Streaming, rent, or buy Ancient Aliens – Season 21:
We couldn’t find any streaming options in the United Kingdom, but Ancient Aliens - Season 21 is available in the United States and 2 other countries on History, Philo, and 12 other services.
19 Episodes
S21 E1 - The Top Ten Extraordinary Discoveries
S21 E2 - The Top Ten Mysterious Monoliths
S21 E3 - The Top Ten UFO Crashes
S21 E4 - The Top Ten Unexplained Technologies
S21 E5 - The Top Ten Secret Projects
S21 E6 - The Top Ten Mysterious Mountains
S21 E7 - Mysteries of the Aztecs
S21 E8 - The Glowing Orb Phenomenon
S21 E9 - The Legacy of J. Allen Hynek
S21 E10 - The Volcano Factor
S21 E11 - The Birdman Mystery
S21 E12 - The Abduction Files
S21 E13 - The Giants
S21 E14 - Aliens In Our Midst
S21 E15 - Britain's UFO Files
S21 E16 - Mysteries Of The Norse Gods
S21 E17 - Secrets of Japan
S21 E18 - Skulls of the Gods
S21 E19 - Egypt's Lost Pyramid
Watch Now
Season 21 is not available for streaming in the United Kingdom. After checking 1,513 streaming services, we found the title in 3 other countries.
CC
HD
17 Episodes - 42min
Subscription
retail price
Streaming details for Ancient Aliens - Season 21 on History
Runtime
42min
Quality
HD
CC
HD
15 Episodes - 42min
Subscription
$25.00 / month
Streaming details for Ancient Aliens - Season 21 on Philo
Runtime
42min
Quality
HD
Canada 
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Synopsis
"Ancient Aliens" explores the controversial theory that extraterrestrials have visited Earth for millions of years.
Videos: Trailers, Teasers, Featurettes
Cast
Robert Clotworthy
Narrator (voice)
Giorgio A. Tsoukalos
Self
Ariel Bar Tzadok
Self
Jonathan Young
Self
David Childress
Self
Erich von Däniken
Self
Linda Moulton Howe
Self
David Wilcock
Self
George Noory
Self
Philip Coppens
Self
