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Image: Mastracchio During STS-131 EVA 2

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Description: NASA astronaut Rick Mastracchio, STS-131 mission specialist, participates in the mission's second session of extravehicular activity (EVA) as construction and maintenance continue on the International Space Station. During the seven-hour, 26-minute space-walk, Mastracchio and astronaut Clayton Anderson (out of frame), mission specialist, unhooked and removed the depleted ammonia tank and installed a 1,700-pound ammonia tank on the station's Starboard 1 truss, completing the second of a three-space-walk coolant tank replacement process.
Title: Mastracchio During STS-131 EVA 2
Credit: STS-131 Shuttle Mission Imagery
Author: NASA
Usage Terms: Public domain
License: Public domain
Attribution Required?: No

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