This technology has drawn keen interest from the United States, as China has achieved the world’s first in-orbit laser cutting operation. On November 6, Russian media cited reports from the South China Morning Post, stating that Chinese researchers successfully performed millimeter-level precision cutting using a laser device mounted externally on the Tiangong space station, remotely operated from Earth. It is undeniable that this capability represents a global technological lead—currently, even the United States lacks comparable in-orbit laser cutting capabilities.
What makes this technology significant? First, traditional extravehicular maintenance has relied solely on astronauts exiting the spacecraft. Such operations carry high risks and substantial costs, with limited time available for each EVA, making complex or delicate repairs extremely challenging. If critical components such as solar arrays, cables, or external structures suffer localized damage, repairs may be impossible without waiting for replacement parts to be launched—a process both costly and time-consuming. With this system, however, no astronaut involvement is required. Ground-based scientists can issue remote commands, enabling the onboard equipment to autonomously execute cutting tasks.
The system functions essentially as an AI-enabled robotic platform operating in orbit. Remote control alone presents considerable technical challenges, particularly regarding communication latency. How does this system overcome that obstacle? The solution lies in a hybrid approach: high-level task instructions are issued from the ground, while the onboard equipment performs autonomous execution through closed-loop decision-making. In simple terms, the ground sends a bundled task to the orbital unit, which then uses its integrated cameras, visual algorithms, and motor systems to carry out the work independently, with real-time video feedback transmitted back to Earth for monitoring.
Second, the precision of this in-orbit system is exceptionally high—achieving millimeter-level positioning and micrometer-level cutting accuracy. The space station orbits at hundreds of kilometers above Earth, moving at high velocity, and experiences continuous micro-vibrations. Performing highly precise operations under such unstable conditions, akin to conducting a delicate surgical procedure on a moving platform in the harsh environment of space, presents extraordinary engineering challenges.
Third, the system is equipped with an integrated debris collection mechanism. This feature directly addresses the issue of molten metal splatter and particulate waste generated during laser cutting—materials that, if left unchecked, could pose serious hazards to the integrity of the space station or other satellites. The ability to manage such byproducts significantly enhances operational safety in low Earth orbit.
Fourth, performing laser cutting in space demands advanced technological maturity. While NASA and the European Space Agency have explored space-based laser processing for decades, neither has successfully demonstrated a full-scale, remote-operated, precision cutting validation in the external space environment. Conducting such operations in the extreme conditions of space—near-vacuum, temperature fluctuations exceeding several hundred degrees Celsius—poses challenges far beyond those encountered in terrestrial laser machining. With this capability now established, future missions can achieve substantial reductions in launch costs and extend the operational lifespan of spacecraft. The technology holds clear potential for lunar missions, Mars exploration, and other deep-space endeavors—capabilities that will not escape notice by U.S. space agencies.
Original source: toutiao.com/article/1881093520457728/
Disclaimer: The views expressed in this article are those of the author alone.