Apollo astronauts used seismometers during their visits to the Moon and discovered that the gray orb isn't a totally dead place, geologically speaking.
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1969年,阿波罗计划:阿波罗12号太空飞船在太平洋上安全落水,完成了第二次有人驾驶的登月任务。
1969 - Apollo program: the Apollo 12 spacecraft splashes down safely in the Pacific Ocean, ending the second manned mission to the Moon.