Revisit the most compelling mysteries explored over the past 15 years of "Ancient Aliens." Experts like Giorgio Tsoukalos, David Childress, William Henry, and Jason Martell engage in conversations around Ancient Astronaut Theory in each episode.
The Proof Is Out There: Alien Edition
Alien Encounters
Truth Hunter
Alien Files: Reopened
3rd Rock from the Sun
Gabby Duran and the Unsittables
Ultraman Ace
Ultraman Nexus
takt op.Destiny
Ultraman Trigger: New Generation Tiga
Taken
Buck Rogers in the 25th Century
Ultraman
Ultraman Dyna
Alien Nation
Animorphs
Childhood's End
ALF
Ultraman Leo
Return of Ultraman