place on the station, retrieved an experiment from the Japanese Kibo Laboratory exposed facility and replaced a Rate Gyro Assembly on one of the truss segments.

Image uploaded by David Silverberg
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