Though claims of extraterrestrial encounters have long been dismissed, many believe the existence of UFOs is not just likely, but a certainty.
Season 1
6 episodes
Robert Polo
Self - Narrator (voice)
Ancient Aliens
2010
Investigation Alien
2024
Encounters
2023
MythBusters
2003
American Experience
1988
Clifford the Big Red Dog
2000
Bubble Guppies
2011
Hangar 1: The UFO Files
2015
American Masters
1986
seaQuest DSV
1993
Heaven's Gate: The Cult of Cults
2020
How It's Made
2001
The Centurions
Sofia the First
2013
Octonauts
Prehistoric Planet
2022
The Backyardigans
2004
History's Greatest Mysteries
Horizon
1964
Kong: King of the Apes
2016
