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Science

International Space Station Robotic Arm Movement Halted

Astronauts aboard the International Space Station (ISS) are currently unable to move the station's large robotic arm and its transporter system due to an unexpected malfunction.

28 September 2026
International Space Station Robotic Arm Movement Halted

Astronauts on the International Space Station (ISS) have encountered an issue preventing the movement of the station's large, 58-foot robotic arm. The Canadarm2, supplied by the Canadian Space Agency, has become immobile along with its mobile transporter that travels along the station's main truss following a routine "walk-off" maneuver.

The Canadarm2 is known for its versatility, capable of inchworm-like movement along the station's exterior, as both ends are essentially identical. Its inability to move presents a significant operational challenge for the space station, which frequently relies on the robotic arm for external tasks.

The cause of the malfunction is currently under investigation. While the exact reason and planned corrective actions have not yet been disclosed, the incident highlights the complexities of operating in space and the reliance on intricate systems.

This situation may impact upcoming missions requiring the use of the robotic arm for maintenance and assembly. The ISS crew and ground control are working to diagnose and resolve the issue.

Original source: arstechnica.com