Karl Wolf,an Air Force sergeant who was assigned to the National Security Agency,said that mysterious structures were discovered on the far side of the moon when the United States was mapping its surface before the lunar landing.

• 曾经在国家安全局工作的空军中士卡尔·沃尔夫说，美国在1969年登月之前绘制月面图时曾在月球遥远的那一面发现了神秘的构筑物。