Ancient Aliens - Season 21
Episodes
The Top Ten Extraordinary Discoveries
Aired: Feb 7, 2025
Ancient Aliens is counting down ten of history's most astonishing discoveries; b...
The Top Ten Mysterious Monoliths
Aired: Feb 14, 2025
Ancient Aliens is counting down the world's top ten most mysterious monoliths. F...
The Top Ten UFO Crashes
Aired: Feb 21, 2025
Ancient Aliens is counting down ten of the most compelling UFO crashes that have...
The Top Ten Unexplained Technologies
Aired: Feb 28, 2025
Ancient Aliens is counting down ten of the most astonishing and unexplainable te...
The Top Ten Secret Projects
Aired: Mar 7, 2025
Ancient Aliens is counting down ten of history's most compelling and covert proj...
The Top Ten Mysterious Mountains
Aired: Mar 14, 2025
Ancient Aliens is counting down ten mysterious mountains that are notorious for ...
Mysteries of the Aztecs
Aired: Mar 21, 2025
The Aztecs built one of the world's most powerful and feared empires and they cl...
The Glowing Orb Phenomenon
Aired: Mar 28, 2025
Across the globe, reports of mysterious glowing orbs are on the rise. Their move...
The Legacy of J. Allen Hynek
Aired: Aug 29, 2025
Dr. J. Allen Hynek is best known as the notorious government UFO debunker who be...
The Volcano Factor
Aired: Sep 5, 2025
Volcanoes have inspired countless myths and legends, but curiously, they are als...
The Birdman Mystery
Aired: Sep 12, 2025
Throughout the ancient world, there are depictions of mysterious figures that ap...
The Abduction Files
Aired: Sep 19, 2025
All over the world, there are people who claim they have been abducted by aliens...