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NASA astronauts finished up this month’s trio of spacewalks with a nearly seven-hour-long outing today — highlighted by the installation of a new HD camera on the International Space Station’s exterior, plus the replacement of a faulty camera-light assembly on the end of the station’s robotic arm. After the robotic arm’s “hand” was replaced on Oct. 5, NASA noticed that the camera-light assembly wasn’t focusing properly, which prompted the replacement. Spacewalkers Randy Bresnik and crewmate Joe Acaba also took care of some get-ahead tasks.

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