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Published: 1st September 2021

Citation: Astronist Institution. (2021). Exo-originism. Available: Last accessed [enter date e.g. 1st Sept 2021].

noun  Astroeschatology

a collection or category of related theories sharing the belief that extraterrestrial sapient life played a central role in the origins of human life and its evolution to an intelligent species.


Exo-original | ˈ ɛksəʊˈ ɒrɪdʒɪn(ə)l | adjective
Exo-originist | ˈ ɛksəʊˈ ɒrɪdʒɪnɪst | adjective & noun
Exo-originistic | ˈ ɛksəʊˈ ɒrɪdʒɪnɪstɪk | adjective


Astro-English: from Astronese, the prefix exo- denotes that which comes from “outside” or “from beyond” in order to mean extraterrestrial life; coupling this with the word originism to denote “a belief about the origins of something” ultimately comes to form the general principle that “extraterrestrial life was involved in the origins of humanity."

Encyclopaedic entry for “Exo-originism” on

© 2021 by the Astronist Institution.

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