Astronauts assemble robot during seven-hour spacewalk

March 18, 2008

Two American astronauts completed a spacewalk overnight, assembling a massive human-like robot designed to replace them in handling delicate maintenance tasks outside the International Space Station (ISS). Rick Linnehan and Robert Behnken finished putting together the Canadian-built robot Dextre during a nearly seven-hour sortie outside the ISS. Images from NASA TV.