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Beijing

Big solar drone reaches near space

China's Caihong solar-powered unmanned aerial vehicle, the country's first near-space solar drone, has successfully flown at an altitude of 20 kilometers. The project team of China Aerospace Science and Technology Corp announced on Tuesday that the CH UAV, with a wingspan of 45 meters, flew smoothly in near space for more than 15 hours under control, completing its planned path before landing securely.