Including results for alien theory 2021.
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Alien Theories You Have to See to Believe | Ancient Aliens | Marathon | History
2:12:17
Alien Theories You Have to See to Believe | Ancient Aliens | Marathon | History
416.3K views10 months ago
YouTubeHISTORY
Big Alien Theory
40:56
Big Alien Theory
82.2K views1 month ago
YouTubeIsaac Arthur
Alien Theory: Comet 3I/ATLAS Enters Solar System With Unusual Tail Shift | The Breakfast Club
30:49
Alien Theory: Comet 3I/ATLAS Enters Solar System With Unusual Tail Shift | The Breakfast Club
9.1K views5 months ago
YouTubeCNN-News18
Why haven’t we found aliens? A physicist shares the most popular theories. | Brian Cox
12:47
Why haven’t we found aliens? A physicist shares the most popular theories. | Brian Cox
2.9M viewsSep 29, 2023
YouTubeBig Think
The Hybrid Theory: Human or Alien? | Ancient Aliens | History
32:32
The Hybrid Theory: Human or Alien? | Ancient Aliens | History
919.3K views5 months ago
YouTubeHISTORY
The ancient alien theory sounded possible - until the missing evidence became impossible to ignore
31:07
The ancient alien theory sounded possible - until the missing evidence became impossible to ignore
3 weeks ago
MSNIsaac Arthur
Inside Look At Area 51 *New Theories Revealed!* | Ancient Aliens | History
34:00
Inside Look At Area 51 *New Theories Revealed!* | Ancient Aliens | History
9M views11 months ago
YouTubeHISTORY
23:20
Linda Moulton Howe's BIGGEST Theories Revealed | Ancient Aliens | History
311.3K views11 months ago
YouTubeHISTORY
50:46
Uncovering Alien Conspiracies | The Proof Is Out There | History
179.5K views11 months ago
YouTubeHISTORY
3:29
Mystery Object Moving Unusually Towards Earth! | Comet or An Alien Probe? | WION
176.5K views8 months ago
YouTubeWION
1:18:32
The NEW Complete Alien Timeline (1979 - 2025)
96.4K views4 months ago
YouTubeNerdist
33:04
Outer Space’s Most Baffling Mysteries | Ancient Aliens | History
772.7K viewsMar 4, 2025
YouTubeHISTORY
1:18:48
PROOF* THAT ALIENS ARE REAL!!! (*my theory) with Neil deGrasse Tyson
326.1K views1 month ago
YouTubeHasan Minhaj
4:34
The Pentagon’s Mysterious UFO Program (S21) | Ancient Aliens | History
38K views11 months ago
YouTubeHISTORY
20:43
Top 20 Alien Conspiracy Theories
93.5K viewsNov 14, 2024
YouTubeWatchMojo.com
8:38
Alien: Earth — Theories That Actually Fit the Timeline
49.1K views7 months ago
YouTubeScreenRant
44:25
Experts Reveal What Really Happened (Full Episode) | Area 51: The CIA's Secret
9M viewsJun 23, 2024
YouTubeNational Geographic
59:11
Ancient Aliens: TOP UFO MYSTERIES OF 2025 | Part 1
354.2K views4 months ago
YouTubeHISTORY
1:06:43
Alien Origins | Aliens On Earth: The True Story Of Human's Origin | Full Sci-Fi Movie | Free Movie
4.1K views6 months ago
YouTubeV Movies
1:18:30
Brian Cox: Why black holes could hold the secret to time and space | Full Interview
3.8M views9 months ago
YouTubeBig Think
34:38
Groundbreaking Alien Connections of India | Ancient Aliens | History
877.1K viewsMar 25, 2025
YouTubeHISTORY
7:43
Lizard People Conspiracy Theory Explained
2.8M viewsDec 6, 2019
YouTubeBuzzFeed Unsolved Network
2:02
Alien: Romulus | Official Trailer
13.2M viewsJun 4, 2024
YouTube20th Century Studios
0:42
Alien Earth: Episode 6 - NEW TRAILER | 4K
213.4K views7 months ago
YouTubeAD_edits
1:03
Alien: Romulus | Teaser Trailer
22.2M viewsMar 20, 2024
YouTube20th Century Studios
18:31
Ancient Aliens: Inside Area 51's UFO Secrets | History
5.8M viewsMay 9, 2024
YouTubeHISTORY
42:15
The Global Threat (Full Episode) | UFOs: Investigating the Unknown
6.7M viewsFeb 24, 2024
YouTubeNational Geographic
Un Exobiologiste analyse les aliens dans les films (Prometheus, La Guerre des Mondes, Predator...)
15:29
Find in video from 07:53Alien
Un Exobiologiste analyse les aliens dans les films (Prometheus, La G…
396.7K viewsAug 21, 2024
YouTubeAlloCiné
1:01:51
Exposing Government Secrets! | ALIEN AND UFO ENCOUNTERS: THE TOP 20
393.8K viewsApr 28, 2024
YouTubeFilmIsNow Movies
UFO report: Government transparency or fodder for alien conspiracy theories?
2:05
Find in video from 01:36Other Category Involving Alien Cover
UFO report: Government transparency or fodder for alien c…
15K viewsJun 30, 2021
YouTubeWOOD TV8
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