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Season 21 – Ancient Aliens

Play trailer Poster for Season 21 – Ancient Aliens Feb 2025 Documentary History Play Trailer Watchlist
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Investigators circle the globe in search of evidence in their quest to determine whether life on Earth began in outer space and if aliens influenced mankind in ancient times. Did extraterrestrial beings visit Earth and share information about technology and influence human religions? And more importantly, if aliens visited the planet before, will they return? Alien theorists believe that the answer to both questions is a resounding yes.
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Ancient Aliens — Season 21

Audience Reviews

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rng_jesus Aug 8 genuinely just lies in every second of the show See more Geordie d May 5 Just a rehash of previous series and episodes. Disappointing realy when there's so much of this topic out there and they can't be bothered to make new and interesting episodes. See more Read all reviews
Ancient Aliens — Season 21

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Cast & Crew

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Robert Clotworthy

Narrator

Giorgio Tsoukalos

Actor

Erich von Däniken

Actor

David Childress

Actor

William Henry

Actor

Linda Moulton Howe

Actor

Episodes

Episode 1 Aired Feb 7, 2025 The Top Ten Extraordinary Discoveries Counting down 10 discoveries that challenge traditional beliefs about human history, from a lost city hidden in the Andes to mysterious metal spheres that are not of this world and a sunken city that is said to be the home of the gods. Details Episode 4 Aired Feb 28, 2025 The Glowing Orb Phenomenon Counting down ten unexplainable technologies in history, from mysterious golden orbs discovered in Mexico and a sacred wooden box that could communicate with the heavens to an ancient tomb that is said to depict an astronaut. Details Episode 7 Aired Mar 21, 2025 Mysteries of the Aztecs The Aztecs have built a powerful and feared empire and they have claimed that they were guided by a pantheon of more than a thousand gods who came to Earth from different parts of the universe. Details Episode 8 Aired Mar 28, 2025 The Glowing Orb Phenomenon Across the globe, reports of mysterious glowing orbs are on the rise; their movements frequently defy the laws of physics, and now they are even being reported near military bases, ships, and nuclear weapon facilities. Details Episode 9 Aired Aug 29, 2025 The Legacy of J. Allen Hynek Dr. J. Allen Hynek was a pioneering scientist who developed smart weapons, optical tracking systems and space satellites; yet he is best known as the notorious government UFO debunker who became one of the founding fathers of ufology. Details Episode 10 Aired Sep 5, 2025 The Volcano Factor Volcanoes have inspired countless myths and legends, but curiously, they are also major hotspots for UFO sightings; is it possible that these geological formations, which can generate great energy, are attracting otherworldly visitors? Details Episode 11 Aired Sep 12, 2025 The Birdman Mystery Throughout the ancient world, there are depictions of mysterious figures that appear to be half human and half bird. In many cultures, they are revered as divine and have magical abilities. But could these so-called Birdmen have truly existed? And if so, just what were they? Details Episode 12 Aired Sep 19, 2025 The Abduction Files All over the world, there are people who claim they have been abducted by aliens; since the 1970s, a growing number of researchers have dedicated their lives to uncover what is behind this disturbing phenomenon. Details Episode 13 Aired Oct 2, 2025 The Giants Examining how thousands of years ago, people all over the world described encounters with enormous, human-like beings; exploring how some archaeologists claim to have found skeletons of extraordinary size; is it possible the giants actually existed? Details Episode 14 Aired Oct 9, 2025 Aliens in Our Midst In the age of smartphones and social media, more evidence of otherworldly activity has come to light than ever before. Details Episode 15 Aired Oct 16, 2025 Britain's UFO Files From ancient sites like Stonehenge to the crop circle phenomenon and modern-day UFO sightings, Great Britain is a place of mysteries; exploring if throughout history this island has been a destination for extraterrestrial visitors. Details Episode 16 Aired Oct 23, 2025 Mysteries of the Norse Gods The ancient legends of the Norse read like modern science-fiction, with powerful gods wielding mythic weapons and high technology. Details Episode 17 Aired Nov 6, 2025 Secrets of Japan Japan is a land rich with ancient mysteries and it has also become known as a UFO hotspot. Details
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Ancient Aliens — Season 21

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Season Info

Director
Alex Hicks
Executive Producer
Kevin Burns, David Silver, Kim Sheerin, Max Thompson, Susan Leventhal
Screenwriter
Max Thompson, Gary Simson, Erik Pinkston, Katie Raines, Chris Gattanella
Network
History
Rating
TV-PG
Genre
Documentary, History
Original Language
English
Release Date
Feb 7, 2025