Ed Stoddard
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/ 21 March 2008

Astronauts test repair technique on spacewalk

A pair of astronauts ended a spacewalk late on Thursday in which they tested a repair procedure for the heat shields on the space-shuttle fleet — a technique Nasa hopes it never needs to use. During the over six-hour outing the pair also replaced a faulty circuit breaker and removed a thermal sock from the station’s new Canadian-built handyman robot.