美国宇航局公布,美国宇航局计划在2025年之前将人类送上一颗小行星,并在21世纪30年代将人类送上火星。按照计划,宇航局首先要引导一颗小行星进入月球轨道后派遣宇航员登陆。此后的这颗小行星会充当一个测试前哨和中途站,最终实现登陆火星的梦想。而目前,火星登陆任务所需的深空火箭、太空舱以 NASA announced that NASA plans to send humans an asteroid by 2025 and send humans to Mars by the 1930s. According to the plan, NASA first to guide an asteroid into orbit after landing astronauts landing. After this asteroid will act as a test outpost and halfway point, and ultimately landing Mars dream. At the moment, the spacecraft is required for the deep space rocket needed by Mars to land the mission