NASA cancelled the next three moon missions and quietly drew the Apollo programme to a close.

航太总署取消了其后三次登月任务悄悄地结束了阿波罗计划。

But others will, if all goes to plan, return astronauts to the lunar surface half a century after the end of the Apollo programme.

但如果一切按计划进行，其他人将在阿波罗计划结束半个世纪后将宇航员送回月球表面。

First discovered during the Apollo programme, these lunar lava tubes are a legacy of when Earth's nearest celestial neighbour was geologically hyperactive, with streams of boiling basaltic magma bursting from the interior to flow across the Moon's surface as lava.

在阿波罗计划期间首次发现，这些月球熔岩管是地球最近的天体邻居在地质上过度活跃时留下的遗产，沸腾的玄武岩岩浆流从内部爆发， 以熔岩的形式流过月球表面。