China tests remote laser maintenance on space station
A research team from Huazhong University of Science and Technology has successfully performed the first remote-controlled laser cutting operation on the exterior of an orbiting space station.
Researchers from Huazhong University of Science and Technology, in collaboration with the Shanghai Institute of Space Power Sources, have successfully tested a laser maintenance device on the exterior of China's space station. This experiment represents the first time remote-controlled, high-precision laser cutting has been performed in the extreme environment of space.
Maintaining the structural integrity of space stations is critical due to potential damage from space debris, which can travel at speeds of 7 to 10 kilometers per second. While previous repairs were conducted manually by astronauts—such as the restoration of solar panels in 2024 and 2026—this new technology allows for precise, remote interventions. The system addresses challenges including high vacuum, intense radiation, and severe temperature fluctuations.
The development process for the laser device took one year to complete. The system incorporates multi-axis positioning mechanisms and advanced visual guidance to achieve micron-level accuracy. The success of this test demonstrates a shift toward automated orbital maintenance, reducing the reliance on human intervention for high-risk exterior repairs.