Including results for alien theory episode.
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Extraterrestrial Theory of Human Origins | Ancient Aliens (S9, E19) | Full Episode
43:15
Extraterrestrial Theory of Human Origins | Ancient Aliens (S9, E19) | Full Episode
127.6K views3 weeks ago
YouTubeHISTORY
The Evidence For Alien Theories *MARATHON* | Ancient Aliens
2:12:19
The Evidence For Alien Theories *MARATHON* | Ancient Aliens
176.1K views2 months ago
YouTubeHISTORY
Prophecies from Beyond | Ancient Aliens
35:01
Prophecies from Beyond | Ancient Aliens
689.7K views1 month ago
YouTubeHISTORY
Could Alien Technology Really Exist? | The Universe | Marathon
2:12:25
Could Alien Technology Really Exist? | The Universe | Marathon
224K views2 months ago
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The UFO Superhighway (S20, E8) | Ancient Aliens | Full Episode
42:17
The UFO Superhighway (S20, E8) | Ancient Aliens | Full Episode
283K views2 months ago
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Underground Aliens Emerge Across the Globe (S2, E4) | Ancient Aliens | Full Episode
44:14
Underground Aliens Emerge Across the Globe (S2, E4) | Ancient Aliens | Full Episode
307.6K views4 months ago
YouTubeHISTORY
Chariots of Interstellar Gods (S1, E1) | Ancient Aliens | Full Episode
1:30:55
Chariots of Interstellar Gods (S1, E1) | Ancient Aliens | Full Episode
171.6K views3 months ago
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7:51
Could Aliens Look Just Like Humans? (S1) | Ancient Aliens
65.7K views4 months ago
YouTubeHISTORY
33:52
Extraterrestrial Mysteries on the Ocean Floor | Ancient Aliens
1.3M views3 months ago
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1:28:18
Did Ancient Civilizations Have Technology More Advanced Than Ours? | Ancient Aliens | Full Episode
373.9K views3 months ago
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42:26
The Extraterrestrial Genetic Theory | Ancient Aliens
87.4K views2 months ago
YouTubeHISTORY
1:28:19
Is the Moon a Giant Alien Spaceship? (S1, E4) | Ancient Aliens | Full Episode
60.9K views4 months ago
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0:51
Countdown to Disclosure: Alien DNA Theory
98.2K views3 months ago
YouTubeThe Why Files
40:21
The Most Shocking Alien Encounters Ever | Ancient Aliens
1.4M views4 months ago
YouTubeHISTORY
37:29
Were the Ancient Gods Actually Aliens? | Ancient Aliens
584.6K views4 months ago
YouTubeHISTORY
20:20
The Truth Behind These Unexplained Phenomena | Ancient Aliens
204K views4 months ago
YouTubeHISTORY
44:14
Who Are the Greys Visiting Earth for Millennia? (S4, E3) | Ancient Aliens | Full Episode
148.9K views5 months ago
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2:11:22
Mysteries That Challenge Human Origins *Marathon* | Ancient Aliens
977.9K views5 months ago
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26:52
Mysteries That Span Civilizations and Time | Ancient Aliens
479.9K views5 months ago
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1:28:19
Proof of Visitations from the Middle Ages to Modern Times (S1, E5) | Ancient Aliens | Full Episode
147K views4 months ago
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2:07:27
Forbidden Caves Inside Antarctic Pyramids *Marathon* | Ancient Aliens
792.1K views5 months ago
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30:56
Egypt’s Greatest Secrets and Alien Theories | Ancient Aliens
341.8K views4 months ago
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29:52
Warnings From Beyond Earth | Ancient Aliens
121.7K views4 months ago
YouTubeHISTORY
42:17
The Sumerian Object NASA Can't Explain (S20, E7) | Ancient Aliens | Full Episode
967.5K views2 months ago
YouTubeHISTORY
2:56:25
Are the Gods Really Returning? *Marathon* | Ancient Aliens
1M views8 months ago
YouTubeHISTORY
40:21
The Mystery of Alien Travel Through History | Ancient Aliens
1.4M views6 months ago
YouTubeHISTORY
3:43:03
Most CHILLING Alien Theories *MARATHON* | Ancient Aliens
1.1M views8 months ago
YouTubeHISTORY
48:49
Inside the Mystery of the Greys | Ancient Aliens
1.6M views8 months ago
YouTubeHISTORY
2:12:17
Alien Theories You Have to See to Believe | Ancient Aliens | Marathon | History
529.1K viewsJun 6, 2025
YouTubeHISTORY
18:23
Unexplained Phenomena Across the American West | Ancient Aliens
224K views6 months ago
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