Among the tasks Discoverys astronauts performed for the station was the reconfiguring of a gyroscope, which failed in March. Four gyroscopes, each weighing 660 pounds, are intended to steer the station, but only two have been working in recent months.
On Monday, during their second spacewalk, Discovery astronauts Stephen Robinson and Soichi Noguchi, planned to replace the other failed gyroscope, which has not worked since 2002.
The pair planned to go over procedures for installing the gyroscope on Sunday with astronaut Andrew Thomas, who was set to direct Mondays replacement.
As they began spacewalk preparations Sunday, Robinson informed Mission Controls Stephen Frick that things might proceed slower than anticipated.
If you saw what our mid-deck looks like right now, youd see why, Robinson said as his colleagues transferred items between the shuttle and station. Its a high traffic zone.
Im afraid it would be a little too frightening, Frick responded with a chuckle.
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