Time-traveler UFO Hypothesis
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The time-traveler hypothesis, also known as chrononaut UFO, future humans, extratempestrial model and Terminator theory is the proposal that
unidentified flying objects An unidentified flying object (UFO) is an object or phenomenon seen in the sky but not yet identified or explained. The term was coined when United States Air Force (USAF) investigations into flying saucers found too broad a range of shape ...
are humans traveling from the future using advanced technology. Some notable people have given recent public exposure to the hypothesis, such as retired
NASA The National Aeronautics and Space Administration (NASA ) is an independent agencies of the United States government, independent agency of the federal government of the United States, US federal government responsible for the United States ...
aerospace engineer Larry Lemke,
Wisconsin Wisconsin ( ) is a U.S. state, state in the Great Lakes region, Great Lakes region of the Upper Midwest of the United States. It borders Minnesota to the west, Iowa to the southwest, Illinois to the south, Lake Michigan to the east, Michig ...
congressman Mike Gallagher, and American filmmaker
Steven Spielberg Steven Allan Spielberg ( ; born December 18, 1946) is an American filmmaker. A major figure of the New Hollywood era and pioneer of the modern blockbuster, Spielberg is widely regarded as one of the greatest film directors of all time and is ...
. The time-traveler hypothesis is considered extremely implausible by mainstream scholars and is generally regarded as unorthodox even among UFO theorists who argue that UFOs are extraterrestrial spacecraft or interdimensional phenomena.


Antecedents


Origins of time travel speculation

The notion of time travel from the future to the past is thought to have been introduced for the first time in literature by French
botanist Botany, also called plant science, is the branch of natural science and biology studying plants, especially Plant anatomy, their anatomy, Plant taxonomy, taxonomy, and Plant ecology, ecology. A botanist or plant scientist is a scientist who s ...
and geologist
Pierre Boitard Pierre Boitard (27 April 1787 Mâcon, Saône-et-Loire – 25 August 1859) was a French botanist and geologist. As well as describing and classifying the Tasmanian devil, he is notable for his fictional natural history ''Paris avant les hommes ...
in his popular 1861 book ''Paris avant les hommes'' (Paris before Men), featuring a man sent back to
prehistoric Prehistory, also called pre-literary history, is the period of human history between the first known use of stone tools by hominins  million years ago and the beginning of recorded history with the invention of writing systems. The use o ...
Earth where he interacts with an ape-like ancestor. A few years later, in 1887,
Camille Flammarion Nicolas Camille Flammarion FRAS (; 26 February 1842 – 3 June 1925) was a French astronomer and author. He was a prolific author of more than fifty titles, including popular science works about astronomy, several notable early science fiction ...
published ''Lumen'', a novel featuring an alien soul traveling through different worlds and historical periods. Although traveling back in time is almost-universally considered physically impossible, theoretical research has explored whether it might be possible. It has also been speculated by scientists such as J. Richard Gott, Ronald Mallet and others that humans may someday be able to time travel to the past.


Speculation of future human evolution

Many authors and researchers have speculated about the future evolution of mankind. In 1888 English author
H. G. Wells Herbert George Wells (21 September 1866 – 13 August 1946) was an English writer, prolific in many genres. He wrote more than fifty novels and dozens of short stories. His non-fiction output included works of social commentary, politics, hist ...
published his famous science-fiction novella ''
The Time Machine ''The Time Machine'' is an 1895 dystopian post-apocalyptic science fiction novella by H. G. Wells about a Victorian scientist known as the Time Traveller who travels to the year 802,701. The work is generally credited with the popularizati ...
'' featuring a future evolution of humans and is generally regarded as one of the first modern instances of both time travel and
speculative evolution Speculative evolution is a subgenre of science fiction and an artistic movement focused on hypothetical scenarios in the evolution of life, and a significant form of Biology in fiction, fictional biology. It is also known as speculative biology an ...
. Other writers on speculative evolution include
Edgar Rice Burroughs Edgar Rice Burroughs (September 1, 1875 – March 19, 1950) was an American writer, best known for his prolific output in the adventure, science fiction, and fantasy genres. Best known for creating the characters Tarzan (who appeared in ...
, British philosopher and science fiction writer
Olaf Stapledon William Olaf Stapledon (10 May 1886 – 6 September 1950) was an English philosopher and author of science fiction.Andy Sawyer, " illiamOlaf Stapledon (1886-1950)", in Bould, Mark, et al, eds. ''Fifty Key Figures in Science Fiction''. New York ...
with his 1930 "
future history A future history, imaginary history or anticipatory history is a fictional conjecture of the future used by authors of science fiction and other speculative fiction to construct a common background for stories. Sometimes the author publishes a t ...
" novel ''
Last and First Men ''Last and First Men: A Story of the Near and Far Future'' is a "future history" science fiction novel written in 1930 by the British author Olaf Stapledon. A work of unprecedented scale in the genre, it describes the history of humanity from t ...
'', American author
Kurt Vonnegut Kurt Vonnegut ( ; November 11, 1922 – April 11, 2007) was an American author known for his Satire, satirical and darkly humorous novels. His published work includes fourteen novels, three short-story collections, five plays, and five nonfict ...
in '' Galápagos'', British writer Stephen Baxter in ''
Evolution Evolution is the change in the heritable Phenotypic trait, characteristics of biological populations over successive generations. It occurs when evolutionary processes such as natural selection and genetic drift act on genetic variation, re ...
'', Turkish artist and author Cevdet Mehmet Kösemen in ''
All Tomorrows ''All Tomorrows: A Billion Year Chronicle of the Myriad Species and Mixed Fortunes of Man'' is a 2006 work of science fiction and speculative evolution written and illustrated by the Turkish artist C. M. Kosemen under the pen name Nemo Ramjet. I ...
'' and others.
Climate change Present-day climate change includes both global warming—the ongoing increase in Global surface temperature, global average temperature—and its wider effects on Earth's climate system. Climate variability and change, Climate change in ...
, the
technological singularity The technological singularity—or simply the singularity—is a hypothetical point in time at which technological growth becomes uncontrollable and irreversible, resulting in unforeseeable consequences for human civilization. According to the ...
, space travel and
genetic enhancement Human genetic enhancement or human genetic engineering refers to human enhancement by means of a genetic modification. This could be done in order to cure diseases (gene therapy), prevent the possibility of getting a particular disease (similarly ...
have also been identified as potential factors capable of altering the evolution of humans in the future, leading to different
transhuman Transhuman, or trans-human, is the concept of an intermediary form between human and Posthuman#Transhumanism, posthuman. In other words, a transhuman is a being that resembles a human in most respects but who has powers and abilities beyond those ...
and
posthuman Posthuman or post-human is a concept originating in the fields of science fiction, futurology, contemporary art, and philosophy that means a person or entity that exists in a state beyond being human. The concept aims at addressing a variety of ...
scenarios.


UFOs and initial explanations

Human beings have reported unknown objects in the skies since antiquity. In the 1890s, a wave of
mystery airships The mystery airship or phantom airship was a phenomenon that thousands of people across the United States claimed to have observed from late 1896 through mid 1897. Typical airship reports involved nighttime sightings of unidentified flying light ...
sightings was reported throughout the US, followed by
Foo fighter The term ''foo fighters'' was used by Allied aircraft pilots during World War II to describe various unidentified flying objects (UFO) or mysterious aerial phenomena seen in the skies over both the European and Pacific theaters of operations. ...
s and
ghost rockets Ghost rockets (, also called Scandinavian ghost rockets) were rocket- or missile-shaped unidentified flying objects sighted in 1946, mostly in Sweden and nearby countries like Finland. The first reports of ghost rockets were made on February 26 ...
during
World War II World War II or the Second World War (1 September 1939 – 2 September 1945) was a World war, global conflict between two coalitions: the Allies of World War II, Allies and the Axis powers. World War II by country, Nearly all of the wo ...
. The modern UFO era began in the Summer of 1947, days after the United States announced plans to re-industrialize Germany over strenuous Soviet objection, sparking the
Cold War The Cold War was a period of global Geopolitics, geopolitical rivalry between the United States (US) and the Soviet Union (USSR) and their respective allies, the capitalist Western Bloc and communist Eastern Bloc, which lasted from 1947 unt ...
. Amid fears of a Soviet response, civilian pilot
Kenneth Arnold Kenneth Albert Arnold (March 29, 1915 – January 16, 1984) was an American aviator, businessman, and politician. Arnold is known best for reporting what is generally considered the first widely publicized modern sighting of an unidentified fl ...
reported witnessing a formation of supersonic aircraft. Wartime prohibition of live "man on the street" broadcasts having ended, Arnold's sighting was covered nationwide on radio and print media. In the days and weeks following the Arnold sighting, a nationwide craze swept the nation as over 800 copycat sightings were published in the English-speaking press. 1947 sources speculated that the sightings resulted from novel US or Soviet technology, misidentification of mundane objects, or behavioral effects like mass hysteria; Fringe sources suggested that the sightings were a sign of the end of the world, were angelic or demonic, or were vehicles carrying people from other planets or other "dimensions".


Formation and spread


Implausibility of humanoid aliens

Contactee 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. As a cultural phenomenon, con ...
and
Alien Abduction Alien abduction (also called abduction phenomenon, alien abduction syndrome, or UFO abduction) refers to the phenomenon of people reporting what they assure to be the real experience of being kidnapped by extraterrestrial beings and subje ...
folklore often describe encounters with human or humanoid figures and abductors. In his 1964 article ''The Nonprevalence of Humanoids''
George Gaylord Simpson George Gaylord Simpson (June 16, 1902 – October 6, 1984) was an American paleontologist. Simpson was perhaps the most influential paleontologist of the twentieth century, and a major participant in the modern synthesis, contributing '' Tempo ...
claimed that it is extremely unlikely that there exists any form of
extraterrestrial intelligence 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 histo ...
in the
Solar System The Solar SystemCapitalization of the name varies. The International Astronomical Union, the authoritative body regarding astronomical nomenclature, specifies capitalizing the names of all individual astronomical objects but uses mixed "Sola ...
or elsewhere and that, even if they did exist, it was even more unlikely that they would be
humanoid A humanoid (; from English ''human'' and '' -oid'' "resembling") is a non-human entity with human form or characteristics. By the 20th century, the term came to describe fossils which were morphologically similar, but not identical, to those of ...
s. His article was cited and analysed, alongside
evolutionary biologist Evolutionary biology is the subfield of biology that studies the evolutionary processes such as natural selection, common descent, and speciation that produced the diversity of life on Earth. In the 1930s, the discipline of evolutionary biol ...
Theodosius Dobzhansky Theodosius Grigorievich Dobzhansky (; ; January 25, 1900 – December 18, 1975) was a Russian-born American geneticist and evolutionary biologist. He was a central figure in the field of evolutionary biology for his work in shaping the modern ...
’s similar view on the implausibility of the evolution of humanoid extraterrestrial life forms, in the famous 2014 collection of essays '' Archaeology, Anthropology and Interstellar Communication'' edited by astrobiologist
Douglas Vakoch Douglas A. Vakoch ( ; born June 16, 1961) is an American astrobiologist, search for extraterrestrial intelligence (SETI) researcher, psychologist, and president of METI International, a nonprofit research and educational organization devoted to ...
and published by
NASA The National Aeronautics and Space Administration (NASA ) is an independent agencies of the United States government, independent agency of the federal government of the United States, US federal government responsible for the United States ...
in 2014. In the late 1980s, evolutionary biologist and
historian of science The history of science covers the development of science from ancient history, ancient times to the present. It encompasses all three major branches of science: natural science, natural, social science, social, and formal science, formal. Pr ...
Stephen Jay Gould Stephen Jay Gould ( ; September 10, 1941 – May 20, 2002) was an American Paleontology, paleontologist, Evolutionary biology, evolutionary biologist, and History of science, historian of science. He was one of the most influential and widely re ...
put forth his famous
thought experiment A thought experiment is an imaginary scenario that is meant to elucidate or test an argument or theory. It is often an experiment that would be hard, impossible, or unethical to actually perform. It can also be an abstract hypothetical that is ...
that if evolution was rewound and played back again it would likely take a very different course and humans would never evolve, which in addition to his declared view against human-oriented evolutionary
teleonomy Teleonomy is the quality of apparent purposefulness and of goal-directedness of structures and functions in living organisms brought about by natural processes like natural selection. The term derives from two Greek words, τέλος, from τελε ...
, helped shaped the established view that if intelligent extraterrestrials did exist, they would likely not resemble humans. In their book '' Evolving the Alien'' biologist Jack Cohen and mathematician Ian Stewart assumed a similar position about the iconic representation of the
Grey alien Grey aliens, also referred to as Zeta Reticulans, Roswell Greys, or simply, Greys, are purported extraterrestrial beings. They are frequently featured in claims of close encounter and alien abduction. Greys are typically described as having ...
from reports of UFO abduction and close encounters, stating that extraterrestrials from an alien world could not have evolved a physiology so similar to humans'.


Modern popularization

It is unclear exactly when the hypothesis in its complete form was first proposed. Early versions surfaced between the 1970s'
pseudoscientific Pseudoscience consists of statements, beliefs, or practices that claim to be both scientific and factual but are incompatible with the scientific method. Pseudoscience is often characterized by contradictory, exaggerated or unfalsifiable cl ...
literature and 1990s
internet culture Internet culture refers to culture developed and maintained among frequent and active users of the Internet (also known as netizens) who primarily communicate with one another as members of online communities; that is, a culture whose influence ...
, at times associated with the idioms "chrononaut UFOs", "time traveling humans" or simply "future humans". Examples include contributions by Jacques Vallée in his book ''The Invisible College'',
Radford University Radford University is a public university in Radford, Virginia, United States. It is one of the state's eight doctorate-granting public universities. Founded in 1910, Radford offers curricula for undergraduates in more than 100 fields, graduate ...
anthropology professor and former
Forbes ''Forbes'' () is an American business magazine founded by B. C. Forbes in 1917. It has been owned by the Hong Kong–based investment group Integrated Whale Media Investments since 2014. Its chairman and editor-in-chief is Steve Forbes. The co ...
contributor David S. Anderson, Jenny Randles' 2001 book ''Time Storms'',
James Herbert Brennan James Herbert Brennan (5 July 1940 – 1 January 2024) was an Irish lecturer and the author of over 100 fiction and non-fiction books for adults, teens and children, as well as several role-playing games. Early life Brennan was born to grocers ...
's 1997 book ''Time-travel: a new perspective'', which also draws parallels between the time travelers and elements of the
pseudoarchaeological Pseudoarchaeology (sometimes called fringe or alternative archaeology) consists of attempts to study, interpret, or teach about the subject-matter of archaeology while rejecting, ignoring, or misunderstanding the accepted Scientific method, data ...
notion of
ancient astronauts Ancient astronauts (or ancient aliens) refers to a Pseudoscience, pseudoscientific set of beliefs that hold that Extraterrestrial intelligence, intelligent Extraterrestrial life, extraterrestrial beings (alien astronauts) visited Earth and m ...
and Ooparts, and many others. In their 1998 book
The Day After Roswell ''The Day After Roswell'' is an American book about extraterrestrial spacecraft and the Roswell incident. It was written by United States Army Colonel Philip J. Corso, with help from William J. Birnes, and was published as a tell-all memoir by Po ...
, US Army officer Philip J. Corso and American novelist
William J. Birnes William J. "Bill" Birnes (born November 7, 1944) is an American author, the chairman of the board at Sunrise Community Counseling Center, and ufologist. Education Birnes earned a degree from New York University. In 1974, Birnes earned a Ph.D ...
reported that German physicist and engineer Dr
Hermann Oberth Hermann Julius Oberth (; 25 June 1894 – 28 December 1989) was an Austria-Hungary, Austro-Hungarian-born German physicist and rocket pioneer of Transylvanian Saxons, Transylvanian Saxon descent. Oberth supported Nazi Germany's war effort and re ...
believed the craft recovered at Roswell could have been a time machine. On April 27, 2012
History History is the systematic study of the past, focusing primarily on the Human history, human past. As an academic discipline, it analyses and interprets evidence to construct narratives about what happened and explain why it happened. Some t ...
aired the "Time Travelers" episode from season 4 of the series ''Ancient Aliens'' produced by
Prometheus Entertainment Prometheus Entertainment is an American production company, specializing in documentary, reality, and non-fiction television programming and specials. History Prometheus Entertainment was formed in March 1999 by Kevin Burns. It was housed at ...
, available on
Netflix Netflix is an American subscription video on-demand over-the-top streaming service. The service primarily distributes original and acquired films and television shows from various genres, and it is available internationally in multiple lang ...
since 2022. In the same year, the "Time Benders" episode from season 18 of the same series aired on ''History'', exploring other aspects of the concept and featuring more speakers, including American professor of
biological anthropology Biological anthropology, also known as physical anthropology, is a natural science discipline concerned with the biological and behavioral aspects of human beings, their extinct hominin ancestors, and related non-human primates, particularly fro ...
Michael P. Masters from the
Montana Technological University Montana Technological University, popularly known as Montana Tech, is a public university in Butte, Montana. Founded in 1900 as the "Montana State School of Mines", the university became affiliated with the University of Montana in 1994. After un ...
in
Butte, Montana Butte ( ) is a consolidated city-county and the county seat of Silver Bow County, Montana, United States. In 1977, the city and county governments consolidated to form the sole entity of Butte-Silver Bow. The city covers , and, according to the 2 ...
and British journalist and
Ministry of Defence A ministry of defence or defense (see American and British English spelling differences#-ce.2C -se, spelling differences), also known as a department of defence or defense, is the part of a government responsible for matters of defence and Mi ...
civil servant Nick Pope. Pope linked the
Rendlesham Forest incident The Rendlesham Forest incident was a series of reported sightings of unexplained lights near Rendlesham Forest in Suffolk, England, in December 1980, which became linked with Unidentified flying object, UFO landings. The events occurred just o ...
in the UK and the Cabo Valdés Case in Chile with the ''time-traveler hypothesis'', a connection he also explored in his 2014 book (written with John Burroughs,
USAF The United States Air Force (USAF) is the Air force, air service branch of the United States Department of Defense. It is one of the six United States Armed Forces and one of the eight uniformed services of the United States. Tracing its ori ...
, Ret., and Jim Penniston, USAF, Ret.) ''Encounter in Rendlesham Forest: The Inside Story of the World's Best-Documented UFO Incident'', published by
St. Martin's Press St. Martin's Press is a book publisher headquartered in Manhattan in New York City. It is headquartered in the Equitable Building (New York City), Equitable Building. St. Martin's Press is considered one of the largest English-language publishe ...
. The two episodes feature, among others, ufologists Giorgio A. Tsoukalos, Sean David Morton, authors
Erich von Däniken Erich Anton Paul von Däniken (; ; born 14 April 1935) is a Swiss author of several pseudoscientific books which make claims about extraterrestrial influences on early human culture, including the best-selling '' Chariots of the Gods?'', publis ...
,
David Hatcher Childress David Hatcher Childress (born June 1, 1957) is an American author, and the owner of Adventures Unlimited Press, a publishing house established in 1984 specializing in books on unusual topics such as ancient mysteries, unexplained phenomena, pseu ...
, Philip Coppens, and theoretical physicist Ronald L. Mallett, discussing the ''time-traveler hypothesis'' in the contexts of pseudoarchaeology and
pseudohistory Pseudohistory is a form of pseudoscholarship that attempts to distort or misrepresent the historical record, often by employing methods resembling those used in scholarly historical research. The related term cryptohistory is applied to pseud ...
. In 2013, the
Huffington Post ''HuffPost'' (''The Huffington Post'' until 2017, itself often abbreviated as ''HPo'') is an American progressive news website, with localized and international editions. The site offers news, satire, blogs, and original content, and covers ...
published an article describing the time-traveler hypothesis and often referencing the ''Ancient Aliens'' episode. In the article, the author also reports an online
conspiracy theory A conspiracy theory is an explanation for an event or situation that asserts the existence of a conspiracy (generally by powerful sinister groups, often political in motivation), when other explanations are more probable.Additional sources: * ...
about how
U.S. Navy The United States Navy (USN) is the maritime service branch of the United States Department of Defense. It is the world's most powerful navy with the largest displacement, at 4.5 million tons in 2021. It has the world's largest aircraft ...
Commander George W. Hoover allegedly revealed to his son, George Hoover Jr. and later to ufologist
William J. Birnes William J. "Bill" Birnes (born November 7, 1944) is an American author, the chairman of the board at Sunrise Community Counseling Center, and ufologist. Education Birnes earned a degree from New York University. In 1974, Birnes earned a Ph.D ...
, that the
Roswell incident The Roswell Incident started in 1947 with the recovery of debris near Roswell, New Mexico. It later became the basis for conspiracy theories alleging that the United States military recovered a crashed extraterrestrial spacecraft. The debri ...
may have involved human beings from the future rather than aliens and that he believed those "beings" were not extraterrestrial, but rather "extratemporal" in nature. The article goes on linking Hoover's story to other alleged UFO sightings and UFO abduction accounts with similar statements and reports about aliens actually being "humans of the future who have found the technology to overcome the limitations of light speed and time travel paradoxes that keep present day humans from breaching the boundaries of time" and that their "often-humanoid appearance may suggest a link between the way we look today, and what we might look like thousands of years from now." In his 2019 book ''Identified Flying Objects'' and subsequent 2022 volume ''The Extratempestrial Model'', Dr Masters explored more in depth various aspects of the time-traveler hypothesis, including
fringe Fringe may refer to: Arts and music * "The Fringe", or Edinburgh Festival Fringe, the world's largest arts festival * Adelaide Fringe, the world's second-largest annual arts festival * Fringe theatre, a name for alternative theatre * Purple fri ...
ancient astronauts theories and possible future development scenarios of
human anatomy Human anatomy (gr. ἀνατομία, "dissection", from ἀνά, "up", and τέμνειν, "cut") is primarily the scientific study of the morphology of the human body. Anatomy is subdivided into gross anatomy and microscopic anatomy. Gross ...
such as brain growth, craniofacial evolution,
bipedalism Bipedalism is a form of terrestrial locomotion where an animal moves by means of its two rear (or lower) Limb (anatomy), limbs or legs. An animal or machine that usually moves in a bipedal manner is known as a biped , meaning 'two feet' (from ...
,
paedomorphism Neoteny (), also called juvenilization,Montagu, A. (1989). Growing Young. Bergin & Garvey: CT. is the delaying or slowing of the physiological, or somatic, development of an organism, typically an animal. Neoteny in modern humans is more signif ...
and more. Masters was featured on various prominent shows to discuss his contributions to the hypothesis, including amongst others ''Reality Check'' with
Ross Coulthart Ross Coulthart is an Australian investigative journalist and author who has also worked in public relations. He believes that governments are covering up knowledge of UFOs and alien visitations. Early life Coulthart was born in the UK. He later ...
on
News Nation News Nation is an Indian free to air Hindi-language television news channel. News Nation is owned by News Nation Network Pvt Ltd. In September 2022, journalist Anil Yadav resigned from the channel saying that there is pressure from the Utta ...
, ''The Cryptid Factor'' co-hosted by New Zealand journalist
David Farrier David Andrew Farrier (born 25 December 1982) is a New Zealand journalist and actor. He has worked in news and on documentaries, including features on New Zealand television and co-directing the internationally distributed documentary film '' Ti ...
, comedian
Rhys Darby Rhys Montague Darby (born 21 March 1974) is a New Zealand actor and comedian. He is known for his energetic physical comedy routines, telling stories accompanied with mime, and sound effects of things such as machinery and animals. He was nomin ...
, producers
Dan Schreiber Daniel Craig Indiana Schreiber (born 28 April 1984) is an Australian radio producer, writer, podcaster, and comedian based in London. He co-created the BBC Radio 4 panel show ''The Museum of Curiosity'' with host John Lloyd and co-producer Ri ...
and Leon Kirkbeck, and
Sean Patrick Hazlett Sean Patrick Hazlett (born November 17, 1975) is an American horror, science fiction, and fantasy author, editor, and futurist. Biography Sean Patrick Hazlett was born in Wilmington, Delaware on November 17, 1975. He is an Army veteran who se ...
's ''Through the Glass Darkly''. In the same year, TNW also published an article about Masters' extratempestrial model. In June 2022, British
ESA The European Space Agency (ESA) is a 23-member international organization devoted to space exploration. With its headquarters in Paris and a staff of around 2,547 people globally as of 2023, ESA was founded in 1975 in the context of European ...
astronaut An astronaut (from the Ancient Greek (), meaning 'star', and (), meaning 'sailor') is a person trained, equipped, and deployed by a List of human spaceflight programs, human spaceflight program to serve as a commander or crew member of a spa ...
Tim Peake Major (United Kingdom), Major Timothy Nigel Peake (born 7 April 1972) is a retired British European Space Agency astronaut, Army Air Corps (United Kingdom), Army Air Corps officer and author. He is the first British ESA astronaut, the second a ...
mentioned the time-traveler hypothesis in an interview on ''Good Morning Britain''. In a 2023 interview with
Stephen Colbert Stephen Tyrone Colbert ( ; born May 13, 1964) is an American comedian, writer, producer, political commentator, actor, and television host. He is best known for hosting the satirical Comedy Central program ''The Colbert Report'' from 2005 to ...
from ''The Late Show'', American filmmaker
Steven Spielberg Steven Allan Spielberg ( ; born December 18, 1946) is an American filmmaker. A major figure of the New Hollywood era and pioneer of the modern blockbuster, Spielberg is widely regarded as one of the greatest film directors of all time and is ...
also mentions the theory. A number of motives for the time-travelers are put forth in the different media where the hypothesis is discussed, such as historical or
paleoanthropological Paleoanthropology or paleo-anthropology is a branch of paleontology and anthropology which seeks to understand the early development of anatomically modern humans, a process known as hominization, through the reconstruction of evolutionary kinship ...
interest to study our own past, as well as
tourism Tourism is travel for pleasure, and the Commerce, commercial activity of providing and supporting such travel. World Tourism Organization, UN Tourism defines tourism more generally, in terms which go "beyond the common perception of tourism as ...
.


In popular culture

The 1966
Sherwood Schwartz Sherwood Charles Schwartz ( ; November 14, 1916 – July 12, 2011) was an American television screenwriter and producer. He worked on radio shows in the 1940s, but he now is best known for creating the 1960s television series ''Gilligan's Island ...
TV series It's About Time portrays 20th-century astronauts being sent back to the Stone Age after traveling around the earth faster than the speed of light. The astronauts have to contend with the suspicions and superstitions of local cave-dwellers, who regard their advanced technology as sorcery. The astronauts eventually repair their space capsule and return to 1967 with the prehistoric family they befriended. In
Gregory Benford Gregory Benford (born January 30, 1941) is an American science fiction author and astrophysicist who is professor emeritus at the department of physics and astronomy at the University of California, Irvine. He is a contributing editor of ''Reason ...
’s 1980 novel
Timescape ''Timescape'' is a 1980 science fiction novel by American writer Gregory Benford (with unbilled co-author Hilary Foister, Benford's sister-in-law, who is credited as having "contributed significantly to the manuscript"). It won the 1981 Nebula a ...
, scientist Saul Shriffer, a colleague of
Frank Drake Frank Donald Drake (May 28, 1930 – September 2, 2022) was an American astrophysicist and astrobiologist. He began his career as a radio astronomer, studying the planets of the Solar System and later pulsars. Drake expanded his interests ...
at the
SETI Seti or SETI may refer to: Astrobiology * SETI, the search for extraterrestrial intelligence. ** SETI Institute, an astronomical research organization *** SETIcon, a former convention organized by the SETI Institute ** Berkeley SETI Research Cent ...
Project Ozma Project Ozma was a search for extraterrestrial intelligence (SETI) experiment started in 1960 by Cornell University astronomer Frank Drake, at the National Radio Astronomy Observatory, Green Bank at Green Bank, West Virginia. The object of the ...
, believes that a cryptic signal is of extraterrestrial origin, when it fact it had been sent thirty-four years into the past by humans in the future. In his 1984 science fiction/fantasy novel ''Birds of Prey'', American author
David Drake David A. Drake (September 24, 1945 – December 10, 2023) was an American author of science fiction and fantasy literature. A Vietnam War veteran, he worked as a lawyer before becoming a writer in the military science fiction genre. Biography ...
describes six
sterile Sterile or sterility may refer to: *Asepsis, a state of being free from biological contaminants * Sterile (archaeology), a sediment deposit which contains no evidence of human activity *Sterilization (microbiology), any process that eliminates or ...
and mutually
telepathic Telepathy () is the purported vicarious transmission of information from one person's mind to another's without using any known human sensory channels or physical interaction. The term was first coined in 1882 by the classical scholar Frederic ...
sisters who time travel back in time to save humanity from an intelligent but monstrous alien species similar to
social insects Eusociality (Greek 'good' and social) is the highest level of organization of sociality. It is defined by the following characteristics: cooperative brood care (including care of offspring from other individuals), overlapping generations with ...
. The plot suggests that in the future humanity evolves to be quite different from its present form and that the six sisters, along with many other future humans, had become more similar to the insectoid aliens, somewhat of a hybrid between hominids and worker ants or
bees Bees are winged insects closely related to wasps and ants, known for their roles in pollination and, in the case of the best-known bee species, the western honey bee, for producing honey. Bees are a monophyletic lineage within the superfamil ...
, in their attempt to fight them for survival. In
Michael Crichton John Michael Crichton (; October 23, 1942 – November 4, 2008) was an American author, screenwriter and filmmaker. His books have sold over 200 million copies worldwide, and over a dozen have been adapted into films. His literary works heavil ...
's 1987 novel ''
Sphere A sphere (from Ancient Greek, Greek , ) is a surface (mathematics), surface analogous to the circle, a curve. In solid geometry, a sphere is the Locus (mathematics), set of points that are all at the same distance from a given point in three ...
'' (and subsequent film adaptation of the same name), what was thought to be an alien craft at the bottom of the Pacific Ocean turns out to be a ship built by humans from the future. In 1993, Syfy (at the time "Sci-Fi Channel") produced their first original TV film,
Official Denial ''Official Denial'' is a 1993 made-for-television science fiction film directed by Brian Trenchard-Smith and written by Bryce Zabel, starring Parker Stevenson, Dirk Benedict and Erin Gray, about a man who is abducted by aliens. It is eventually ...
, directed by
Brian Trenchard-Smith Brian Medwin Trenchard-Smith (born 1946) is an English-Australian filmmaker and author, known for his idiosyncratic and satirical low-budget genre films. His filmography covers action, science fiction, martial arts, dystopian fiction, comedy, ...
and written by
Bryce Zabel Bryce H. Zabel (born May 17, 1954) is an American television producer, director, writer, and occasional actor. With hundreds of hours of produced film and television credits, Zabel has scripted a trio of mini-series which aired in the U.S. He also ...
, in which a man named Paul Corliss, played by
Parker Stevenson Richard Stevenson Parker Jr. (born June 4, 1952), known professionally as Parker Stevenson, is an American actor best known for playing Frank Hardy in the 1970s series '' The Hardy Boys'' and Craig Pomeroy on the 1990s series ''Baywatch''. Ea ...
, is abducted by aliens who at the end of the movie are revealed to be humans from the future. In the fifteenth comic book of the Belgian series
Blake and Mortimer ''The Adventures of Blake & Mortimer'' is a Belgian comics series created by writer and comics artist Edgar P. Jacobs. It was one of the first book series to appear in the Franco-Belgian comics magazine ''Tintin'' in 1946, and was subsequentl ...
, '' The Strange Encounter'' (2001), British physicist Philip Mortimer and Dr. Walt Kaufman from SUFOS (section of UFO Studies) investigate the corpse Major Lachlan Macquarrie disappeared in the Battle of Saratoga in 1777 after the appearance of three mysterious lights and reappeared in the present under the same circumstances, wearing a
baldric A baldric (also baldrick, bawdrick, bauldrick as well as other rare or obsolete variations) is a belt worn over one shoulder that is typically used to carry a weapon (usually a sword) or other implement such as a bugle or drum. The word m ...
inscribed with the words "Yellow King, 8061, Danger, Light, Plutonian, H,
Poplar trees ''Populus'' is a genus of 25–30 species of deciduous flowering plants in the family Salicaceae, native to most of the Northern Hemisphere. English names variously applied to different species include poplar (), aspen, and cottonwood. The we ...
, Temple 1954". The same night of the autopsy, Mortimer fights an intruder wearing identical 18th century clothes and anachronistic items to Macquarrie. In the clash, the intruder falls and dies, revealing alien-like features under a human-suit. Based on the mysterious clue found on Major Macquarrie, they hypothesize that the alien could be from Pluto only to instantly realize that his physiology is unsuitable to survive the planet's harsh environment. Later, the dwarf-like alien scientist Dr. Z'ong reveals to Mortimer that commander Basam Damdu, absolute dictator of the Yellow Empire from '' The Secret of the Swordfish'', along with his army, including Zong himself, are humans from 8061, a time when the earth is deserted due to a long nuclear war in the 21st century and humans are an endangered species with alien-like deformities. Some of these plot elements are similar to another earlier episode ''
The Time Trap "The Time Trap" is the twelfth episode of the first season of the American animated science fiction television series '' Star Trek: The Animated Series''. It first aired in the NBC Saturday morning lineup on November 24, 1973, and was writ ...
'', where similar events such a post-nuclear dystopian Earth and a rising world order led by a tyrant take place in the 51st century, year 5060. The English
progressive rock Progressive rock (shortened as prog rock or simply prog) is a broad genre of rock music that primarily developed in the United Kingdom through the mid- to late 1960s, peaking in the early-to-mid-1970s. Initially termed " progressive pop", the ...
band
Yes Yes or YES may refer to: * An affirmative particle in the English language; see yes and no Education * YES Prep Public Schools, Houston, Texas, US * Young Eisner Scholars, in Los Angeles, New York City, Chicago, and Appalachia, US * Young Ep ...
wrote a song titled ''Aliens (Are Only Us from the Future)'' entirely dedicated to the subject. The track had been performed during Yes's In the Present world tour, but was never released, until the band's bassist
Chris Squire Christopher Russell Edward Squire (4March 1948 – 27June 2015) was an English musician, singer and songwriter best known as the bassist and backing vocalist of the progressive rock band Yes. He was the longest-serving original member, having r ...
decided to finally published it in 2012 together with English rock band
Genesis Genesis may refer to: Religion * Book of Genesis, the first book of the biblical scriptures of both Judaism and Christianity, describing the creation of the Earth and of humankind * Genesis creation narrative, the first several chapters of the Bo ...
’s guitarist
Steve Hackett Stephen Richard Hackett (born 12 February 1950) is an English guitarist who gained prominence as the lead guitarist of the progressive rock band Genesis (band), Genesis from 1971 to 1977. Hackett contributed to six Genesis studio albums, three l ...
and
Travis Travis may refer to: People and fictional characters *Travis (given name), a list of people and fictional characters *Travis (surname), a list of people Places in the United States *Travis, Staten Island, a neighborhood *Travis Air Force Base, a ...
singer Fran Healy as co-writer, calling it simply "Aliens", on their only studio album, '' A Life Within a Day''.
Jordan Peele Jordan Haworth Peele (born February 21, 1979) is an American actor, comedian and filmmaker. He is known for his film and television work in the Comedy film, comedy and Horror film, horror genres. He has received List of awards and nominations r ...
's 2022
horror movie Horror is a film genre that seeks to elicit physical or psychological fear in its viewers. Horror films often explore dark subject matter and may deal with transgressive topics or themes. Broad elements of the genre include monsters, apocalyp ...
'' Nope'' references "''futuristic humans coming back in time to stop us from destroying the planet''." The 2014 movie '' Interstellar'' contains
deus ex machina ''Deus ex machina'' ( ; ; plural: ''dei ex machina''; 'God from the machine') is a plot device whereby a seemingly unsolvable problem in a story is suddenly or abruptly resolved by an unexpected and unlikely occurrence. Its function is general ...
beings who built the tesseract environment inside the
supermassive black hole A supermassive black hole (SMBH or sometimes SBH) is the largest type of black hole, with its mass being on the order of hundreds of thousands, or millions to billions, of times the mass of the Sun (). Black holes are a class of astronomical ...
Gargantua and possibly placed the
wormhole A wormhole is a hypothetical structure that connects disparate points in spacetime. It can be visualized as a tunnel with two ends at separate points in spacetime (i.e., different locations, different points in time, or both). Wormholes are base ...
near
Saturn Saturn is the sixth planet from the Sun and the second largest in the Solar System, after Jupiter. It is a gas giant, with an average radius of about 9 times that of Earth. It has an eighth the average density of Earth, but is over 95 tim ...
that will lead the crew of the Endurance to three potentially habitable
exoplanet An exoplanet or extrasolar planet is a planet outside the Solar System. The first confirmed detection of an exoplanet was in 1992 around a pulsar, and the first detection around a main-sequence star was in 1995. A different planet, first det ...
s. These "superior" entities – called '' bulk-beings'' by American physicist
Kip Thorne Kip Stephen Thorne (born June 1, 1940) is an American theoretical physicist and writer known for his contributions in gravitational physics and astrophysics. Along with Rainer Weiss and Barry C. Barish, he was awarded the 2017 Nobel Pri ...
in
The Science of Interstellar ''The Science of Interstellar'' is a non-fiction book by American theoretical physicist and Nobel laureate Kip Thorne, with a foreword by Christopher Nolan. The book was initially published on November 7, 2014 by W. W. Norton & Company. This is ...
, and referred to by the characters of the movie as "they" – are later revealed by the
protagonist A protagonist () is the main character of a story. The protagonist makes key decisions that affect the plot, primarily influencing the story and propelling it forward, and is often the character who faces the most significant obstacles. If a ...
Cooper to be humans from the future who evolved to exist in five dimensions, guiding him and his daughter Murph through the necessary steps to crack the equation of
quantum gravity Quantum gravity (QG) is a field of theoretical physics that seeks to describe gravity according to the principles of quantum mechanics. It deals with environments in which neither gravitational nor quantum effects can be ignored, such as in the v ...
and save humanity.


Terminology and connection to other theories

Although in his books and publications Dr Masters uses the
neologism In linguistics, a neologism (; also known as a coinage) is any newly formed word, term, or phrase that has achieved popular or institutional recognition and is becoming accepted into mainstream language. Most definitively, a word can be considered ...
"''extratempestrial''" to describe his model and the alleged beings piloting the UFOs, the overall idea has been dubbed "the time-traveler hypothesis" by executive director of nonprofit
Mutual UFO Network The Mutual UFO Network (MUFON) is a US-based non-profit organization composed of civilian volunteers who study reported UFO sightings. It is one of the oldest and largest organizations of its kind, claiming more than 4,000 members worldwide ...
(MUFON), Jan Harzan. The time-traveler hypothesis and the
interdimensional hypothesis The interdimensional UFO hypothesis (IUH) is the proposal that unidentified flying object (UFO) sightings are the result of experiencing other "dimensions" that coexist separately alongside our own. The hypothesis has been advanced by ufologists ...
overlap by a certain degree. People in the ufology community, such as former MUFON director for the state of
Pennsylvania Pennsylvania, officially the Commonwealth of Pennsylvania, is a U.S. state, state spanning the Mid-Atlantic (United States), Mid-Atlantic, Northeastern United States, Northeastern, Appalachian, and Great Lakes region, Great Lakes regions o ...
John Ventre in an interview with KDKA News Radio, as well as American parapsychologist and
engineer Engineers, as practitioners of engineering, are professionals who Invention, invent, design, build, maintain and test machines, complex systems, structures, gadgets and materials. They aim to fulfill functional objectives and requirements while ...
Harold E. Puthoff, refer to the two interchangeably. Dr Masters has stated that he considers his extratempestrial model a subcategory of the interdimensional hypothesis. Indeed, from a more scientific standpoint – albeit controversially – within the framework of the
many-worlds interpretation The many-worlds interpretation (MWI) is an interpretation of quantum mechanics that asserts that the universal wavefunction is Philosophical realism, objectively real, and that there is no wave function collapse. This implies that all Possible ...
of
quantum mechanics Quantum mechanics is the fundamental physical Scientific theory, theory that describes the behavior of matter and of light; its unusual characteristics typically occur at and below the scale of atoms. Reprinted, Addison-Wesley, 1989, It is ...
,
temporal paradox A temporal paradox, time paradox, or time travel paradox, is a paradox, an apparent contradiction, or logical contradiction associated with the idea of time travel or other foreknowledge of the future. While the notion of time travel to the futu ...
es could be avoided if the time traveler would move from one dimension, or parallel universe, or timeline, to another. Similarly to how the
extraterrestrial hypothesis The extraterrestrial hypothesis (ETH; ''synonymous with'' interplanetary aircraft ) proposes that some unidentified flying objects (UFOs) are best explained as being physical spacecraft occupied by intelligent extraterrestrial organisms ( non- ...
represents a potential solution to Fermi's paradox, the time-traveler hypothesis provides an alternative explanation for the absence of future time travelers. In an interview with
Nova A nova ( novae or novas) is a transient astronomical event that causes the sudden appearance of a bright, apparently "new" star (hence the name "nova", Latin for "new") that slowly fades over weeks or months. All observed novae involve white ...
on
PBS The Public Broadcasting Service (PBS) is an American public broadcaster and non-commercial, free-to-air television network based in Arlington, Virginia. PBS is a publicly funded nonprofit organization and the most prominent provider of educat ...
, astrophysicist and
skeptic Skepticism ( US) or scepticism ( UK) is a questioning attitude or doubt toward knowledge claims that are seen as mere belief or dogma. For example, if a person is skeptical about claims made by their government about an ongoing war then the p ...
Carl Sagan Carl Edward Sagan (; ; November 9, 1934December 20, 1996) was an American astronomer, planetary scientist and science communicator. His best known scientific contribution is his research on the possibility of extraterrestrial life, including e ...
stated that there's a possibility that time travelers from the future are already here and we simply don't have the means or the knowledge to recognize them as such, or have other names for them, such as "''UFOs or ghosts or
hobgoblin A hobgoblin is a household spirit, appearing in English folklore, once considered helpful, but which since the spread of Christianity has often been considered mischievous. Shakespeare identifies the character of Puck in his '' A Midsummer Nigh ...
s or
fairies A fairy (also called fay, fae, fae folk, fey, fair folk, or faerie) is a type of mythical being or legendary creature, generally described as anthropomorphism, anthropomorphic, found in the folklore of multiple European cultures (including Cel ...
''" and that he doesn't think "''that the fact that we're not obviously being visited by time travelers shows that time travel is impossible.''"


Criticism

The time-traveler hypothesis is considered pseudoscientific. American astrophysicist
Neil deGrasse Tyson Neil deGrasse Tyson ( or ; born October 5, 1958) is an American astrophysics, astrophysicist, author, and science communication, science communicator. Tyson studied at Harvard University, the University of Texas at Austin, and Columbia Univ ...
has referred to the hypothesis as illogic. UFO
skeptic Skepticism ( US) or scepticism ( UK) is a questioning attitude or doubt toward knowledge claims that are seen as mere belief or dogma. For example, if a person is skeptical about claims made by their government about an ongoing war then the p ...
Robert Sheaffer Robert Sheaffer (born 1949) is an American freelance writer and UFO skeptic. He is a paranormal investigator of unidentified flying objects, having researched many sightings and written critiques of the hypothesis that UFOs are alien spacecra ...
criticized Masters' work because it relies on "the belief that time travel is not only possible, but real." British
astronomer An astronomer is a scientist in the field of astronomy who focuses on a specific question or field outside the scope of Earth. Astronomers observe astronomical objects, such as stars, planets, natural satellite, moons, comets and galaxy, galax ...
and
science writer Science journalism conveys reporting about science to the public. The field typically involves interactions between scientists, journalists and the public. Origins Modern science journalism originated in weather and other natural history obs ...
David J. Darling has stated that the
extraterrestrial hypothesis The extraterrestrial hypothesis (ETH; ''synonymous with'' interplanetary aircraft ) proposes that some unidentified flying objects (UFOs) are best explained as being physical spacecraft occupied by intelligent extraterrestrial organisms ( non- ...
and the time-travel hypothesis are equally reasonable yet highly unlikely and unnecessary and that, although certain aerial phenomena have indeed eluded identification, there is no apparent reason to justify the claim that they're artificial and/or not of this world. Furthermore, he added that "if some UFOs are 'alien' craft, it's just as reasonable to suppose that they might be time machines from our own future than that they're spacecraft from other stars. The problem is the 'if.' (...) Outside of the popular mythos of flying saucers and archetypal, big-brained aliens, there's precious little credible evidence that they exist. So, my issue with the (Masters') book is not the ingenuity of its thesis, but the fact that there's really no need for such a thesis in the first place." Referring to the Rendlesham incident, science writer and UFO skeptic
Ian Ridpath Ian William Ridpath (born 1 May 1947, in Ilford, Essex) is an English science writer and broadcaster best known as a popularizer of astronomy and a biographer of constellation history. As a UFO sceptic, he investigated and explained the Rendle ...
wrote that time-traveling UFO allegations from retired sergeant Jim Penniston's hypnosis session may have been influenced by him watching the sci-fi film
Official Denial ''Official Denial'' is a 1993 made-for-television science fiction film directed by Brian Trenchard-Smith and written by Bryce Zabel, starring Parker Stevenson, Dirk Benedict and Erin Gray, about a man who is abducted by aliens. It is eventually ...
(which aired in 1993 and released on video in May 1994, a few months before Penniston's claim surfaced in September of the same year), suggesting a Life imitates art situation, with the film causing Penniston's
false memory In psychology, a false memory is a phenomenon where someone recalls something that did not actually happen or recalls it differently from the way it actually happened. Suggestibility, activation of associated information, the incorporatio ...
. In February 2022, American futurist and science communicator
Isaac Arthur Isaac Albert Arthur (born September 20, 1980) is a science communication, science educator, YouTuber, futurist and president of the American National Space Society (NSS). He is best known as producer of his YouTube channel, ''Science & Futurism Wi ...
discussed the odds against the time-traveler hypothesis on episode 23 ''Are Aliens Just Time Traveling Humans'' of the podcast ''It's Probably (not) Aliens'', specifically
debunking A debunker is a person or organization that exposes or discredits claims believed to be false, exaggerated, or pretentious. "to expose or excoriate (a claim, assertion, sentiment, etc.) as being pretentious, false, or exaggerated: to debunk adv ...
the concept as it was exposed on the ‘Time Travel’ episode of the Ancient Aliens series. When asked about the plausibility of UFOs being future humans,
Queensland University The University of Queensland is a public research university located primarily in Brisbane, the capital city of the Australian state of Queensland. Founded in 1909 by the Queensland parliament, UQ is one of the six sandstone universities, an i ...
quantum physicist Fabio Costa told ''
Popular Mechanics ''Popular Mechanics'' (often abbreviated as ''PM'' or ''PopMech'') is a magazine of popular science and technology, featuring automotive, home, outdoor, electronics, science, do it yourself, and technology topics. Military topics, aviation an ...
'': "In a sense, traveling back in time requires two doors, one in the future and one in the past. You can only travel back if someone has opened the door to the past. So, people from the future cannot visit us... unless someone has already invented a time machine and nobody knows! (...) That leaves open the question: where is the time machine?"


See also

*
Time travel Time travel is the hypothetical activity of traveling into the past or future. Time travel is a concept in philosophy and fiction, particularly science fiction. In fiction, time travel is typically achieved through the use of a device known a ...
*
Posthuman Posthuman or post-human is a concept originating in the fields of science fiction, futurology, contemporary art, and philosophy that means a person or entity that exists in a state beyond being human. The concept aims at addressing a variety of ...
ism *
Transhumanism Transhumanism is a philosophical and intellectual movement that advocates the human enhancement, enhancement of the human condition by developing and making widely available new and future technologies that can greatly enhance longevity, cogni ...
*
Timeline of the far future While the future cannot be predicted with certainty, present understanding in various scientific fields allows for the prediction of some far-future events, if only in the broadest outline. These fields include astrophysics, which studies ho ...
*
Longtermism Longtermism is the ethical view that positively influencing the long-term future is a key moral priority of our time. It is an important concept in effective altruism and a primary motivation for efforts that aim to reduce existential risks to h ...
*
Speculative Evolution Speculative evolution is a subgenre of science fiction and an artistic movement focused on hypothetical scenarios in the evolution of life, and a significant form of Biology in fiction, fictional biology. It is also known as speculative biology an ...
*
Cryptoterrestrial hypothesis The cryptoterrestrial hypothesis proposes that reports of flying saucers or UFOs are evidence of a hidden, Earth-based, technologically-advanced civilization. Aaron John Gulyas, a scholar of conspiracy theories, characterized the so-called hypothe ...
* Psychosocial hypothesis *
Interdimensional hypothesis The interdimensional UFO hypothesis (IUH) is the proposal that unidentified flying object (UFO) sightings are the result of experiencing other "dimensions" that coexist separately alongside our own. The hypothesis has been advanced by ufologists ...
* Space animal hypothesis


References

{{UFOs Pseudoscience Time travel UFO conspiracy theories Ufology