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Story summary
- China achieved a 1 Gbps laser downlink from a geostationary satellite 36,000 km above Earth using a 2-watt laser.
- At the Lijiang Observatory, a ground system with a 1.8-meter telescope and 357 micro-mirrors adjusted in real time countered atmospheric distortion.
- The setup recovered clean data and boosted usable signal quality from 72% to 91.1%, with results published in Acta Optica Sinica.
