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
Are We Part Alien? | Ancient Aliens
25:21
Are We Part Alien? | Ancient Aliens
69.4K views1 month ago
YouTubeHISTORY
What NASA Knows About Mars | Ancient Aliens
41:19
What NASA Knows About Mars | Ancient Aliens
494.8K views2 months ago
YouTubeHISTORY
The Hybrid Theory: Human or Alien? | Ancient Aliens | History
32:32
The Hybrid Theory: Human or Alien? | Ancient Aliens | History
966K views5 months ago
YouTubeHISTORY
5 Conspiracy Theories in Missing UFO General's Disappearance
31:51
5 Conspiracy Theories in Missing UFO General's Disappearance
345.1K views1 month ago
YouTubeLaw&Crime Network
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…
393.7K views10 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 eviden…
3 weeks ago
MSNIsaac Arthur
40:56
Big Alien Theory
100.8K views2 months ago
YouTubeIsaac Arthur
29:52
Did Aliens Predict Humanity’s End? | Ancient Aliens | History
410.6K views5 months ago
YouTubeHISTORY
37:13
Have Aliens Been Visiting Earth for Millions of Years? | Ancient Alien…
6.9M viewsApr 3, 2025
YouTubeHISTORY
1:30:54
Alien Contact: How Would Humanity React? | FULL DOCUMENTARY
686.7K viewsMar 9, 2025
YouTubeNaked Science
23:35
Space Secrets and NASA’s Role in the Alien Agenda | Ancient Aliens …
272K views8 months ago
YouTubeHISTORY
48:49
Inside the Mystery of the Greys | Ancient Aliens
1.2M views3 months ago
YouTubeHISTORY
24:23
Are the Greys Already Among Us? Alien Hybrids & Robots Revealed …
687K views8 months ago
YouTubeHISTORY
20:27
Humans From the Future | Ancient Aliens | History
1.7M views11 months ago
YouTubeHISTORY
2:06:26
Exposing Alien Secrets: From Roswell to Nan Madol *Marathon* …
455.4K views8 months ago
YouTubeHISTORY
25:54
California’s Cosmic Connection | Ancient Aliens
220.1K views1 month ago
YouTubeHISTORY
50:46
Uncovering Alien Conspiracies | The Proof Is Out There | History
180.4K views11 months ago
YouTubeHISTORY
8:12
Wild Theories of Alien Bases on the Dark Side of the Moon
417.3K views11 months ago
YouTubeJRE Clips
35:13
The Alien Origins of Human Civilization | Ancient Aliens
188.9K views3 months ago
YouTubeHISTORY
8:38
Alien: Earth — Theories That Actually Fit the Timeline
49.1K views8 months ago
YouTubeScreenRant
13:20
10 Alien Species Believed to Be Visiting Earth
114.2K views10 months ago
YouTubeWatchMojo.com
20:09
Cosmic Alien Mysteries | Space's Deepest Secrets | Science Channel
14.2K views6 months ago
YouTubeScience Channel
34:00
Inside Look At Area 51 *New Theories Revealed!* | Ancient Alie…
9.3M viewsApr 22, 2025
YouTubeHISTORY
23:20
Linda Moulton Howe's BIGGEST Theories Revealed | Ancient Alien…
296.6K views1 year ago
YouTubeHISTORY
4:40
Alien DNA Found in Octopus Genetics | Ancient Aliens | History
436K viewsDec 10, 2022
YouTubeHISTORY
2:28
TERMINATOR vs PREDATOR vs A…
Trailer
93.3K viewsMay 13, 2017
YouTubeNew Trailer Buzz
20:43
Top 20 Alien Conspiracy Theories
93.8K viewsNov 14, 2024
YouTubeWatchMojo.com
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