Including results for alien theory 2021.
Do you want results only for Alien Theory2021?
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 | Maratho…
489.8K views11 months ago
YouTubeHISTORY
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 popula…
2.9M viewsSep 29, 2023
YouTubeBig Think
Big Alien Theory
40:56
Big Alien Theory
89.8K views2 months ago
YouTubeIsaac Arthur
The Hybrid Theory: Human or Alien? | Ancient Aliens | History
32:32
The Hybrid Theory: Human or Alien? | Ancient Aliens | History
966.4K views6 months ago
YouTubeHISTORY
Inside Look At Area 51 *New Theories Revealed!* | Ancient Aliens | History
34:00
Inside Look At Area 51 *New Theories Revealed!* | Ancient Alie…
9.9M viewsApr 22, 2025
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 eviden…
1 month ago
MSNIsaac Arthur
Humans From the Future | Ancient Aliens | History
20:27
Humans From the Future | Ancient Aliens | History
1.7M viewsMay 8, 2025
YouTubeHISTORY
42:15
The Global Threat (Full Episode) | UFOs: Investigating the Unknown
6.8M viewsFeb 24, 2024
YouTubeNational Geographic
33:04
Outer Space’s Most Baffling Mysteries | Ancient Aliens | History
811.3K viewsMar 4, 2025
YouTubeHISTORY
1:18:48
PROOF* THAT ALIENS ARE REAL!!! (*my theory) with Neil deGrasse T…
381K views2 months ago
YouTubeHasan Minhaj
1:18:32
The NEW Complete Alien Timeline (1979 - 2025)
128.6K views5 months ago
YouTubeNerdist
23:20
Linda Moulton Howe's BIGGEST Theories Revealed | Ancient Alien…
322.6K viewsMay 1, 2025
YouTubeHISTORY
3:29
Mystery Object Moving Unusually Towards Earth! | Comet or An Alie…
176.6K views9 months ago
YouTubeWION
30:49
Alien Theory: Comet 3I/ATLAS Enters Solar System With Unusua…
9.1K views6 months ago
YouTubeCNN-News18
59:11
Ancient Aliens: TOP UFO MYSTERIES OF 2025 | Part 1
392.8K views5 months ago
YouTubeHISTORY
2:05:33
Uncovering the Truth: Giants, Alien Relics & The Human Experiment *…
468.1K views8 months ago
YouTubeHISTORY
13:20
10 Alien Species Believed to Be Visiting Earth
118.7K views10 months ago
YouTubeWatchMojo.com
2:16
The Alien Perspective - Official Trailer
90.5K viewsJan 2, 2025
YouTubeIGN
1:04:21
Top 40 Horror Movie Theories That Turned Out to Be True and 10 Tha…
194.3K views7 months ago
YouTubeWatchMojo.com
1:06:43
Alien Origins | Aliens On Earth: The True Story Of Human's Origin | Ful…
4.2K views7 months ago
YouTubeV Movies
2:16
Find in video from 01:35The Future of Aliens
Watch The Official Trailer For UFO Documentary The Alien Perspective
2.5K viewsDec 19, 2024
YouTubeScreen Rant Plus
1:47
Investigation Alien | Official Trailer | Netflix
1.7M viewsOct 11, 2024
YouTubeNetflix
1:18:30
Brian Cox: Why black holes could hold the secret to time and space …
4.1M views10 months ago
YouTubeBig Think
2:02
Alien: Romulus | Official Trailer
13.3M viewsJun 4, 2024
YouTube20th Century Studios
7:43
Lizard People Conspiracy Theory Explained
2.8M viewsDec 6, 2019
YouTubeBuzzFeed Unsolved Network
1:03
Alien: Romulus | Teaser Trailer
22.2M viewsMar 20, 2024
YouTube20th Century Studios
1:02:43
The Best NEW Science-Fiction Movies (Trailers)
1.9M viewsAug 13, 2021
YouTubeKinoCheck.com
15:29
Find in video from 07:53Alien
Un Exobiologiste analyse les aliens dans les films (Prometheus, La Gu…
385.1K viewsAug 21, 2024
YouTubeAlloCiné
10:00
Aliens are already on Earth, new Harvard study speculates | LiveN…
495.4K viewsJun 14, 2024
YouTubeLiveNOW from FOX
0:44
8:45 p.m. - Saturday, October 4 - Alien Theory: The Mystery of the S…
19.9K viewsOct 2, 2014
YouTubeRMC DECOUVERTE
See more videos
Static thumbnail place holder