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Image description: Spacewalker Mike Fossum rides on the International Space Station’s robotic arm as he carries the Robotic Refueling Mission experiment. This the final scheduled spacewalk during the Atlantis shuttle mission.
Photo by NASA

Image description: Spacewalker Mike Fossum rides on the International Space Station’s robotic arm as he carries the Robotic Refueling Mission experiment. This the final scheduled spacewalk during the Atlantis shuttle mission.

Photo by NASA

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