Building blocks that assemble themselves in space just passed their air-hockey test

Space telescopes and power stations have a packaging problem: anything bigger than a rocket's nose cone cannot fly. Researchers at Nanjing University of Aeronautics and Astronautics and the Beijing Institute of Technology are teaching the cargo to build itself. Their triangular modules — three corner pods linked by carbon-fibre rods that spool in and out like tape measures — use small thrusters to drift toward each other, adjust their own size and angle as they approach, and snap together with magnets for the final centimetres. On a precision air-bearing table (the Earthbound stand-in for floating in space), the active adjustment corrected positioning errors by over 98% — without it, the latches missed and assembly failed. Published in Space: Science & Technology, it is an early step toward swarms of modules assembling observatories and power platforms far too large to launch whole.

SDG 9 · Industry, innovation and infrastructure — Mechanism: tech innovation