The interdimensional UFO hypothesis (IUH) is the proposal that unidentified flying object (UFO) sightings are the result of experiencing other "dimensions"...

The time-traveler hypothesis, also known as chrononaut UFO, future humans, extratempestrial model and Terminator theory is the proposal that unidentified...

The extraterrestrial hypothesis (ETH; synonymous with interplanetary aircraft ) proposes that some unidentified flying objects (UFOs) are best explained...

Cryptoterrestrial hypothesis Evolutionary biology Extraterrestrial hypothesis Genetic mutation Horizontal evolution Interdimensional hypothesis List of conspiracy...

The cryptoterrestrial hypothesis proposes that reports of flying saucers or UFOs are evidence of a hidden, Earth-based, technologically-advanced civilization...

often claiming that UFOs are evidence of extraterrestrial intelligence, technologically advanced cryptids, demons, interdimensional contact or future time...

planet. Interdimensional hypothesis – The proposal that UFO sightings are the result of experiences with another dimension. Psychosocial hypothesis – The...

theory has some elements in common with certain aspects of the Interdimensional UFO hypothesis, such as Jacques Vallée's control system, something Tonnies...

In ufology, the psychosocial hypothesis, abbreviated PSH, argues that at least some UFO reports are best explained by psychological or social means. It...

a serious hypothesis. Critics emerged throughout the 1970s, discrediting Von Däniken's claims. Ufologists separated the idea from the UFO controversy...

The Varginha UFO incident involves a series of events in 1996 when residents of Varginha, Brazil, claimed seeing one or more strange creatures and at...

often claiming that UFOs are evidence of extraterrestrial intelligence, technologically advanced cryptids, demons, interdimensional contact or future time...

moved across the landscape of Belgium. The Belgian UFO Wave of 1989–1992 – A Neglected Hypothesis discusses some sightings that helicopters can explain...

Force's Project Blue Book, who later in life favored the interdimensional hypothesis explanation of UFOs, described the incident as "absolutely weird. There's...

Belgian UFO wave was a series of sightings of triangular UFOs in Belgium, which lasted from 29 November 1989 to April 1990. The Belgian UFO wave began...

abduction (also called abduction phenomenon, alien abduction syndrome, or UFO abduction) refers to the phenomenon of people reporting what they believe...

became the basis for long-lasting and increasingly complex and contradictory UFO conspiracy theories, which over time expanded the incident to include governments...

the first civilian to document the site of the Roswell UFO incident, and supported the hypothesis that it was a genuine crash of an extraterrestrial spacecraft...

extraterrestrial life has yet to be discovered. No evidence supporting Grusch's UFO claims has been presented and they have been dismissed by multiple, independent...

This is a list of alleged sightings of unidentified flying objects or UFOs in Brazil. On 23 July 1947, topographer José Higgins was working with many laborers...

From July 12 to 29, 1952, a series of unidentified flying object (UFO) sightings were reported in Washington, D.C., and later became known as the Washington...

were likely extraterrestrial in origin. (See also Extraterrestrial UFO hypothesis.) This was subsequently rejected by Gen. Hoyt Vandenberg, U.S. Air Force...

scientific legitimacy of the extraterrestrial hypothesis and later for promoting the interdimensional hypothesis. Vallée was born in Pontoise, France in 1939...

proposed the extraterrestrial UFO hypothesis with an "Estimate of the Situation" in late 1948 concluding "that the UFOs were of extraterrestrial origin"...

extraterrestrials from the Orion constellation. Others claim they are interdimensional, coming from another universe or dimension. Michael Barkun, professor...

may refer to: Inverted-U hypothesis of Somatic anxiety Industrial University of Ho Chi Minh City Interdimensional UFO hypothesis This disambiguation page...

book stories, claims or stories have circulated linking UFOs to Nazi Germany. The German UFO theories describe supposedly successful attempts to develop...

is responsible for UAP and UFO reports and instead believe they are the result of "extraterrestrial, the interdimensional, and the ultra-terrestrial,...

observe UFOs. Identification studies of UFOs Extraterrestrial hypothesis Psychosocial hypothesis Interdimensional hypothesis Time-traveler hypothesis Cryptoterrestrial...

as a UFO. The occurrence is the most famous of alleged UFO events to have happened in the United Kingdom, and is among the best-known reported UFO events...