NASA astronauts perform an on-orbit repair to restore a damaged robotic arm on the International Space Station (ISS). The Canadian-built arm, which has seven joints, experiences a malfunction in one of its “wrist” joints, a failure that occurs in the days before the repair operation. According to reporting, flight controllers at NASA’s Johnson Space Center in Houston detect the problem after the arm draws more electrical current than expected and does not move correctly. Astronauts then carry out an “orbital surgery” procedure, using station systems and their spacewalk-free operations to service the arm while it remains attached to the ISS. The repair restores the robot arm to full function after the joint issue is addressed. The operation highlights ongoing maintenance and troubleshooting efforts required for ISS hardware, where astronauts and ground controllers monitor performance and intervene when components deviate from expected behavior. Following the procedure, NASA reports that the robotic arm returns to normal operation.