Two days ago, astronauts on the ISS discovered some little white flakes suspiciously floating away from the station
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The goal of the jaunt is to fix the liquid ammonia cooling system needed to power one of the station's solar arrays. It's not a life or death situation fortunately, but it's a big enough deal to get to astronauts out to fix it, pronto.
So far, mission control has been painstakingly walking astronauts Chris Cassidy and Tom Marshburn through the process step by step by step by step, since there was no time to really brief them on the walk beforehand
Update: Just 2.5 hours in and the busted pump has been successfully replaced.
~2.5 hrs into #ISS #Exp35 #spacewalk @astromarshburn & Chris Cassidy have remove & replaced pump. Watch live: nasa.gov/ntv
? NASA (@NASA) May 11, 2013
Update 2: The pump is up and running, and now pumping ammonia. So far, everything's going fine, but we won't know if everything is definitely fixed for sure until its had a chance to work for a while.
Update 3: The astronauts are undergoing a "bake-out" and letting the sun get any excess ammonia off them before they head back inside.
Update 4: They're headed back towards the airlock now.
Update 5: Looks like mission accomplished; everyone is back inside.
#ISS #Exp35 #spacewalk done at 2:14p ET. All required tasks complete. @astromarshburn & Chris Cassidy are back in #ISS after 6.5 hrs outside
? NASA (@NASA) May 11, 2013
Source: http://gizmodo.com/watch-nasas-emergency-iss-spacewalk-live-right-now-501627379
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