Extraterrestrial life, or alien life, is life which does not originate from Earth. No extraterrestrial life has yet been scientifically conclusively detected. Such life might range from simple forms such as prokaryotes to intelligent beings, possibly bringing forth civilizations that might be far more advanced than humans. The Drake equation speculates about the existence of sapient life elsewhere in the universe. The science of extraterrestrial life is known as astrobiology.
An unidentified flying object (UFO), or unidentified anomalous phenomenon (UAP), is any perceived airborne, submerged or transmedium phenomenon that cannot be immediately identified or explained. Upon investigation, most UFOs are identified as known objects or atmospheric phenomena, while a small number remain unexplained.
Remote viewing (RV) is the practice of seeking impressions about a distant or unseen subject, purportedly sensing with the mind. A remote viewer is expected to give information about an object, event, person, or location hidden from physical view and separated at some distance. Physicists Russell Targ and Harold Puthoff, parapsychology researchers at Stanford Research Institute (SRI), are generally credited with coining the term "remote viewing" to distinguish it from the closely related concept of clairvoyance. According to Targ, the term was first suggested by Ingo Swann in December 1971 during an experiment at the American Society for Psychical Research in New York City.
UFO conspiracy theories are a subset of conspiracy theories which argue that various governments and politicians globally, in particular the United States government, are suppressing evidence that unidentified flying objects are controlled by a non-human intelligence or built using alien technology. Such conspiracy theories usually argue that Earth governments are in communication or cooperation with extraterrestrial visitors despite public disclaimers, and further that some of these theories claim that the governments are explicitly allowing alien abduction.
Extraterrestrial intelligence (ETI) refers to hypothetical intelligent extraterrestrial life. No such life has ever been verifiably observed to exist. The question of whether other inhabited worlds might exist has been debated since ancient times. The modern form of the concept emerged when the Copernican Revolution demonstrated that the Earth was a planet revolving around the Sun, and other planets were, conversely, other worlds. The question of whether other inhabited planets or moons exist was a natural consequence of this new understanding. It has become one of the most speculative questions in science and is a central theme of science fiction and popular culture.
Edgar Dean "Ed" Mitchell was a United States Navy officer and aviator, test pilot, aeronautical engineer, ufologist, and NASA astronaut. As the Lunar Module Pilot of Apollo 14 in 1971 he spent nine hours working on the lunar surface in the Fra Mauro Highlands region, and was the sixth person to walk on the Moon. He was the second Freemason to set foot on the Moon, after Buzz Aldrin.
Ufology, sometimes written UFOlogy, is the investigation of unidentified flying objects (UFOs) by people who believe that they may be of extraordinary origins. While there are instances of government, private, and fringe science investigations of UFOs, ufology is generally regarded by skeptics and science educators as an example of pseudoscience.
The Fourth International Posadist is a Trotskyist international organisation. It was founded in 1962 by J. Posadas, who had been the leader of the Latin America Bureau of the Fourth International in the 1950s, and of the Fourth International's section in Argentina. Between their split from the International Secretariat of the Fourth International in 1962 and Posadas' death in 1981, Posadists developed a strain of communism that included several fringe ideas, which brought them into conflict with more mainstream left-wing groups.
The extraterrestrial hypothesis (ETH) proposes that some unidentified flying objects (UFOs) are best explained as being physical spacecraft occupied by extraterrestrial intelligence or non-human aliens, or non-occupied alien probes from other planets visiting Earth.
Alien abduction refers to the phenomenon of people reporting what they believe to be the real experience of being kidnapped by extraterrestrial beings and subjected to physical and psychological experimentation. People claiming to have been abducted are usually called "abductees" or "experiencers". Most scientists and mental health professionals explain these experiences by factors such as suggestibility, sleep paralysis, deception, and psychopathology. Skeptic Robert Sheaffer sees similarity between some of the aliens described by abductees and those depicted in science fiction films, in particular Invaders From Mars (1953).
In ufology, the psychosocial hypothesis, abbreviated PSH, argues that at least some UFO reports are best explained by psychological or social means. It is often contrasted with the better-known extraterrestrial hypothesis (ETH), and is particularly popular among UFO researchers in the United Kingdom, such as David Clarke, Hilary Evans, the editors of Magonia magazine, and many of the contributors to Fortean Times magazine. It has also been popular in France since the publication in 1977 of a book written by Michel Monnerie, Et si les ovnis n'existaient pas?.
Eduard Albert Meier, commonly nicknamed "Billy", is the founder of a UFO religion called the "Freie Interessengemeinschaft für Grenz- und Geisteswissenschaften und Ufologiestudien" and alleged contactee whose UFO photographs are claimed to show alien spacecraft. Meier claims to be in regular contact with extraterrestrial beings he calls the Plejaren. He also presented other material during the 1970s such as metal samples, sound recordings and film footage. Meier claims to be the seventh reincarnation after six prophets common to Judaism, Christianity, and Islam: Enoch, Elijah, Isaiah, Jeremiah, Immanuel (Jesus), and Muhammad.
Jacques Fabrice Vallée is an Internet pioneer, computer scientist, venture capitalist, author, ufologist and astronomer currently residing in San Francisco, California and Paris, France.
Contactees are persons who claim to have experienced contact with extraterrestrials. Some claimed ongoing encounters, while others claimed to have had as few as a single encounter. Evidence is anecdotal in all cases.
In ufology, Nordic alien is the name given to alleged humanoid extraterrestrials, purported to come from the Pleiades, who resemble Nordic-Scandinavians.
The Skeptic Encyclopedia of Pseudoscience is a two-volume collection of articles that discuss the Skeptics Society's scientific findings of investigations into pseudoscientific and supernatural claims. The editor, Michael Shermer, director of the Skeptics Society, has compiled articles originally published in Skeptic magazine with some conceptual overviews and historical documents to create this encyclopedia. It was published by ABC-CLIO in 2002.
Adam Frank is an American physicist, astronomer, and writer. His scientific research has focused on computational astrophysics with an emphasis on star formation and late stages of stellar evolution. His work includes studies of exoplanet atmospheres and astrobiology. The latter include studies of the generic response of planets to the evolution of energy-intensive civilizations (exo-civilizations).
The cultural impact of extraterrestrial contact is the corpus of changes to terrestrial science, technology, religion, politics, and ecosystems resulting from contact with an extraterrestrial civilization. This concept is closely related to the search for extraterrestrial intelligence (SETI), which attempts to locate intelligent life as opposed to analyzing the implications of contact with that life.
