自1976年年末《信息自由法案》实施以来,以前被视为机密文件的UFO材料开始被大量公开。1969年的美国科学促进会(AAAS)研讨会后,科学家一直呼吁公开UFO相关材料,但他们的呼声直到7年之后才有了回应。这得益于美国《信息自由法案》的实施,在该法案颁布之前,UFO资料一直在政府档案馆中被束之高阁,直到该法案颁布之后,相关部门才有了对资料予以公开或不公开的丁点选择权。《信息自由法案》规定,公民可以获取所有关于UFO的 Since the Freedom of Information Act went into effect in late 1976, UFO material, previously considered confidential, has been widely publicized. After the AAAS Symposium of 1969, scientists have been urging disclosure of UFO-related materials, but their response did not respond until seven years later. Thanks to the implementation of the Freedom of Information Act in the United States, prior to the enactment of the act, the UFO information had been shelved in the government archives. Only after the enactment of the act did the relevant department have the obligation to make the information public or not Option. The Freedom of Information Act states that citizens can obtain all information about the UFO