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Astronauts Joseph Acaba, left, and Steve Swanson, both mission specialists, are pictured near the robotic workstation in Destiny, the U.S. laboratory, within 24 hours of beginning their mission's second spacewalk, which they completed Saturday.

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Tease photo

Discovery mission has 2nd spacewalk

Astronauts took another spacewalk at the International Space Station on Saturday, this time to lighten the workload for future crews.


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