Two astronauts from the U.S. space shuttle Endeavour have successfully attached two arms to a giant Canadian robot called Dextre at the International Space Station.

Richard Linnehan and Michael Foreman conducted Sunday's seven-hour spacewalk.  Dextre's arms are 3.3 meters long and will be used in future maintenance and service tasks at the space station. 

Astonaunts plan to finish assembling the $200 million robot during a third spacewalk set to start on Monday. 

At the start of Endeavour's 12-day mission, astronauts attached a Japanese-built module,which is the first component of the new Kibo laboratory.


Some information for this report was provided by AP.