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The Best Episodes of Ancient Aliens

Every episode of Ancient Aliens ranked from best to worst. Let's dive into the Best Episodes of Ancient Aliens!

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Did intelligent beings from outer space visit Earth thousands of years ago? From the age of the dinosaurs to ancient Egypt, from early cave drawings to continued mass sightings in the US, each episode gives

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Episode Rankings

  1. #1 Fan Favorite
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    Ancient Aliens Season 21 Episode 7 - Mysteries of the Aztecs
    8.8/10(27 votes)

    #1 - Mysteries of the Aztecs

    S21:E7

    The Aztecs built one of the world's most powerful and feared empires and they claimed that they were guided by a pantheon of more than a thousand gods who came to Earth from different parts of the universe. Could the incredible story of their rise to power and their sudden demise, reveal a history of extraterrestrial intervention in Mesoamerica?

    Director:Unknown
    Writer:Unknown

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  2. Ancient Aliens Season 20 Episode 11 - Mysteries of the Maya
    8.5/10(44 votes)

    #2 - Mysteries of the Maya

    S20:E11

    Considered by many to be the greatest civilization in the history of the Americas, the Maya thrived for more than 2,000 years. Now, new evidence is being discovered that completely upends our understanding of this ancient culture... and might provide evidence that the Maya came in contact with extraterrestrial visitors.

    Director:Unknown
    Writer:Unknown

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  3. Ancient Aliens Season 20 Episode 20 - Resurrecting Puma Punku
    8.5/10(38 votes)

    #3 - Resurrecting Puma Punku

    S20:E20

    Puma Punku in Bolivia features stone blocks, each carved with precision; the blocks lie scattered across the landscape, confusing archaeologists as to what the ancient site might have been.

    Director:Unknown
    Writer:Unknown

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  4. Ancient Aliens Season 21 Episode 10 - The Volcano Factor
    8.4/10(31 votes)

    #4 - The Volcano Factor

    S21:E10

    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?

    Director:Unknown
    Writer:Unknown

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  5. Ancient Aliens Season 21 Episode 12 - The Abduction Files
    8.3/10(27 votes)

    #5 - The Abduction Files

    S21:E12

    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.

    Director:Unknown
    Writer:Unknown

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  6. Ancient Aliens Season 21 Episode 15 - Britain's UFO Files
    8.3/10(21 votes)

    #6 - Britain's UFO Files

    S21:E15

    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.

    Director:Unknown
    Writer:Unknown

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    7. Trending NowTRENDING NOW

    The 20 WORST Episodes of Ancient Aliens

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  7. Ancient Aliens Season 21 Episode 16 - Mysteries Of The Norse Gods
    8.3/10(18 votes)

    #7 - Mysteries Of The Norse Gods

    S21:E16

    The ancient legends of the Norse read like modern science-fiction, with powerful gods wielding incredible weapons and high technology. Could it be that these mythological tales are based on real encounters with extraterrestrial beings?

    Director:Unknown
    Writer:Unknown

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  8. Ancient Aliens Season 19 Episode 15 - Edgar Cayce: The Sleeping Prophet
    8.2/10(59 votes)

    #8 - Edgar Cayce: The Sleeping Prophet

    S19:E15

    In the early 1900s, a modern-day prophet from the hills of Kentucky became a worldwide sensation: Edgar Cayce. He claimed to receive visions of both the past and the future while in a trance, he healed the sick, and alleged to have encounters with otherworldly beings. Could it be that Edgar Cayce was a vessel used to carry out an alien agenda?

    Director:Unknown
    Writer:Unknown

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  9. Ancient Aliens Season 20 Episode 17 - Egypt's Giant Tombs
    8.2/10(37 votes)

    #9 - Egypt's Giant Tombs

    S20:E17

    Deep beneath the sands of Egypt lie 24 enormous sarcophagi, and every one of them is empty; discussing what purpose those giant tombs had served.

    Director:Unknown
    Writer:Unknown

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  10. Ancient Aliens Season 20 Episode 18 - The Linda Moulton Howe Files
    8.2/10(43 votes)

    #10 - The Linda Moulton Howe Files

    S20:E18

    For more than four decades, award-winning journalist Linda Moulton Howe has covered the most mysterious phenomena on Earth. Could her investigations on everything from bizarre animal deaths to crop formations and alien abductions lead us to a profound new reality?

    Director:Unknown
    Writer:Unknown

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  11. Ancient Aliens Season 21 Episode 4 - The Top Ten Unexplained Technologies
    8.2/10(27 votes)

    #11 - The Top Ten Unexplained Technologies

    S21:E4

    Ancient Aliens is counting down ten of the most astonishing and unexplainable technologies in history. From mysterious golden orbs discovered in Mexico, to a sacred wooden box that could communicate with the heavens and an ancient tomb that is said to depict an astronaut. Might these sensational artifacts be evidence of otherworldly contact?

    Director:Unknown
    Writer:Unknown

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  12. Ancient Aliens Season 21 Episode 8 - The Glowing Orb Phenomenon
    8.2/10(25 votes)

    #12 - The Glowing Orb Phenomenon

    S21:E8

    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. Do they represent a non-human intelligence and if so, why are they here?

    Director:Unknown
    Writer:Unknown

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  13. Ancient Aliens Season 19 Episode 3 - Mystery of the Lost Civilization
    8.1/10(76 votes)

    #13 - Mystery of the Lost Civilization

    S19:E3

    The discovery of the ancient megalithic site of Karahan Tepe in southern Turkey turned the world of archaeology on its head, displaying engineering skills far beyond what the people of the time were thought to be capable of. But could new evidence reveal that this more than 11,000-year-old complex was built not by humans…but giants?

    Director:Unknown
    Writer:Unknown

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  14. Ancient Aliens Season 21 Episode 13 - The Giants
    8.1/10(23 votes)

    #14 - The Giants

    S21:E13

    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?

    Director:Unknown
    Writer:Unknown

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  15. Ancient Aliens Season 12 Episode 4 - The Alien Architects
    8.0/10(118 votes)

    #15 - The Alien Architects

    S12:E4

    Many of the architectural marvels of the ancient world bear striking similarities to one another, even though they were built by civilizations that were separated by thousands of miles and are believed to have had no contact with one another. Separated by more than 7500 miles, the Giza pyramid complex in Giza, Egypt and the Avenue of the Dead in Teotihuacan, Mexico contain pyramids that are aligned with the constellation of Orion's belt. An ancient pyramid temple in Cambodia known as Baksei Chamkrong is an almost identical match for the Temple of the Jaguar in Guatemala. Many structures built using stone slabs that weighed over a hundred tons. But how did primitive people achieve such extraordinary feats? And why do we see such similarities? Could these sites have all been designed by alien architects?

    Director:Unknown
    Writer:Unknown

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  16. Ancient Aliens Season 16 Episode 6 - William Shatner Meets Ancient Aliens
    8.0/10(125 votes)

    #16 - William Shatner Meets Ancient Aliens

    S16:E6

    In this extraordinary two-hour special, Shatner will bring thought-provoking questions to the leading experts of the show. Ancient Astronaut theorists Giorgio Tsoukalos, Erich von D niken, David Childress, William Henry and Linda Moulton Howe will be joined by former British Ministry of Defense investigator Nick Pope, rocket scientist Dr. Travis Taylor, theoretical physicist Dr. Michio Kaku, and religious history experts Rabbi Ariel Bar Tzadok and Reverend Michael Carter. They will explore everything from human origins to groundbreaking archaeological finds, new understandings of the cosmos and the profound possibility that we are not alone in the universe.

    Director:Unknown
    Writer:Unknown

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  17. Ancient Aliens Season 16 Episode 7 - Impossible Artifacts
    8.0/10(97 votes)

    #17 - Impossible Artifacts

    S16:E7

    Throughout the world, ancient objects have been found that leave archaeologists at a loss. Could these impossible artifacts suggest that advanced--and perhaps even extraterrestrial--civilizations existed on Earth thousands of years before our own?

    Director:Unknown
    Writer:Unknown

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  18. Ancient Aliens Season 18 Episode 20 - Return of the Egyptian Gods
    8.0/10(70 votes)

    #18 - Return of the Egyptian Gods

    S18:E20

    In the 20th century, a mysterious British woman who claimed to be the reincarnation of an ancient Egyptian priestess shocked Egyptologists by accurately locating countless structures and artifacts in the Nile Valley. Could it be that she was carrying out an otherworldly agenda–and preparing for the return of the Egyptian gods?

    Director:Unknown
    Writer:Unknown

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  19. Ancient Aliens Season 19 Episode 9 - Aliens in our Airspace
    8.0/10(64 votes)

    #19 - Aliens in our Airspace

    S19:E9

    Terrifying encounters at 40,000 feet. Pilot accounts of UFOs taking control of their aircraft. Entire jumbo jets disappearing into thin air. Since the dawn of aviation, pilots have experienced unexplainable events in the sky. Could they have witnessed aliens in our airspace?

    Director:Unknown
    Writer:Unknown

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  20. Ancient Aliens Season 20 Episode 7 - Secrets Of The Sumerians
    8.0/10(58 votes)

    #20 - Secrets Of The Sumerians

    S20:E7

    More than 7,000 years ago, the ancient Sumerians established what is considered the world's first civilization and they credited their extraordinary achievements to their gods, the Anunnaki. But is it possible that these powerful beings were, in fact, extraterrestrial visitors to Earth?

    Director:Unknown
    Writer:Unknown

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  21. Ancient Aliens Season 20 Episode 12 - Unlocking the Stargates
    8.0/10(45 votes)

    #21 - Unlocking the Stargates

    S20:E12

    For thousands of years, cultures around the world have held a belief in stargates through which beings have traveled to Earth from distant points in the universe and even other dimensions. Could such portals truly exist? And if we obtain the key to unlocking the stargates, will we find a cosmos teaming with life?

    Director:Unknown
    Writer:Unknown

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  22. Ancient Aliens Season 20 Episode 14 - The Search For Extraterrestrial Intelligence
    8.0/10(39 votes)

    #22 - The Search For Extraterrestrial Intelligence

    S20:E14

    For thousands of years, humankind has attempted to make contact with beings from beyond Earth; now, the search for extraterrestrial intelligence is ramping up, with new technologies allowing individuals to explore the universe.

    Director:Unknown
    Writer:Unknown

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  23. Ancient Aliens Season 20 Episode 15 - Jacques Vallée: UFO Pioneer
    8.0/10(45 votes)

    #23 - Jacques Vallée: UFO Pioneer

    S20:E15

    Dr. Jacques Vallée has many scientific degrees, is a best-selling author and is regarded as one of the internet's founding fathers. But he is best renowned for his groundbreaking work on the subject of UFOs, where his bold theories call into question our understanding of alien life.

    Director:Unknown
    Writer:Unknown

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  24. Ancient Aliens Season 21 Episode 9 - The Legacy of J. Allen Hynek
    8.0/10(31 votes)

    #24 - The Legacy of J. Allen Hynek

    S21:E9

    Dr. J. Allen Hynek is best known as the notorious government UFO debunker who became one of the founding fathers of ufology. Was Dr. Hynek right when he ultimately concluded that there is a non-human intelligence on Earth?

    Director:Unknown
    Writer:Unknown

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  25. Ancient Aliens Season 21 Episode 11 - The Birdman Mystery
    8.0/10(29 votes)

    #25 - The Birdman Mystery

    S21:E11

    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?

    Director:Unknown
    Writer:Unknown

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Best Episodes Summary

"Mysteries of the Aztecs" is the best rated episode of "Ancient Aliens". It scored 8.8/10 based on 27 votes. Directed by Unknown and written by Unknown, it aired on 3/21/2025. This episode scored 0.3 points higher than the second highest rated, "Mysteries of the Maya".