Shuttle astronauts begin space walk
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Two astronauts from the Discovery shuttle embark on a space walk on Tuesday to install Japan's Kibo laboratory on the International Space Station. They also plan to retrieve inspection equipment a previous mission had left behind. (Report: T.Grucza)
Mission specialists Michael Fossum and Ronald Garan also will retrieve a laser-studded inspection boom which is usually used to check the ship's wings and nose cap for damage.
The shuttle had no room for the boom because of the size of the Japanese lab and so the shuttle on the previous mission in March left it behind on the station for retrieval by the Discovery crew, which will take it back to earth.
Instead, the Discovery astronauts used a camera on the end of the shuttle's 50-foot (15-metre) robot arm, but they could not reach the underside of the wings. Further inspections are planned for latter in this mission.
Damage inspections have been a routine part of shuttle missions since the 2003
Fossum and Garan were to spend their sleep period in the station's Quest airlock to purge their bodies of nitrogen before the space walk, which was scheduled to begin at 11:32 a.m. EDT (1532 GMT) and last roughly 6-1/2 hours.
The giant lab Kibo is the centerpiece of this two-week international mission and will establish
The Discovery crew floated aboard the ISS on Monday where they were warmly greeted and embraced by its crew after a flawless docking and a two-day journey.
But the mission has not been incident-free.
NASA officials revealed on Monday that bricks and other debris had come off the flame trench beneath the launchpad at Cape Canaveral in
The debris was strewn around the launch area and while NASA managers described the incident as "unprecedented" they said they were confident it could be repaired in time for October's shuttle mission to the Hubble Space Telescope.
"We'll fix it without any problems before October," deputy shuttle program manager LeRoy Cain told reporters at the
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