NASA astronauts head outside the space station to replace a Canadarm2 wrist joint that malfunctioned after 25 years in orbit

NASA astronauts head outside the space station to replace a Canadarm2 wrist joint that malfunctioned after 25 years in orbit Space Daily Spacewalkers Continuing Canadarm2 Robotic Arm Repairs NASA (.gov) Watch 2 NASA astronauts fix ISS' huge robotic arm during spacewalk today Space Spacewalkers successfully replace broken "wrist" joint in space station's robot arm CBS News Netflix to stream next NASA spacewalk outside ISS. Watch live USA Today