Astronauts finish repairs to gummed-up joint

Astronauts successfully carried out one last spacewalk Monday, finishing an unprecedented clean and lube job that they began a week ago at the international space station. Spacewalker Stephen Bowen wrapped up work on a jammed solar-wing rotary joint as his partner, Shane Kimbrough, squirted some extra grease as a precaution on another joint that is working fine.

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