The Apollo landings took place during lunar mornings so the stars were not bright enough to be captured on camera.

阿波罗登陆的时间对于月球来说是早上，所以星星没有那么明亮，相机也很难捕捉到。

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This U. s. mission was part of a series of unmanned lunar prospecting missions in preparation for the manned Apollo landings.

美国这次探月任务是无人驾驶的月球勘测系列飞行中的一次，目的是为载人阿波罗着陆任务做准备。

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They flew on two suborbital and four Earth-orbital Mercury launches, nine Earth-orbital Gemini flights, two Earth-orbital Apollo tests, and two lunar-orbital tests that made those lunar surface landings possible.

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In preparation, four Earth orbital Mercury launches (carrying one astronaut each), one suborbital and nine Earth orbital Gemini flights (two astronauts each), two Earth orbital Apollo tests (three astronauts each), and two orbit tests made the lunar landings possible.

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