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

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) proposes that some unidentified flying objects (UFOs) are best explained as being physical spacecraft occupied by...

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

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

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...

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

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

published the book Challenge to science: the UFO enigma, where he discussed the extraterrestrial hypothesis of UFOs. 1960 - USAF Captain Edward J. Ruppelt published...

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...

reporting of UFOs, including whistleblower protections and exemptions to non-disclosure orders and agreements. Congressional interest in UFO sightings immediately...

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...

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...

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

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

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 least...

UFO conspiracy theories are a subset of conspiracy theories which argue that various governments and politicians globally, in particular the United States...

near Heber, Arizona. It is widely regarded as a hoax, even by believers of UFOs and alien abductions. Walton was employed by future brother-in-law Mike Rogers...

namely, to determine if UFOs were a threat to national security, and to scientifically analyze UFO-related data. Thousands of UFO reports were collected...

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

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

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

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...

Investigation of UFO reports by the US government Project Galileo Extraterrestrial hypothesis Interdimensional hypothesis Time-traveler hypothesis Cryptoterrestrial...

A flying saucer, or flying disc, is a purported disc-shaped UFO. The term was coined in 1947 by the news media for the objects pilot Kenneth Arnold claimed...

The Condon Committee was the informal name of the University of Colorado UFO Project, a group funded by the United States Air Force from 1966 to 1968...