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
Searching For Aliens and Our Place in the Universe | How the Universe Works | Science Channel
1:25:26
Searching For Aliens and Our Place in the Universe | How the Univers…
1.7M views10 months ago
YouTubeScience Channel
Are There Aliens In Our Galaxy and ON EARTH? | Unveiled XL Documentary
40:28
Are There Aliens In Our Galaxy and ON EARTH? | Unveiled XL Docum…
75.6K viewsAug 7, 2023
YouTubeUnveiled
UFOS & ALIENS - The Myth Of Space Travel | SPACETIME - SCIENCE SHOW
48:51
UFOS & ALIENS - The Myth Of Space Travel | SPACETIME - SCIE…
3.5M viewsNov 29, 2019
YouTubeWELT Documentary
Galactic Federation Explained: Alien Council, UFO Sightings and Abductions
7:46
Galactic Federation Explained: Alien Council, UFO Sightings and Abdu…
2.7K views6 days ago
YouTubeLAB 360
Space's Most Mysterious Worlds: The Unique World of Alien Planets! 🌌 (Full Documentary)
40:34
Space's Most Mysterious Worlds: The Unique World of Alien Planets…
32 views3 days ago
YouTubeScience Documents
There Are Thousands of Alien Empires in The Milky Way
13:59
There Are Thousands of Alien Empires in The Milky Way
8.7M viewsApr 16, 2024
YouTubeKurzgesagt – In a Nutshell
1:16:35
How Close Are We To Finding Alien Life?
554.8K viewsMar 13, 2024
YouTubeWhat If
13:40
Ancient Aliens: Evidence of Life in Outer Space | History
412.1K viewsJul 25, 2024
YouTubeHISTORY
1:19:43
Arizona's Secret UFO Files | ALIENS UNCOVERED: ET OR MAN-MADE …
157K viewsMay 5, 2024
YouTubeFilmIsNow Movies
44:19
Secrets of Distant Galaxies | The Universe (S1, E9) | Full Episode
156K views5 months ago
YouTubeHISTORY
44:40
The Universe: Countless Wonders of the Milky Way (S2, E4) | Full Epi…
4M viewsOct 12, 2020
YouTubeHISTORY
1:30:54
Alien Contact: How Would Humanity React? | FULL DOCUMENTARY
686.7K viewsMar 9, 2025
YouTubeNaked Science
2:16
The Alien Perspective - Official Trailer (2025) Documentary
154.5K viewsDec 20, 2024
YouTubeIGN Movie Trailers
0:23
Zooming Through a Simulated Universe
15K viewsMar 8, 2023
YouTubeNASA Video
48:59
Planets: The Search for a New World | Space Science | Episode 4 | Free …
881.1K viewsNov 19, 2019
YouTubeFree Documentary
5:12
Aliens, Galaxies and Slime, oh my! The VFX of CYSTM!
839.7K viewsOct 28, 2019
YouTubeVsauce3
4:35
Alien civilization: Report suggests there may be 36 intelligent aliens i…
248.5K viewsJun 23, 2020
YouTubeFox Business
1:00:53
This Documentary Proves Alien Implants are REAL! | Scientific Stu…
1.9K views1 week ago
YouTubeSci-Fi Central
5:17
A “Top Secret” Document Claims 4 Alien Species Visited Earth
46 views1 day ago
YouTubeSpace Unfiltered
2:14
Family of Galaxies | How the Universe Works
88.1K viewsMay 15, 2014
YouTubeScience Channel
8:30
The Impossible Task of Contacting Aliens | How the Universe Works
262.9K viewsJun 20, 2020
YouTubeScience Channel
49:54
Space Knowledge: The Sun & Beyond the Solar | Zenith | Free D…
617K viewsJun 10, 2022
YouTubeFree Documentary
6:21
The Fermi Paradox — Where Are All The Aliens? (1/2)
35M viewsMay 6, 2015
YouTubeKurzgesagt – In a Nutshell
12:21
Top 10 Best Alien Documentaries
917.2K viewsJan 1, 2020
YouTubeWatchMojo.com
2:56:33
The Universe: Explore the Alien Worlds of Outer Space *3 Hour Ma…
5.3M viewsOct 15, 2023
YouTubeHISTORY
1:19
'They Also Found a Live Alien' Ep. 4 Official Clip | UFO | SHOWTIME Do…
2.2M viewsSep 2, 2021
YouTubeSHOWTIME
50:16
Departure to Mars - Conquest of a Planet | SPACETIME - SCIENCE S…
1.6M viewsDec 5, 2019
YouTubeWELT Documentary
3:19
Alien world may have been found outside the Milky Way for first time
15.3K viewsOct 26, 2021
YouTubeVideoFromSpace
9:55
Have 36 Alien Civilizations Colonized The Milky Way? | Unveil…
353.3K viewsJun 20, 2020
YouTubeUnveiled
See more videos
Static thumbnail place holder