China’s ‘Night‑Light’ Laser Satellite Leaves Starlink in the Dust—What It Means for the Future of Space Internet and Warfare
On 17 June 2025, Prof. Wu Jian of Peking University and Dr. Liu Chao of the Chinese Academy of Sciences down-linked 1 Gbps from an unnamed GEO satellite 36,705 km above Earth using a 2-watt laser. The AO‑MDR method combines 357 micro-mirrors on a 1.8 m telescope to reshape the wavefront and eight spatial modes, with a path-picking algorithm selecting the three cleanest channels and boosting usable signal probability from 72% to 91% in heavy turbulence. The Chinese GEO demo delivered 1 Gbps, about five times the throughput of typical Starlink down-links (100–300 Mbps, peaks ~600 Mbps) from 550 km