Cape Canaveral, Fla. • NASA has ordered up a series of urgent spacewalks to fix a broken cooling line at the International Space Station.
Station managers decided Tuesday to send two American astronauts out as soon as possible to replace a pump that contains a bad valve. It's a big job that will require at least two or three spacewalks. The first is scheduled for Saturday.
The spacewalks are taking priority over the launch of a supply ship from Virginia. The delivery had been scheduled for this week, but is now delayed until January.