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space conference in Harbin, capital of northeast China's Heilongjiang Province. With Mars as a long-term target and the Moon as a transition goal, manned lunar expeditions were a focus for global space activities. "We have had in-depth discussions with many experts about manned lunar exploration, and conducted research on key technologies in recent years," Zh

ou said. He also introduced the plan for China's space station,

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which is expected to be completed around 2022. The development of the capsules for the station had started, said Zhou, and many advanced technologies would be used to construct and operate the station. China's Tiangong space station, weighing 66 tonnes, would consist of the Tianhe core capsule and the Wentian

and Mengtian lab capsules. The station could be enlarged to 180

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tonnes if required for scientific research. It could accommodate three to six astronauts and was designed to last at least 10 years, said Zhou, but this could be prolonged through in-orbit maintenance. The station would stay in orbit at an altitude of about 393 kilometers. A cap

sule flying in the same orbit would hold a large optical telesco

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