月球总是以同一面对着地球的,因此我们在地球上是看不到月球背面的。之所以这样,是因为月球的自转和公转周期是相同的。要理解这一现象,同学们可以做一个实验:画一个圆,标出东西南北方向,你站在圆心(代表地球);再找一个朋友,站在圆上,让他面部朝前(不扭动脖 The moon always faces the Earth in the same direction, so we can not see the back of the moon on Earth. The reason for this is that the lunar rotation and revolution periods are the same. To understand this phenomenon, students can do an experiment: Draw a circle, mark the north-south direction of things, you stand in the center (on behalf of the Earth); Find a friend, stand on the circle, let his face forward Move the neck