China’s space programme has moved a step closer to crewed lunar and interplanetary missions with the completion of a prototype super heavy-lift rocket engine, according to state media.The 220-tonne engine is intended to power the next generation Long March 9 (CZ-9) carrier rocket, expected to enter service before 2030. The CZ-9 will be a three-stage rocket with boosters, with the new engine forming its core and second stage, according to China Space News.“It is one of the most important symbols…

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