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  2. Alien - Wikipedia

    en.wikipedia.org/wiki/Alien

    Alien primarily refers to: Alien (law), a person in a country who is not a national of that country Enemy alien, the above in times of war; Extraterrestrial life ...

  3. Alien (law) - Wikipedia

    en.wikipedia.org/wiki/Alien_(law)

    The usage of the term "alien" dates back to 1790, when it was used in the Naturalization Act and then 1798 when it was used in the Alien and Sedition Acts. [26] Although the INA provides no overarching explicit definition of the term "illegal alien", it is mentioned in a number of provisions under title 8 of the US code. [27]

  4. Extraterrestrial life - Wikipedia

    en.wikipedia.org/wiki/Extraterrestrial_life

    Extraterrestrial life, or alien life (colloquially, ... At the basic level, membranes define the limit of a cell, between it and its environment, while remaining ...

  5. 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]

  6. Xenomorph - Wikipedia

    en.wikipedia.org/wiki/Xenomorph

    Due to horizontal gene transfer during the gestation period, the alien also takes on some of the basic physical attributes of the host from which it was born (something noticed by Ripley in Alien 3, when the xenomorph plaguing the complex moved on four limbs, having gestated within a quadruped (a dog in the theatrical release and an ox in the ...

  7. Extraterrestrials in fiction - Wikipedia

    en.wikipedia.org/wiki/Extraterrestrials_in_fiction

    The Alien invasion is a common trope of alien fiction. Extraterrestrials in fiction are portrayed in several different ways. Extraterrestrial intelligence may be lower, similar, higher or exponentially higher than that of humans, or completely alien and impossible to be compared. [8]

  8. Extraterrestrial intelligence - Wikipedia

    en.wikipedia.org/wiki/Extraterrestrial_intelligence

    Intelligence is, along with the more precise concept of sapience, used to describe extraterrestrial life with similar cognitive abilities as humans. Another interchangeable term is sophoncy, being wise or wiser, first coined by Karen Anderson and published in the 1966 works by her husband Poul Anderson.

  9. Enemy alien - Wikipedia

    en.wikipedia.org/wiki/Enemy_alien

    The term "enemy alien" referred only to non-American citizens who were nationals of Axis countries. Included in this number were thousands of resident aliens who were prohibited from applying for citizenship by race-based naturalization laws; when war was declared against their native countries, their status changed from "resident" to "enemy ...