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Astronauts Try to Fix Leak

They replace ammonia pump outside space station
By John Johnson,  Newser Staff
Posted May 11, 2013 12:11 PM CDT
Astronauts Try to Fix Leak
In this image made from video provided by NASA, astronaut Christopher Cassidy, foreground, holds a power wrench as he stows away a suspect coolant pump on the International Space Station.   (AP Photo/NASA)

(Newser) – So far, so good. Two astronauts replaced an ammonia pump outside the International Space Station today, and early signs suggest that the move may have fixed a potentially dangerous leak, reports AP. Christopher Cassidy and Thomas Marshburn didn't spot any obvious signs of trouble, but no new leaks have been spotted since they replaced the pump. Small "snowflakes" of frozen ammonia were seen floating near the device earlier this week, and the astronauts' two-day turnaround for a spacewalk might be the fastest ever, reports NBC News. NASA will keep checking for leaks before declaring the problem fixed. (Read more International Space Station stories.)

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