US astronauts step out on spacewalk

2015-11-06 17:21
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Miami - Two US astronauts stepped out on a spacewalk on Friday to complete the repair of an ammonia cooling system at the International Space Station.

Scott Kelly and Kjell Lindgren switched their spacesuits to battery power at 06:22 (11:22 GMT) and floated outside the orbiting outpost moments later, according to a live broadcast on Nasa television.

Their goal for the 6.5 hour spacewalk is to "restore the port truss ammonia cooling system to its original configuration following a leak detection exercise three years ago that ultimately resulted in the replacement of an ammonia pump on the station's truss", Nasa said in a statement.

The spacewalk is the 190th in support of the International Space Station, which just marked 15 continuous years of human habitation.

Read more on:    nasa  |  us  |  space

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