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Ancient Aliens· Season 21 · Episode 5

The Top Ten Secret Projects

S21E05·7.8·March 7, 2025·1h·History

Ancient Aliens is counting down ten of history's most compelling -- and covert -- projects that study the UFO phenomenon. From clandestine government organizations to agents that silence UFO witnesses and secret programs to reverse-engineer alien technology, are these mysterious projects evidence of contact with extraterrestrials?

Streaming on (US) NetflixAmazon Prime VideoDisney PlusHuluPhiloPure FlixHISTORY Vault Apple TV ChannelHistorySee all

#2In Season 21of 17 rated episodes
#93All-timeof 291 rated episodes
+0.3vs season avgSeason 21 averages 7.5
2025First airedMarch 7, 2025

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