Did intelligent beings from outer space visit Earth thousands of years ago? From the age of the dinosaurs to ancient Egypt, from early cave drawings to continued mass sightings in the US, each episode gives historic depth to the questions, speculations, provocative controversies, first-hand accounts and grounded theories surrounding this age old debate.
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Networks
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StatusReturning Series
TypeDocumentary
First Aired4/20/2010
Last Aired3/5/2026
Seasons22
Episodes285
LanguageEnglish
CountryUnited States
Currently in production
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22
Seasons
285
Episodes
42m
Per Episode
2010
First Aired
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Seasons
22 seasons
