Extraterrestrial UFO hypothesis | Rich X Wiki Search

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UFOs and ufology

Notable sightings
1947 wave 1952 flap Barney and Betty Hill Belgian wave Calvine photo Chiles-Whitted Flatwoods monster Gorman dogfight Kenneth Arnold sighting Mantell crash Mariana film McMinnville photos Rendlesham Forest Roswell Sightings in outer space 'Swamp gas' Pentagon UFO videos Phoenix Lights
Hoaxes
Alien autopsy hoax Travis Walton
Government investigations
Operação Prato - Brazil Project Magnet - Canada GEIPAN - France Institute 22 - Soviet Union Flying Saucer Working Party - UK Project Condign - UK History of government investigations - US All-domain Anomaly Resolution Office - US NASA's UAP independent study team - US Condon Committee - US Project Blue Book - US Unidentified Anomalous Phenomena Disclosure Act - US
Conspiracy theories
Area 51 Bob Lazar Majestic 12 Men in black Serpo
Religions
Aetherius Society Church of the SubGenius Heaven's Gate Nation of Islam Raëlism Scientology Unarius Academy of Science
Lists of organizations, sightings, studies, etc.
UFO organizations Reported UFO sightings Sightings by country Investigations of UFOs by governments Identification studies of UFOs Ufologists Alleged extraterrestrial beings
v t e

The extraterrestrial hypothesis (ETH; synonymous with interplanetary aircraft ^[a]) proposes that some unidentified flying objects (UFOs) are best explained as being physical spacecraft occupied by intelligent extraterrestrial organisms (non-human aliens) from other planets, or probes designed by extraterrestrials.

^ Haines, Gerald K. (1997). "A Die-Hard Issue CIA's Role in the Study of UFOs, 1947-90". Stud. Intell. 01 (1). Congressional Research Service - Federation of American Scientists. Archived from the original on 4 May 2025. Retrieved 4 May 2025 – via (CIA quoted) in: Lomas (2024) DOI:10.29202/phil-cosm/32/3 - The “Prosaic” Turn para. 2. see Haines: Early CIA Concerns, 1947-52 ref.12: www.cia.gov/resources/csi/static/cia-role-study-UFOs.pdf: "Stone, memorandum to Machle." "Clark, memorandum for DDI, 29 July 1952"

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