Shuttle Crew Wraps Up Second Spacewalk at Station

Discovery astronauts wrapped up a six-hour, 14-minute spacewalk Wednesday, draining ammonia from an 800-pound pump module, working with the Canadian robotic device Dextre and completing a variety of other tasks.

The spacewalkers, Mission Specialists Steve Bowen and Alvin Drew, spent most of their time outside the International Space Station working separately. The start of the spacewalk, which began when the crew members switched their spacesuits to battery power at 10:42 a.m. EST, had been  [...]

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