用一个著名理论寻找外星人,外星人究竟在哪里?费米悖论

原视频:https://www.youtube.com/watch?v=-h08yMkPxRE

【时长】Youtube:15:01,西瓜:15:51,抖音:05:27、07:31、02:59 = 15:57

抖音 链接1:https://www.douyin.com/video/6996989004755275020

抖音 链接2:https://www.douyin.com/video/6996989000179371275

抖音 链接3:https://www.douyin.com/video/6996988928435686689