Spacewalk over ahead of schedule

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Associated Press

CAPE CANAVERAL, Fla. - Two spacewalking astronauts are back inside the International Space Station after wrapping up their first repair mission ahead of schedule.
   
Rick Mastracchio called it "an early Christmas" when he and Michael Hopkins successfully pulled out an ammonia pump with a bad valve - a task that had been planned for a spacewalk on Monday.
   
They considered staying out longer in hopes of making even more progress, but Mastracchio was feeling cold and uncomfortable and asked to call it a day.
   

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