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  2. Extraterrestrial life - Wikipedia

    en.wikipedia.org/wiki/Extraterrestrial_life

    For example, during the Barney and Betty Hill incident, the first recorded claim of an alien abduction, the couple reported that they were abducted and experimented on by aliens with oversized heads, big eyes, pale grey skin, and small noses, a description that eventually became the grey alien archetype once used in works of fiction. [173]

  3. Zoo hypothesis - Wikipedia

    en.wikipedia.org/wiki/Zoo_hypothesis

    An extraterrestrial society with advanced remote-sensing technologies may conclude that direct contact with neighbors confers added risks to itself without an added benefit. A variant on the zoo hypothesis suggested by former MIT Haystack Observatory scientist John Allen Ball is the "laboratory" hypothesis, in which humanity is being subjected ...

  4. List of alleged extraterrestrial beings - Wikipedia

    en.wikipedia.org/wiki/List_of_alleged...

    Grey-skinned (sometimes green-skinned) humanoids, usually 1 m (3.3 ft) tall, hairless, with large heads, black almond-shaped eyes, nostrils without a nose, slits for mouths, no ears and 3–4 fingers including thumb. Greys have been the predominant extraterrestrial beings of alleged alien contact since the 1960s. [5] Hopkinsville goblin [6] [7] [8]

  5. History of the extraterrestrial life debate - Wikipedia

    en.wikipedia.org/wiki/History_of_the...

    The idea of extraterrestrial life, which was once a radical notion held by limited and specific people, became an accepted idea discussed in college classrooms. The change was also possible because of the changes in religious and philosophical thinking that took place at the time. [25] Besides that, there was much speculation.

  6. Interdimensional UFO hypothesis - Wikipedia

    en.wikipedia.org/wiki/Interdimensional_UFO...

    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 hypothesis that argues UFO sightings are best ...

  7. Culture of extraterrestriality - Wikipedia

    en.wikipedia.org/wiki/Culture_of_extraterrestriality

    A culture of extraterrestriality is the cultural imagination and description of otherworldlyness, alienness or outright outer space, characterizing the other through extraterrestrial space, [1] [2] beyond mere extraterritoriality or periphery, being the space that is imagined or described as extraterrestrial, or simply any space outside a described land.

  8. Contactee - Wikipedia

    en.wikipedia.org/wiki/Contactee

    Carl Sagan has expressed skepticism about contactees and alien contact in general, remarking that aliens seem very happy to answer vague questions but when confronted with specific, technical questions they are silent: Occasionally, by the way, I get a letter from someone who is in "contact" with an extraterrestrial who invites me to "ask ...

  9. Extraterrestrial - Wikipedia

    en.wikipedia.org/wiki/Extraterrestrial

    Extraterrestrial: The First Sign of Intelligent Life Beyond Earth, 2021 popular science book by Avi Loeb Extraterrestrial (2011 film) , a 2011 Spanish film by Nacho Vigalondo Extraterrestrial (2014 film) , a 2014 American film by Colin Minihan and written by The Vicious Brothers