NASA astronauts operate on space station's broken robot arm

The orbital surgery on the International Space Station returned the Canadian-built robot arm to full health after its "wrist" ...
Space.com on MSN

Watch 2 NASA astronauts fix ISS' huge robotic arm during June 30 spacewalk

NASA astronauts Chris Williams and Jessica Meir will fix the International Space Station's Canadarm2 during a spacewalk on ...
AOL

Will a four-armed robot replace astronauts in space?

Space changes the rules for almost everything, including how a robot should move. On Earth, legs help us stand, balance and walk across a room. In microgravity, those same legs lose much of their ...