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"NASA officials hustled Friday to finish planning a riskier-than-usual spacewalk to save a ripped solar wing at the international space station.
The agency hopes to send veteran spacewalker Scott Parazynski to conduct the repairs on Saturday.
It will be a difficult and potentially dangerous mission for Parazynski, who runs the risk of being shocked as he tries to fix the damaged panel.
Parazynski also will be farther from the safety of the station than NASA would like, upping the ante for problems such as glove tears or spacesuit malfunctions.
The safety concerns led the space agency to delay the outing a day to give experts on the ground more time to analyze every detail. Astronauts aboard the linked shuttle-station complex were spending Friday studying the plans and preparing equipment."