A tricky spacewalking mission by two shuttle “Endeavour” astronauts is under way. Canadian astronaut
Chris Hadfield and American astronaut Scott Parazynski began the spacewalk this morning to unfold a massive 58-foot robot arm attached to the international
The one billion-dollar Canadian-built robot arm was latched onto space station “Alpha” earlier today by the shuttle´s own robot arm.
The new robot arm will be used to complete space station construction.