Articles related to various pseudohistorical claims that intelligent alien beings have visited Earth in the distant past, and that this contact is linked to the origins or development of human cultures, religions, or technologies.
Subcategories
This category has the following 3 subcategories, out of 3 total.
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Pages in category "Ancient astronaut speculation"
The following 22 pages are in this category, out of 22 total. This list may not reflect recent changes.