Two NASA Astronauts Set to Repair ISS Robotic Arm in Live Spacewalk

NASA astronauts Chris Williams and Jessica Meir will perform a roughly 6.5-hour spacewalk to replace a 200‑pound wrist joint on the ISS’s Canadarm2 after a May malfunction; a spare joint is on board, and NASA coverage begins at 7:00 a.m. EDT today as the 56‑foot robot arm—part of the station since 2001—receives ongoing maintenance.