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...

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

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

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...

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

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...

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, Unidentified Flying Object capture) refers to the phenomenon of...

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...

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...

ufologist. He is perhaps best remembered for his UFO research. Hynek acted as scientific advisor to UFO studies undertaken by the U.S. Air Force under three...

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

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

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

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

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

or flying disc, is a purported disc-shaped unidentified flying object (UFO). The term was coined in 1947 by the U.S. news media for the objects pilot...

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

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

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...

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...

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...

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

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

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

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...