(6 Nov 2015) NASA's one-year spaceman, Scott Kelly, ventured back outside the International Space Station on Friday morning for some radiator work.
It was the second spacewalk in one-and-a-half weeks for Kelly, who's more than halfway through a US record-setting year-long flight, and fellow American astronaut Kjell Lindgren.
Friday's excursion involved work on the space station's cooling system.
The spacewalkers needed to undo jury-rigged repairs made to a leaky cooling line three years ago.
The ammonia leak subsequently was fixed another way - by replacing a failed pump - so NASA wanted the system back in its original setup.
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