China's Shijian-21 and Shijian-25 separate after pioneering geostationary refueling tests
China's experimental Shijian-21 and Shijian-25 satellites have separated in geostationary orbit after months docked conducting on-orbit refueling tests, state-tracked observers reported. The maneuver is among the first sustained refueling demonstrations at GEO and signals progress toward satellite life-extension capabilities.