Space Robot Flexes Its Arms

March 17, 2008 -- Astronauts flexed the giant arms of the International Space Station's new robot for the first time, testing the brakes and maneuvering the appendages into position for a Monday night spacewalk.

All the brakes on the Canadian-built robot named Dextrepassed the test but one in the wrist joint of its left arm. That brake slipped a tad more than engineers wanted, but officials weren't concerned.

"In the long term it's not going to affect the operation of Dextre in any significant way," said Pierre Jean, Canada's acting space station program manager.

Astronauts Richard Linnehan and Robert Behnken planned to spend Monday's spacewalk adding a tool holster and other accouterments for Dextre, which is designed to assist spacewalking astronauts maintain the station.

They were hoping for a less challenging outing than Linnehan and fellow spacewalker Michael Foreman endured over the weekend to install Dextre's 11-foot arms. The pair had to use a pry bar and brute force to free one of the arms from the transport bed where it was latched down for launch.

Still, Foreman said his first spacewalk was one of the most "rewarding, exhilarating and difficult" experiences of his life.