未经查明的空中飞行物,俗称飞碟,因为其与地外生命有关而备受关注。外星人是否真实存在?他们对于地球人又是怎样的态度?这些都是吸引着人们对于飞碟进行探究的问题。历史上多次出现飞碟的记载并流传着多例飞碟的事迹,是真是假?外星人真的来过么?
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