The DIY Rocketeer Building SpaceX Replicas of Self-Landing Rockets
Joe Barnard left his background in videography and music production to launch his life of amateur rocketry, and he shares his DIY adventures in building rock...
这是载人登月的难点,美俄载人登月有去有回,说明人家带着一个回程火箭登月,相当于“回收”一个火箭到月球,然后做这个回城车返回。能探月能探火星,如果只去无回,不说明有火箭回收这个技术。
杨利伟是坐着卫星舱摔回地球的,火箭早扔了,据说回来擦伤,满脸血。