Top 20 Alien Documentaries You HAVE to See
24:58
YouTubeWatchMojo.com
Top 20 Alien Documentaries You HAVE to See
Dive into the mysterious world of UFOs and extraterrestrial encounters! We're counting down the most fascinating, mind-bending, and thought-provoking alien documentaries that explore the possibility of life beyond our planet. From government conspiracies to incredible eyewitness accounts, these films will make you question everything you ...
65.7K viewsMar 11, 2025
Extraterrestrial Life Forms
Exploring the Unknown | Alien Life Forms | Full Sci-Fi Documentary | Free Movie
1:10:11
Exploring the Unknown | Alien Life Forms | Full Sci-Fi Documentary | Free Movie
YouTubeV Movies
3K views8 months ago
Cosmic Megafauna - Could Giant Alien Life Forms Exist?
41:04
Cosmic Megafauna - Could Giant Alien Life Forms Exist?
YouTubeIsaac Arthur
323.8K views9 months ago
The Different Types Of Alien You Should Know About | Unveiled
8:03
The Different Types Of Alien You Should Know About | Unveiled
YouTubeUnveiled
1M viewsOct 28, 2022
Top videos
Unsolved Alien Mysteries: from Alaska's Pyramid to the Freemasons | Ancient Aliens
1:09:50
Unsolved Alien Mysteries: from Alaska's Pyramid to the Freemasons | Ancient Aliens
YouTubeHISTORY
3M views7 months ago
Encounters that threatened America | UFOs: Top Secret Alien Files | History
1:19:08
Encounters that threatened America | UFOs: Top Secret Alien Files | History
YouTubeHISTORY
1.4M viewsSep 27, 2024
The Global Threat (Full Episode) | UFOs: Investigating the Unknown
42:15
The Global Threat (Full Episode) | UFOs: Investigating the Unknown
YouTubeNational Geographic
6.7M viewsFeb 24, 2024
Roswell Incident Documentary
Roswell's First Witness Testimonial | History's Greatest Mysteries (S1, E5) | Full Episode
1:22:53
Roswell's First Witness Testimonial | History's Greatest Mysteries (S1, E5) | Full Episode
YouTubeHISTORY
1.5M views11 months ago
History's Greatest Mysteries: Military Cleanup at Roswell Crash?! (S1, E6) | Full Episode
1:22:05
History's Greatest Mysteries: Military Cleanup at Roswell Crash?! (S1, E6) | Full Episode
YouTubeHISTORY
859.1K views11 months ago
Alien Encounters: Roswell | Roswell Crash Anniversary
1:02
Alien Encounters: Roswell | Roswell Crash Anniversary
YouTubeFilmRise Television
3.7K views9 months ago
Unsolved Alien Mysteries: from Alaska's Pyramid to the Freemasons | Ancient Aliens
1:09:50
Unsolved Alien Mysteries: from Alaska's Pyramid to the Freemasons | Ancient Aliens
3M views7 months ago
YouTubeHISTORY
Encounters that threatened America | UFOs: Top Secret Alien Files | History
1:19:08
Encounters that threatened America | UFOs: Top Secret Alien Files | History
1.4M viewsSep 27, 2024
YouTubeHISTORY
The Global Threat (Full Episode) | UFOs: Investigating the Unknown
42:15
The Global Threat (Full Episode) | UFOs: Investigating the Unknown
6.7M viewsFeb 24, 2024
YouTubeNational Geographic
SHOCKING UFO MYSTERIES OF 2025 | Ancient Aliens *Full Episode Marathon*
2:05:52
SHOCKING UFO MYSTERIES OF 2025 | Ancient Aliens *Full Episode Marathon*
731.4K views4 months ago
YouTubeHISTORY
Nordics & The Cube: UFO True Story | UFO Witness S2 Ep8 | Discovery Channel
42:35
Nordics & The Cube: UFO True Story | UFO Witness S2 Ep8 | Discovery Channel
105.7K views10 months ago
YouTubeDiscoveryChannelInd
Ancient Aliens: Extraterrestrial Legends & UFO Mysteries Revealed *3 Hour Marathon* | History
2:56:09
Ancient Aliens: Extraterrestrial Legends & UFO Mysteries Revealed *3 Hour Marathon* | History
2.6M viewsSep 17, 2024
YouTubeHISTORY
Uncovering Earth’s Most Sacred UFO Mysteries *Marathon* | Ancient Aliens
2:06:08
Uncovering Earth’s Most Sacred UFO Mysteries *Marathon* | Ancient Aliens
154.8K views4 months ago
YouTubeHISTORY
Unearthly Encounters | ALIEN ABDUCTION: THE STRANGEST UFO CASE FILES | Beyond Belief
1:17:27
Find in video from 01:20The Alien Abduction
Unearthly Encounters | ALIEN ABDUCTION: THE STRANGEST U…
1.2M viewsMay 26, 2024
YouTubeFilmIsNow Movies
42:12
The Extraterrestrial Secret Unveiled! | UFO Witness S2 E2 | Full Episode | Discovery Channel
97.2K views10 months ago
YouTubeDiscoveryChannelInd
1:01:51
Exposing Government Secrets! | ALIEN AND UFO ENCOUNTERS: THE TOP 20
393.8K viewsApr 28, 2024
YouTubeFilmIsNow Movies
UFO's: Investigating the Unknown MEGA EPISODE | Secret Programs and Close Encounters | Nat Geo
3:30:10
Find in video from 41:59Giant UFO in Texas
UFO's: Investigating the Unknown MEGA EPISODE | Secret Program…
7.3M viewsOct 5, 2024
YouTubeNational Geographic
59:11
Ancient Aliens: TOP UFO MYSTERIES OF 2025 | Part 1
376.8K views4 months ago
YouTubeHISTORY
42:17
Are Aliens Guiding Cosmic Impacts? (S19, E6) | Ancient Aliens | Full Episode
187.1K views1 month ago
YouTubeHISTORY
18:43
UFOs, Government Secrets & Hidden Knowledge | Ancient Aliens
245.9K views4 months ago
YouTubeHISTORY
42:17
Extraterrestrial Moon Bases: Strange Evidence Explained | Ancient Aliens (S1, E11) | Full Episode
3.6M views8 months ago
YouTubeHISTORY
48:49
Inside the Mystery of the Greys | Ancient Aliens
1.1M views2 months ago
YouTubeHISTORY
25:31
UFOs at Nuclear Sites? | Ancient Aliens
184.9K views1 month ago
YouTubeHISTORY
1:04:06
2025’s Biggest Alien Discoveries (Part 2) | Ancient Aliens
1M views4 months ago
YouTubeHISTORY
23:17
Humanity’s Greatest Unexplained Mysteries | Ancient Aliens
326.5K views2 months ago
YouTubeHISTORY
42:22
Ancient Aliens: Civilization Buried Under Antarctica's Ice?! (S14, E1) | Full Episode | History
2.3M viewsAug 8, 2024
YouTubeHISTORY
35:48
WILD UFO CRASHES | Ancient Aliens | History
427.6K viewsMar 18, 2025
YouTubeHISTORY
35:57
Craziest Alien UFO Crashes | Ancient Aliens | History
394.4K views10 months ago
YouTubeHISTORY
1:18:32
The NEW Complete Alien Timeline (1979 - 2025)
110.1K views4 months ago
YouTubeNerdist
Government Breaks Silence: Strange Encounters | UFO's Investigating the Unknown
42:14
Find in video from 02:26Government's UFO Files
Government Breaks Silence: Strange Encounters | UFO's Inves…
7M viewsApr 26, 2024
YouTubeNational Geographic
39:44
Unexplained Anomalies and Their Extraterrestrial Links | Ancient Aliens
634.4K views5 months ago
YouTubeHISTORY
1:31:03
Evidence of Early Alien Contact with Earth | Ancient Aliens (S1, E99) | Full Episode | History
3.2M viewsNov 16, 2024
YouTubeHISTORY
24:46
Mysterious Abductions: Encounters Beyond Explanation | Ancient Aliens
245.1K views1 month ago
YouTubeHISTORY
6:44
Government officials discuss UAPs, alien life in new documentary
355.9K views4 months ago
YouTubeCBS News
1:30:54
Alien Contact: How Would Humanity React? | FULL DOCUMENTARY
672.7K viewsMar 9, 2025
YouTubeNaked Science
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