All
AI Mode
Images
Videos
Shorts
Maps
News
Shopping
More
Flights
Notebook
Report an inappropriate content
Please select one of the options below.
Not Relevant
Offensive
Adult
Child Sexual Abuse
Length
All
Short (less than 5 minutes)
Medium (5-20 minutes)
Long (more than 20 minutes)
Date
All
Past 24 hours
Past week
Past month
Past year
Resolution
All
Lower than 360p
360p or higher
480p or higher
720p or higher
1080p or higher
Source
All
Dailymotion
Vimeo
Metacafe
Hulu
VEVO
Myspace
MTV
CBS
Fox
CNN
MSN
Price
All
Free
Paid
Clear filters
SafeSearch:
Moderate
Strict
Moderate (default)
Off
Filter
44:15
Are We Alone? The Search for Alien Life (Full Episode) | UFOs: Investigating the Unknown | Nat Geo
981.1K views
4 weeks ago
YouTube
National Geographic
44:16
People Who Experienced Aliens (Full Episode) | UFOs: Investigating the Unknown | Nat Geo
1.6M views
2 months ago
YouTube
National Geographic
20:49
We’ve Been Searching for Aliens the Wrong Way. That’s All About To Change. . .
807.2K views
5 months ago
YouTube
PBS Space Time
42:14
Are We on the Verge of Finding Alien Life? | Ancient Aliens (S20, E14) | Full Episode
297.8K views
2 months ago
YouTube
HISTORY
2:06:30
Could These Mysteries Point to Alien Contact? *Marathon* | In Search of Aliens
132.4K views
1 month ago
YouTube
HISTORY
24:09
NASA’s Biggest Cover-Up: The Search for Life | Ancient Aliens
127.9K views
3 months ago
YouTube
HISTORY
23:52
Ancient Tech That's OUT OF THIS WORLD | Ancient Aliens
896.4K views
1 month ago
YouTube
HISTORY
27:47
Collective UFO Sighting is Undeniable Proof! | In Search Of
212.5K views
2 weeks ago
YouTube
HISTORY
9:45
Uncovering the Mystery of Nazca | In Search of Aliens (S1)
80.9K views
2 weeks ago
YouTube
HISTORY
8:34
Are Alien Secrets Hidden in Washington D.C.? | In Search of Aliens (S1)
65.3K views
1 month ago
YouTube
HISTORY
22:59
What are UFO hunters really searching for? | The Global Story
59.2K views
6 months ago
YouTube
BBC News
1:04:06
2025’s Biggest Alien Discoveries (Part 2) | Ancient Aliens
1.3M views
11 months ago
YouTube
HISTORY
44:16
Alien Encounters (Full Episode) | UFOs: Investigating the Unknown | National Geographic
668.7K views
1 month ago
YouTube
National Geographic
40:21
The Most Shocking Alien Encounters Ever | Ancient Aliens
1.5M views
5 months ago
YouTube
HISTORY
23:34
Nick Pope’s Global UFO Investigation | Ancient Aliens
742.8K views
5 months ago
YouTube
HISTORY
0:49
Microscope Reveals Alien Life? | Expedition Unknown: Hunt For Extraterrestrials S1 E4
14.6K views
4 months ago
YouTube
DiscoveryChannelInd
1:00:57
Aliens, Yetis, UFOs, and Other Paranormal Phenomena | Expedition Files | Discovery
1M views
10 months ago
YouTube
Discovery
9:30
The Legend of Bigfoot is Born | In Search of Aliens (S1)
62.8K views
1 month ago
YouTube
HISTORY
11:37
The Lost City of Atlantis: Myth or Ancient Reality? | In Search of Aliens (S1)
118.3K views
2 months ago
YouTube
HISTORY
7:51
Could Aliens Look Just Like Humans? (S1) | Ancient Aliens
68.7K views
6 months ago
YouTube
HISTORY
48:49
Inside the Mystery of the Greys | Ancient Aliens
1.6M views
9 months ago
YouTube
HISTORY
18:23
Unexplained Phenomena Across the American West | Ancient Aliens
258.2K views
7 months ago
YouTube
HISTORY
10:45
The Shocking Mystery of Loch Ness | In Search of Aliens (S1)
58.9K views
2 months ago
YouTube
HISTORY
9:36
Did the German Army Invent Time Travel? | In Search of Aliens (S1)
288.9K views
2 months ago
YouTube
HISTORY
3:30:10
Find in video from 41:59
Giant UFO in Texas
UFOS: Investigating the Unknown MEGA EPISODE | Secret Program
…
8.5M views
Oct 5, 2024
YouTube
National Geographic
1:25:26
Searching For Aliens and Our Place in the Universe | How the Universe Works | Science Channel
1.9M views
Jun 9, 2025
YouTube
Science Channel
43:21
Alien Truth-Seekers Unite: Rick, Marty & Travis | Ancient Aliens | History
1.1M views
Sep 2, 2025
YouTube
HISTORY
1:19:08
Encounters that threatened America | UFOs: Top Secret Alien Files | History
1.9M views
Sep 27, 2024
YouTube
HISTORY
18:07
Find in video from 01:48
Searching for Radio Signals
My Search for Proof Aliens Exist | Avi Loeb | TED
1.6M views
Jul 16, 2024
YouTube
TED
12:32
6 Ways Aliens Could Find Us
294.3K views
Sep 11, 2025
YouTube
SciShow
See more
More like this
Feedback