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月亮为什么背对着地球
更新时间: 2020-11-01 00:00:00  

由于月球的自转与公转的周期相等,月球始终背对着地球。地球海洋潮汐的产生主要是由于月球引力的作用。月球在绕地球公转的同时进行自转,周期27.32166日,正好是一个恒星月,所以看不见月球背面。这种现象被称“同步自转”,或“潮汐锁定”,几乎是太阳系卫星世界的普遍规律。

关键词: 月亮 为什么 背对 地球

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