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SpaceX的月球旅客为什么不登上月球？
source link: https://tech.sina.com.cn/d/s/2018-09-21/doc-ifxeuwwr6640641.shtml
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新浪科技讯北京时间9月21日消息，据国外媒体报道，到目前为止，人类历史上只有12个人（全部为男性美国宇航员）在月球上行走过。还有12个人（同样全部为男性美国宇航员）曾经围绕月球飞行过，却从未涉足月球表面。不过，第二个数字很可能在不久的将来发
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