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Although the extraterrestrial hypothesis (ETH) as a phrase is a comparatively new concept, one which owes much to the flying saucer sightings of the 1940s–1960s, its origins can be traced back to a number of earlier events, such as the now-discredited Martian canals and ancient Martian civilization promoted by astronomer Percival Lowell, popular culture including the writings of H. G. Wells ...
Perspectives on the abduction phenomenon are explanations that are intended to explain claims of abduction and examination by apparently otherworldly beings. The main differences between these perspectives lie in the credence ascribed to the claims. Perspectives range from the assertion that all abductions are hoaxes to the belief that the ...
Dark forest hypothesis. The dark forest hypothesis is the conjecture that many alien civilizations exist throughout the universe, but they are both silent and hostile, maintaining their undetectability for fear of being destroyed by another hostile and undetected civilization. [ 1] It is one of many possible explanations of the Fermi paradox ...
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 ...
The communication with extraterrestrial intelligence ( CETI) is a branch of the search for extraterrestrial intelligence (SETI) that focuses on composing and deciphering interstellar messages that theoretically could be understood by another technological civilization. [1] The best-known CETI experiment of its kind was the 1974 Arecibo message ...
The former intelligence officer said he had not seen any nonhuman bodies personally and responded to many questions by stating that he could not discuss details in an open forum but could brief ...
The interdimensional hypothesis is a proposal that unidentified flying object (UFO) sightings are the result of experiencing other "dimensions" that coexist separately alongside our own [ 1] in contrast with either the extraterrestrial hypothesis that suggests UFO sightings are caused by visitations from outside the Earth or the psychosocial ...
For many people, the word “ghost” conjures up one of two images: A menacing apparition that terrorizes unsuspecting homeowners, or a cute trick-or-treater covered in a white bed sheet.