Two NASA astronauts gave a robotic arm a hand up — or rather, a replacement wrist joint — during a successful spacewalk outside the International Space Station on Tuesday (June 30).
Chris Williams and Jessica Meir, both flight engineers on the station's Expedition 74 crew, spent seven hours and 20 minutes repairing the Canadarm2 remote manipulator system (RMS) after it was observed drawing current but not moving as expected in late May. The 58-foot-long (18 meters) arm has been in regular use since it was installed on the orbiting outpost in April 2001.
