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Extraterrestrials in fiction
Y 100%
55th percentile in Characters
Fictional depictions of extraterrestrial life
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An extraterrestrial or alien is a lifeform that did not originate on Earth. (The word extraterrestrial means 'outside Earth'.) Extraterrestrials are a common theme in modern science-fiction, and also appeared in much earlier works such as the second-century parody True History by Lucian of Samosata.

Instance of
class of fictional entities
Subclass of
Character (arts)
Different from
fictional extraterrestrial species
fictional extraterrestrial
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