Page last updated at 19:48 GMT, Tuesday, 18 November 2008

Endeavour astronauts' spacewalk

Astronauts Heidemarie Stefanyshyn-Piper and Stephen Bowen have taken part in the first of four spacewalks of the Space Shuttle Endeavour's current mission to the International Space Station.

The pair begin the complicated task of unclogging one of two massive joints that turn the station's solar wings towards the sun.

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