Ancient Aliens

1. S01E01Season's bestThe EvidenceApril 20, 2010 8.0If ancient aliens visited Earth, what was their legacy, and did they leave behind clues that exist in plain sight such as sophisticated airc
2. S01E02The VisitorsApril 27, 2010 8.0If ancient aliens visited Earth, who were they, and where did they come from? Possible historic evidence and beliefs are examined around the
3. S01E03The MissionMay 4, 2010 8.0If ancient aliens visited Earth, what was their mission, and is there evidence that points to when they will return? Ancient Sumerian tablet
4. S01E04Closer EncountersMay 18, 2010 8.0Reports of encounters with strange beings and sightings of mysterious objects in the sky have occurred throughout history. A 13th century hi
5. S01E05The ReturnMay 25, 2010 8.0There is evidence that suggests we experienced 20th century alien contact. In 1942, the Battle of Los Angeles involved the US military and A

Season 1 ranked & reviewed

1. S02E01Mysterious PlacesOctober 28, 2010 8.5Mysterious places can be found around the Earth, and, inexplicably, UFOs are often sited near these mystical areas. Planes and ships unaccou
2. S02E02Gods & AliensNovember 4, 2010 8.5Myths and legends have long been regarded as fantastic stories that describe powerful gods, mutant giants and fearsome monsters. But why do
3. S02E03Underwater WorldsNovember 11, 2010 8.0Ancient underwater cities can be found around the globe, but could these aquatic worlds be the ruins of unknown civilizations--or even proof
4. S02E04Underground AliensNovember 18, 2010 8.3If extraterrestrials influenced human history, can evidence of their existence be found in hidden tunnels and caverns around the world? Coul
5. S02E05Season's bestAliens and the Third ReichNovember 25, 2010 9.0If ancient aliens visited Earth in the remote past, could they have given us advanced technology, past down through human history? And could
6. S02E06Alien TechDecember 2, 2010 8.0Super-heated death rays... High-tech rockets... Powerful sonic weapons... Are these examples of modern day science or could these technologi
7. S02E07Angels and AliensDecember 9, 2010 8.3Biblical texts and ancient lore frequently describe winged creatures carrying messages from the heavens. But are angels merely the product o
8. S02E08Unexplained StructuresDecember 16, 2010 8.0If ancient aliens visited Earth, can evidence of their existence be found in the mysterious structures that still stand throughout the world
9. S02E09Alien DevastationsDecember 23, 2010 8.0If ancient aliens visited Earth, were they responsible for catastrophes, wars and other deadly disasters to control the fate of the human ra
10. S02E10Alien ContactsDecember 30, 2010 8.3Unearthly visitations... Heavenly messengers... Close encounters... Accounts of humans interacting with celestial beings have existed since

Season 2 ranked & reviewed

1. S03E01Aliens and the Old WestJuly 28, 2011 7.8Ancient Astronaut theorists believe aliens have been visiting earth for thousands of years. If so, might we find evidence of this even in th
2. S03E02Aliens and MonstersAugust 4, 2011 8.0Hindu scripture describes an enormous flying creature called a Garuda that shook the ground when it landed on Earth. Is it possible that thi
3. S03E03Aliens and Sacred PlacesAugust 11, 2011 8.0Are sacred places the product of man's reverence for God--or the result of contact with ancient space travelers? Jerusalem's Temple Mount ha
4. S03E04Season's bestAliens and Temples of GoldAugust 18, 2011 8.5Could gold be the ultimate link between humans and aliens? A church in southern France is said to hold the key to alchemy--and a gateway to
5. S03E05Aliens and Mysterious RitualsAugust 25, 2011 7.2Throughout the world, ancient rites and rituals are believed to connect humans to another dimension. But just who--or what--are we communica
6. S03E06Aliens and Ancient EngineersSeptember 1, 2011 7.2Might the tools and technology of ancient builders have come from distant galaxies? Evidence suggests that an ancient mountaintop fortress i
7. S03E07Aliens, Plagues and EpidemicsSeptember 8, 2011 8.0Scientists are continually challenged by unidentified strains of bacteria with mysterious origins. Could some of our most crippling plagues
8. S03E08Aliens and Lost WorldsSeptember 15, 2011 8.3Mysterious legends and crumbling ruins are all that is left of our planet's lost worlds. But could there be proof of ancient alien visitors
9. S03E09Aliens and Deadly WeaponsSeptember 22, 2011 8.0Iron swords forged in blazing hot fires... Gunpowder with the power to tear apart human flesh... And rockets capable of destroying entire ci
10. S03E10Aliens and Evil PlacesSeptember 28, 2011 8.0For thousands of years, there have been places around the world considered dangerous to humans. Might these locations hold the key to an oth
11. S03E11Aliens and the Founding FathersOctober 5, 2011 7.5What is the meaning behind secret messages found throughout Washington, D.C.? Did America's Founding Fathers know something about ancient al
12. S03E12Aliens and Deadly CultsOctober 12, 2011 8.0Mass suicides. Human sacrifices. Unholy rituals. Throughout history, people have claimed to have otherworldly knowledge, and have led follow
13. S03E13Aliens and the Secret CodeOctober 19, 2011 8.3Megalithic monuments linked together by electromagnetic energy... Prehistoric ruins arranged across vast distances in straight lines... And
14. S03E14Aliens and the UndeadOctober 26, 2011 8.0Zombies rising from their graves... Blood sucking vampires damned for all eternity... and humans trapped in a life and death struggle betwee
15. S03E15Aliens, Gods and HeroesNovember 16, 2011 8.0Superhuman strength... Supernatural powers... And the awesome ability to fly. Throughout history, mankind has told incredible tales of gods
16. S03E16Aliens and the Creation of ManNovember 23, 2011 7.6Why are humans so different from every other species on Earth? Did we evolve from ape--or is our intelligence the result of contact with an

Season 3 ranked & reviewed

1. S04E01The Mayan ConspiracyFebruary 17, 2012 7.8The Mayan civilization dominated Central America for nearly 2000 years, but by the 9th century A.D., the great Mayan cities were abandoned,
2. S04E02The Doomsday PropheciesFebruary 17, 2012 8.0The Maya created the most sophisticated calendar systems in the ancient world, and according to many scholars their Long Count Calendar will
3. S04E03The GreysFebruary 24, 2012 8.0Who are the beings with big heads and giant eyes that seem to have been visiting our planet for millennia? Known by researchers as the "grey
4. S04E04Aliens and Mega-DisastersMarch 2, 2012 8.0There are numerous historical, religious and mythic accounts of ancient civilizations being wiped out by volcanoes, earthquakes, floods, and
5. S04E05The NASA ConnectionMarch 9, 2012 8.0NASA scientists, former astronauts and secret government files all point to the conclusion that there has been contact with extraterrestrial
6. S04E06The Mystery of Puma PunkuMarch 16, 2012 8.3At nearly 14,000 years old, the ruins of Puma Punku are the oldest and most baffling on the face of the Earth. No one knows who designed and
7. S04E07Aliens and BigfootMarch 23, 2012 8.0People on every continent have claimed to see the footprints of Bigfoot. And ancient myths and legends speak of an ape-like giant stalking t
8. S04E08Season's bestThe Da Vinci ConspiracyApril 6, 2012 8.5Might an examination of Leonardo Da Vinci's masterful paintings, highly technical hand-drawn sketches, and private journals reveal knowledge
9. S04E09The Time TravelersApril 27, 2012 8.0Is it possible that sightings of alien beings or UFOs may actually be evidence of time travelers from the future? And might ancient astronau
10. S04E10Aliens and DinosaursMay 4, 2012 8.0Angkor Wat, Cambodia, is the world's largest ancient religious temple. Within its megalithic ruins, researches have discovered a depiction o

Season 4 ranked & reviewed

1. S05E01Season's bestSecrets of the PyramidsDecember 21, 2012 8.5For thousands of years, pyramids were the largest structures on Earth. The best known were constructed in Egypt and Central America, but oth
2. S05E02Aliens and Cover-UpsDecember 28, 2012 8.0In 1980, three young military men were sent into a UK forest to investigate strange lights. They reportedly encountered a spacecraft of unkn
3. S05E03Alien Power PlantsJanuary 4, 2013 8.0Egyptian hieroglyphs depict the use of light bulbs in tombs and secret chambers. And batteries may have been discovered among artifacts from
4. S05E04Destination OrionJanuary 11, 2013 7.8Why were ancient civilizations around the world so focused on the Orion constellation? While scientists site many earthly connections, resea
5. S05E05The Einstein FactorJanuary 18, 2013 8.3Was Albert Einstein a genius? Or was he superhuman? Was his genius "of this world," or was it "otherworldly?" Is it possible, as Ancient Ast
6. S05E06Secrets of the TombsJanuary 25, 2013 8.0Across the globe, archaeologists have uncovered ancient tombs filled with strange items and writings. Remarkable similarities have been foun
7. S05E07Prophets and PropheciesFebruary 8, 2013 8.3They were the messengers of divine knowledge and seers who shared visions of the future. For thousands of years, human civilization has been
8. S05E08Beyond NazcaFebruary 15, 2013 8.0Erich von Daniken's landmark book, Chariots of the Gods, brought attention to the mysterious phenomena of the Nazca Lines. Hundreds of gigan
9. S05E09Strange AbductionsFebruary 22, 2013 8.0In 1975, Travis Walton claims to have been abducted and taken aboard a space ship inhabited by extraterrestrial beings. Several people witne
10. S05E10The von Däniken LegacyApril 5, 2013 8.5A young man's spiritual journey. A controversial bestseller. And a scientific theory that threatened to change the world. Just what are the
11. S05E11The Viking GodsApril 12, 2013 8.0They were teachers and destroyers. Mighty warriors who blazed across the skies in gleaming chariots and wielded magical weapons that could b
12. S05E12The MonolithsApril 19, 2013 8.3Massive stone structures that reach to the heavens... strange, giant figures buried deep in the Earth... and energy emitting spheres connect

Season 5 ranked & reviewed

1. S06E01The Power of ThreeSeptember 30, 2013 8.5Reverence for the number three dates back thousands of years, and can still be found today in art, architecture, science, literature, and re
2. S06E02The Crystal SkullsOctober 7, 2013 8.0Luminous relics in the shape of human skulls. Otherworldly artifacts believed to harness the secrets of the universe. Are the Crystal Skulls
3. S06E03The Anunnaki ConnectionOctober 14, 2013 8.0The Sumerians in ancient Mesopotamia achieved over one hundred "firsts" for human civilization. Advances in writing, agriculture, science, m
4. S06E04Magic of the GodsOctober 21, 2013 8.5Wondrous wizards... Mysterious sorcerers... And heavenly beings... possessed of unimaginable power. Throughout the ancient world, magic was
5. S06E05The Satan ConspiracyOctober 28, 2013 8.0He is the evil one, the Prince of Darkness, the ruler of Hell. Satan conjures up horrifying images of a horned beast whose sole purpose is t
6. S06E06Alien OperationsNovember 1, 2013 7.8Mysterious surgeries performed by early humans... Strange beings with miraculous powers... And a cover up--destroying centuries of scientifi
7. S06E07Emperors, Kings and PharaohsNovember 8, 2013 8.3Powerful monarchs ruling by divine right. Centuries-old dynasties amassing enormous wealth. And legendary leaders wielding powerful weapons
8. S06E08Mysterious RelicsNovember 15, 2013 8.0Sacred bones... Golden hats... And fragments of sacred objects thought to possess healing properties. All around the world, archaeologists h
9. S06E09Aliens and Forbidden IslandsNovember 29, 2013 8.0Legends of lost and mysterious islands, advanced civilizations and Eden-like paradises have been told by sailors throughout human history. I
10. S06E10Season's bestAliens and the Lost ArkDecember 6, 2013 8.8The Ark of the Covenant is one of the most sought after religious relics of all times and far more than just a box that contained the Ten Co
11. S06E11Aliens and Mysterious MountainsDecember 13, 2013 8.3Across ancient civilizations, the world's mountains were viewed as the sacred home to all-powerful gods. Why would so many different culture

Season 6 ranked & reviewed

1. S07E01Season's bestAliens and StargatesJanuary 24, 2014 8.3Legends from around the world speak of sacred entryways to the land of the gods. Gates that allowed instant passage not just beyond the conf
2. S07E02Aliens in AmericaJanuary 31, 2014 8.0Strange rock carvings from 8,000 B.C. Unexplained sightings in the new world. And a frightening anomaly plaguing the American West. Is there
3. S07E03The Star ChildrenFebruary 7, 2014 7.8On every continent, there are stories of children who "stand out" for their strange abilities and advanced knowledge. They are said to have
4. S07E04Treasures of the GodsFebruary 14, 2014 8.3Sealed vaults possessing a strange and deadly curse, mysterious relics believed to be under otherworldly protection, and riches so priceless
5. S07E05Aliens and the Red PlanetFebruary 21, 2014 7.8Throughout human history, the planet Mars has captured our imagination. Ancient Egyptian astronomers were the first to record the red planet
6. S07E06The ShamansFebruary 28, 2014 8.0Throughout history, spiritual leaders known as shamans have healed, protected and advised their people. But are they simply putting on elabo
7. S07E07Aliens and InsectsMarch 7, 2014 8.0Earth is home to 10 quintillion insects. In cultures throughout the world, insects have been honored, feared and even revered as gods. But m
8. S07E08Alien BreedersMarch 14, 2014 8.0Demonic seduction... hybrid offspring... and strange abductions. In cultures throughout the world, there are tales of intimate encounters wi

Season 7 ranked & reviewed

1. S08E01Alien TransportsJune 13, 2014 8.0Ancient cultures around the world tell stories of strange objects witnessed flying in the sky. But are these tales fiction, or might people
2. S08E02Mysterious StructuresJune 20, 2014 8.0All over the world there are megalithic stone structures whose construction baffle stonecutters, scientists and archeologists. Is it possibl
3. S08E03Mysterious DevicesJune 27, 2014 8.0A 2,000-year-old computer... a power plant inside the Great Pyramid... and a Nazi-era time machine with roots in the ancient history. Throug
4. S08E04Faces of the GodsJuly 25, 2014 8.0Throughout history, there are stories of strange beings unlike anything known to exist on Earth. Could they be more than just mythology? Cou
5. S08E05The ReptiliansJuly 25, 2014 8.0The Reptilian alien is a fixture of science-fiction, from H.P. Lovecraft's tales of Valusians to the Cardassians in Star Trek, to the Visito
6. S08E06Season's bestThe Tesla ExperimentAugust 1, 2014 8.3He is one of the most prolific inventors of the 20th century--and the man that actually electrified the world. Nikola Tesla shepherded manki
7. S08E07The God ParticleAugust 8, 2014 7.8It has been called the key to the universe and possibly the most important scientific breakthrough of all time. Could the so-called "God Par
8. S08E08Alien EncountersAugust 15, 2014 8.0Stories of strange encounters accompany many of history's major events. Is it merely coincidence? Or might it be evidence of extraterrestria
9. S08E09Aliens & SuperheroesAugust 22, 2014 8.0From the beginning of recorded history, humans have told stories about beings with super-human strength, super-sonic speed, and supernatural

Season 8 ranked & reviewed

1. S09E01Forbidden CavesOctober 31, 2014 7.8Could the darkest recesses of our planet contain important information left by our ancient ancestors? And within Earth's mysterious caves, m
2. S09E02Season's bestMysteries of the SphinxNovember 7, 2014 8.5The Great Sphinx in Giza is the largest and most studied monolithic sculpture on Earth, yet it remains one of humanities greatest mysteries.
3. S09E03Aliens Among UsNovember 14, 2014 8.0There are those who believe that the evolution of technology is not entirely of our own making. Ancient Astronaut theorists contend that it
4. S09E04The Genius FactorNovember 21, 2014 8.5Throughout history, many of the world's greatest thinkers have helped push civilization forward with their profound insights and extraordina
5. S09E05Secrets of the MummiesNovember 28, 2014 7.7For thousands of years, in cultures throughout the world, people have practiced elaborate techniques to preserve the human body after death.
6. S09E06Alien ResurrectionsDecember 5, 2014 8.0Throughout history, incredible stories have been told of the dead rising from their graves, mummies journeying into the afterlife, and peopl
7. S09E07Alien MessagesDecember 19, 2014 6.8There are those who believe that embedded in our most sacred religious texts, as well as in the design and location of ancient monuments, ar
8. S09E08The Great FloodDecember 23, 2014 7.2It is a story told in more than twelve hundred cultures around the world--the gods sent a great flood to wipe out humanity for its disobedie
9. S09E09Aliens and the Civil WarApril 10, 2015 6.4The Civil War nearly destroyed the great experiment known as the United States of America, but is it possible that the preservation of the r
10. S09E10Hidden PyramidsApril 17, 2015 7.0With infrared satellite technology detecting pyramids hidden underneath the sand in Egypt and airborne laser sensors discovering long lost p
11. S09E11The VanishingsApril 24, 2015 6.8Stories of civilizations large and small disappearing without a trace can be found throughout history and across the globe. From a previousl
12. S09E12The Alien AgendaMay 1, 2015 7.0Many of humanity's most significant turning points have bore witness to unexplainable events. Is this merely coincidence, or could it be evi

Season 9 ranked & reviewed

1. S10E01Aliens B.C.July 24, 2015 7.0Enormous manmade caves... Unexplainable structures... And underwater discoveries that challenge everything we know about the past...Is it po
2. S10E02NASA's Secret AgendaJuly 31, 2015 7.2When German aerospace engineer Wernher von Braun joined the U.S. military and space programs after World War II, he quickly became one of th
3. S10E03Aliens and RobotsAugust 7, 2015 7.0Incredible strength… Superior intelligence… And even the ability to reproduce. In the 21st century, robots are being programmed to do everyt
4. S10E04Dark ForcesAugust 14, 2015 7.2Good and Evil. Light and Dark. God and Satan. In nearly every culture there are stories of opposing forces at work here on Earth--forces of
5. S10E05The Alien EvolutionAugust 21, 2015 7.0Ancient Astronaut theorists have suggested that many of the divine beings depicted in cultures throughout the world are not really divine--o
6. S10E06The Other EarthAugust 28, 2015 7.2Billions of dollars have been spent in our quest to find an "other Earth." Since the launch of the Kepler Telescope in 2009, scientists have
7. S10E07Creatures of the DeepSeptember 4, 2015 6.8In August of 2014, Russian cosmonauts aboard the International Space Station discovered something incredibly unexpected covering parts of th
8. S10E08Circles from the SkySeptember 18, 2015 7.0Over 10,000 crop circles have been reported worldwide, appearing in 50 different countries, and nearly every continent on Earth. These stran
9. S10E09The Alien WarsOctober 2, 2015 7.2On March 19th, 2002, Gary McKinnon was arrested for hacking into 97 Pentagon and NASA computers over a 13-month period, in what authorities
10. S10E10Season's bestThe Forbidden ZonesOctober 9, 2015 7.3Due to warfare, instability, and inaccessibility--there are specific regions of the world that are off-limits to exploration. These forbidde

Season 10 ranked & reviewed

1. S11E01Pyramids of AntarcticaMay 6, 2016 8.0Antarctica is Earth's most remote and least explored continent. It is buried under as much as three miles of ice in some places, but recent
2. S11E02Destination MarsMay 13, 2016 7.7Within 20 years, we are expecting to send the first colonizers to the Red Planet. Astronauts will brave the six-month journey to become the
3. S11E03Season's bestThe Next HumansMay 20, 2016 8.4In the 21st century, technology is heading in a radical new direction--the merging of man and machine. Smart drugs, nanorobots, and machine-
4. S11E04The New EvidenceMay 27, 2016 8.0Millions of people around the world believe we have been visited in the past by extraterrestrial beings. What if it were true? This is the q
5. S11E05The VisionariesJune 10, 2016 8.3Scientists theorize that when mankind encounters extraterrestrials, we'll need to speak to them through the universal language of mathematic
6. S11E06Decoding the Cosmic EggJune 17, 2016 8.0A "Cosmic Egg" — in which the universe, or some primordial being comes into existence by the hatching of an egg — is found in the creation m
7. S11E07The Wisdom KeepersJune 24, 2016 7.9The Aborigines of Australia are the oldest, continuously surviving society on Earth. The stories preserved in their oral tradition are said
8. S11E08The Mysterious NineJuly 8, 2016 7.7In 2013, former Canadian Minister of Defense, Paul Hellyer, made a shocking claim--that there is a federation of extraterrestrial beings mon
9. S11E09The Hidden EmpireJuly 15, 2016 7.9Ancient Astronaut theorists suggest that evidence of extraterrestrial visitation exists in every corner of the Earth, but some say the most
10. S11E10The PrototypesJuly 22, 2016 7.5Recent archaeological discoveries reveal a very different picture of what life on Earth looked like in the remote past. It was a real-life v
11. S11E11Space Station MoonJuly 29, 2016 8.0It was mankind's finest hour, the greatest technological achievement of the 20th Century--the Apollo 11 mission to the Moon. But the Apollo
12. S11E12Russia's Secret FilesAugust 12, 2016 8.0Russia is a vast country, spanning over 6 million square miles of some of the most rugged terrain on Earth, much of which is uninhabited and
13. S11E13Beyond RoswellAugust 19, 2016 7.6The U.S. military has long denied that the infamous 1947 Roswell crash was anything other than a weather balloon, but FBI files released in
14. S11E14The ReturnedAugust 26, 2016 7.4Thousands of people from every part of the world have reported being abducted by aliens, including even a world leader--President Kirsan Ily
15. S11E15Shiva the DestroyerSeptember 2, 2016 7.6Theorists suggest that Shiva, an important Hindu god, may have been the leader of an extraterrestrial faction that came to Earth wielding ad

Season 11 ranked & reviewed

1. S12E01Season's bestThe Alien HuntersApril 28, 2017 8.5Starting in 1947, a series of unexplained events and sightings prompts U.S. government officials to become alien hunters; theorists offer ev
2. S12E02Forged by the GodsMay 5, 2017 7.1Theorists speculate about metal artifacts that could provide physical evidence of extraterrestrials visiting Earth in the distant past; in J
3. S12E03The Mystery of Rudloe ManorMay 12, 2017 7.3In Wiltshire, England, Rudloe Manor appears to be nothing more than an English manor house, but researchers argue it has been the epicenter
4. S12E04The Alien ArchitectsMay 19, 2017 7.1Many of the architectural marvels of the ancient world bear striking similarities to one another, even though they were built by civilizatio
5. S12E05The Pharaohs' CurseMay 26, 2017 7.2According to legend, an ancient curse was placed upon the tomb of King Tutankhamun, and when that tomb was opened in 1922, a series of terri
6. S12E06The Science WarsJune 2, 2017 7.2Nearly every year archaeologists and anthropologists make discoveries that require revisions to our history books. But there are numerous ar
7. S12E07City of the GodsJune 9, 2017 7.2The ancient site of Teotihuacan in central Mexico--which the Aztecs called the "City of the Gods"--is one of the world's greatest mysteries.
8. S12E08The Alien FrequencyJune 16, 2017 7.5The use of mantras and chanting to connect with a higher plane has existed in cultures all over the world dating back thousands of years, bu
9. S12E09The Majestic TwelveJuly 7, 2017 7.2A roll of film surfaces containing pictures of a memo informing president-elect Dwight Eisenhower about the existence of a top-secret group
10. S12E10The Akashic RecordJuly 14, 2017 7.5Researchers ask if Cloud computing represents the rediscovery of an ancient repository of knowledge known as the Akashic Record; neuroscient
11. S12E11Voices of the GodsJuly 21, 2017 7.3India's Sanskrit texts are filled with incredible stories about advanced technology in the ancient world. Highly complex building techniques
12. S12E12The Animal AgendaJuly 28, 2017 6.1Extraterrestrials are almost always envisioned as humanoid, but is this an egocentric concept? Could it be that intelligent alien life looks
13. S12E13The ReplicantsAugust 4, 2017 7.2Across the globe, over 1.5 billion people believe in reincarnation, the belief that a soul can be reborn into a different body after death.
14. S12E14A Spaceship Made of StoneAugust 11, 2017 7.0In Honshu, Japan, stands one of the country's oldest and holiest Shinto shrines--the Ishi-no-Hoden megalith. Carved from a single rock and w
15. S12E15The Alien DisksSeptember 8, 2017 6.4Hundreds of strange disks are discovered in a cave in China that appear to tell the story of an ancient extraterrestrial crash on Earth. Sho
16. S12E16Return to Gobekli TepeSeptember 15, 2017 7.6The ancient site of Gobekli Tepe challenges everything modern archaeologists believe about mankind's past. The megalithic stone complex was

Season 12 ranked & reviewed

1. S13E01The UFO ConspiracyApril 27, 2018 7.3In 2017, it was revealed that the Department of Defense recently spent millions investigating reports of UFOs. This is the latest disclosure
2. S13E02Da Vinci's Forbidden CodesMay 4, 2018 7.3Researchers claim there are hidden messages that can be found within the works of Leonardo da Vinci--and other art throughout history--that
3. S13E03The Alien ProtocolsMay 11, 2018 7.0In 2017, a strange, cigar-shaped object entered our solar system from another star system traveling in such an unusual trajectory it caused
4. S13E04Earth's Black HolesMay 18, 2018 7.4Could black holes exist not just in outer space, but here on Earth? And if so, could Earth's Black Holes have caused strange disappearances
5. S13E05The Desert CodesMay 25, 2018 7.1Could giant ancient drawings found etched into the desert floor be part of an ancient alien code?
6. S13E06Area 52June 1, 2018 6.8Could Area 51's notoriety act as a cover up to much bigger, top-secret extraterrestrial experiments taking place at multiple locations?
7. S13E07Earth Station EgyptJuly 20, 2018 7.3Was Egypt home to Earth's earliest extraterrestrial visitors? Ancient Astronaut theorist Giorgio A. Tsoukalos explores the latest scientific
8. S13E08Island of the GiantsJuly 27, 2018 6.5Could the ancient ruins of Sardinia, Italy hold clues to an extraterrestrial past? Oak Island treasure hunter Marty Lagina and Ancient Astro
9. S13E09The TakenAugust 3, 2018 7.0Millions of people around the world have claimed to be abducted by extraterrestrials. Are these extraordinary accounts some form of mass psy
10. S13E10The SentinelsAugust 10, 2018 6.5Seven stone giants stand guard over a Pacific island. But what are they protecting--and from whom? Ancient Astronaut theorists Giorgio A. Ts
11. S13E11Russia DeclassifiedAugust 17, 2018 6.9A secret alliance hidden in plain sight. Joint space missions with undisclosed agendas. Have the United States and Russia been working toget
12. S13E12They Came from the SkyAugust 24, 2018 6.5Ancient cultures from around the world believed that meteorites were not merely rocks that fell from the sky, but sacred stones imbued with
13. S13E13The Artificial HumanAugust 31, 2018 6.9Are intelligent robots a threat to humanity--or the next step in human evolution? As man and machine begin to merge, are we fulfilling a des
14. S13E14Season's bestThe Alien PhenomenonJanuary 4, 2019 8.0Erich von Daniken's Chariots of the Gods challenged everything we thought we knew about mankind's history, suggesting that aliens visited Ea
15. S13E15Return to MarsJanuary 7, 2019 7.6As humanity prepares to establish colonies beyond Earth, are we simply realizing mankind's future or returning to its extraterrestrial past?

Season 13 ranked & reviewed

1. S14E01Season's bestReturn to AntarcticaMay 31, 2019 8.0Has Antarctica served as a home base for extraterrestrial visitors to Earth for thousands of years? As human exploration of the frozen conti
2. S14E02The Badlands GuardianJune 7, 2019 7.4Satellite images have revealed a giant face that appears to be carved into the Earth in Alberta, Canada, which has now become known far and
3. S14E03Element 115June 14, 2019 7.7The Infamous Alien "Element 115" mentioned by Bob Lazar over a decade ago is added to periodic table nowadays. New evidence is now being pre
4. S14E04The Star Gods of SiriusJune 21, 2019 7.3Did aliens from the tiny star Sirius B visit humans in the distant past, imparting the knowledge of civilization to peoples thousands of mil
5. S14E05They Came from the SeaJune 28, 2019 7.5Lurking in our oceans are creatures that defy explanation. Octopuses that can edit their own DNA. Animals that can regenerate their entire b
6. S14E06Secrets of the MayaJuly 5, 2019 7.6When Spanish Conquistadors obliterated the historical record of the Maya in the 16th century, did they wipe out evidence that ancient people
7. S14E07The Druid ConnectionJuly 19, 2019 6.5Did ancient Druids travel to New England and New York's Hudson Valley centuries ago, bringing with them the beliefs and technologies of thei
8. S14E08The Reptilian AgendaJuly 26, 2019 7.2Serpent gods are found in the religious traditions of Mesopotamia, Central and South America, India, China and Japan. Even the Bible describ
9. S14E09The Alien InfectionAugust 2, 2019 7.1In 2016, scientists made the astonishing discovery that 30 percent of all protein adaptations since humans' divergence with chimpanzees have
10. S14E10Project HybridAugust 9, 2019 7.0Are extraterrestrials altering human DNA and repopulating the Earth with alien/human hybrids? By following the trail of evidence from ancien
11. S14E11The Trans-DimensionalsAugust 16, 2019 7.2Could paranormal activity be explained by beings entering our world from other dimensions? According to some Ancient Astronaut theorists, en
12. S14E12Islands of FireAugust 23, 2019 6.8The native Hawaiians trace their ancestry to beings from the Pleiades star system called the Akua. Could these islands have once been inhabi
13. S14E13The Constellation CodeAugust 30, 2019 7.3Throughout the ancient world, structures were built to mirror the constellations in the night sky–and, in most cases, this is only apparent
14. S14E14The Nuclear AgendaSeptember 6, 2019 7.0Ever since the first atomic bomb was detonated in 1945, UFOs have been reported at nuclear facilities all over the world. Is it possible tha
15. S14E15The Alien MountainOctober 4, 2019 7.0A mysterious mountain in northern Italy has stood witness to strange sightings in the sky and unexplainable phenomena for hundreds of years.
16. S14E16The Alien BrainOctober 11, 2019 7.4Telepathy. Precognition. Psychokinesis. Is it possible that the human brain possesses extraordinary untapped abilities--given to us by extra
17. S14E17The Secrets of StonehengeOctober 18, 2019 7.7A shocking DNA study released in 2018 reveals that the original builders of Stonehenge mysteriously vanished. But where did they go? Could S
18. S14E18Food of the GodsNovember 1, 2019 7.5Texts, archaeology and legend contain evidence of past human-extraterrestrial contact.
19. S14E19Human HieroglyphsNovember 8, 2019 6.4Tattoos, piercings, and body modification account for a nearly one-billion-dollar industry. But are these practices being adopted by mainstr
20. S14E20The Storming of Area 51November 15, 2019 6.3In 2019, millions responded to an internet post advocating to storm the gates of the world's most top-secret military installation–Area 51.
21. S14E21Countdown to DisclosureNovember 22, 2019 7.2Are governments around the world preparing mankind for the most startling event in human history–the official disclosure of an extraterrestr
22. S14E22Secrets of the ExoplanetsNovember 29, 2019 7.3Over the past 20 years, thousands of potentially habitable exoplanets have been discovered outside our solar system. Could some of them be h

Season 14 ranked & reviewed

1. S15E01The Mystery of Nan MadolJanuary 25, 2020 7.2Giorgio Tsoukalos and David Childress explore the mysterious chain of manmade islets in Micronesia's Nan Madol. Built from a staggering 250
2. S15E02The Relics of RoswellFebruary 1, 2020 7.3In 1947 the U.S. military collected the debris of what they claimed was a crashed weather balloon outside of Roswell, New Mexico. But new ev
3. S15E03Destination ChileFebruary 8, 2020 7.1Chile boasts the highest number of annual UFO sightings of any nation on Earth. Now, incredible new footage of a strange craft–captured by a
4. S15E04The Real Men in BlackFebruary 15, 2020 6.6The allegations that the U.S. government is plotting with space aliens.
5. S15E05The Mystery of the Stone GiantsFebruary 22, 2020 7.1From Egypt to Easter Island, towering figures built by ancient man stand watch over the Earth. Are these stone giants simply a testament to
6. S15E06Season's bestThe World Before TimeFebruary 29, 2020 7.6Shocking new evidence reveals that advanced civilizations might have existed on Earth tens of thousands of years ago. Is it possible that a
7. S15E07They Came from the PleiadesMarch 7, 2020 7.1In numerous ancient cultures throughout the world, stories were told of ancestors that came to Earth from the Pleiades star cluster. Could n
8. S15E08The Immortality MachineMarch 14, 2020 7.4In the Mojave Desert, there is a structure built to bestow everlasting life--and according to the architect, the blueprint was provided by a
9. S15E09The ShapeshiftersMarch 21, 2020 6.5Accounts of creatures that can shapeshift from one form into another can be found throughout history. Could striking similarities between th
10. S15E10The Mystery of Skinwalker RanchMarch 28, 2020 7.0Nestled within a remote valley in Utah, is a ranch that some believe is a hotbed of strange, inexplicable phenomena including terrifying cre
11. S15E11The Ultimate Guide to UFO'sApril 11, 2020 7.3UFO witnesses have reported a wide variety of objects in Earth's skies--and not only in modern times, but for centuries. What might we learn
12. S15E12Aliens and the PresidentsApril 18, 2020 6.8The White House has consistently denied having any knowledge of alien craft visiting Earth, but presidential encounters with UFOs and other

Season 15 ranked & reviewed

1. S16E01The Divine NumberNovember 13, 2020 7.5In numerous sacred traditions, the number twelve holds a divine significance. It can be found repeated in ancient architecture, groups of tw
2. S16E02The Lost KingdomNovember 20, 2020 7.6According to the earliest Tibetan traditions, hidden high in the Himalaya Mountains is a kingdom of the gods--Shambhala. Is it possible that
3. S16E03The Galactic KeyholeDecember 4, 2020 7.4The mysterious symbol of the keyhole exists in mystic texts, sacred architecture and ancient artwork found all over the planet. Could this c
4. S16E04Giants of the MediterraneanDecember 11, 2020 7.1Ancient Cultures throughout the Mediterranean recorded stories of enormous beings that descended from the sky. Could massive megalithic stru
5. S16E05The Forbidden BibleDecember 18, 2020 8.0Rebellious angels, giant hybrid beings, and humans taken up to a heavenly realm above the Earth. Is it possible that The Book of Enoch was s
6. S16E06Season's bestWilliam Shatner Meets Ancient AliensFebruary 12, 2021 8.5In this extraordinary two-hour special, Shatner will bring thought-provoking questions to the leading experts of the show. Ancient Astronaut
7. S16E07Impossible ArtifactsFebruary 19, 2021 7.8Throughout the world, ancient objects have been found that leave archaeologists at a loss. Could these impossible artifacts suggest that adv
8. S16E08The Space TravelersFebruary 26, 2021 7.1It is humankind's most profound achievement: blasting off into the stars. But is it possible that our voyages into the cosmos are really a r
9. S16E09The UFO PioneersMarch 5, 2021 7.6In the 20th century, pioneering scientists, journalists and investigators defied convention and began documenting UFOs. Now, with incredible
10. S16E10The Harmonic CodeMarch 12, 2021 8.2Archaeologists have discovered that many ancient sites were built with an acoustic purpose, and often resonate at a frequency that has a pro

Season 16 ranked & reviewed

1. S17E01The Lost City of PeruAugust 6, 2021 7.1The South American nation of Peru is famous for its megalithic ruins, colossal geoglyphs and the Incan civilization. It's one of the most my
2. S17E02Top Ten Mysterious SitesAugust 13, 2021 7.0Ancient Aliens is counting down the world's top ten most mysterious sites, from the towering Moai statues of Easter Island to the enormous m
3. S17E03Top Ten Alien Cover-UpsAugust 20, 2021 7.1Ancient Aliens is counting down the world's top ten alien cover-ups, from the famous Roswell Incident to a secret military base rumored to b
4. S17E04The Mystery of Mount ShastaSeptember 17, 2021 7.0Mount Shasta in northern California is known as a hotbed of strange events, from Big Foot sightings to UFO encounters to hikers vanishing wi
5. S17E05Season's bestThe Human ExperimentSeptember 24, 2021 7.2Scientists now know that seven human-like species lived alongside Homo sapiens for thousands of years. But why is it that only humans surviv
6. S17E06Top Ten Alien EncountersOctober 1, 2021 6.9We're counting down the world's top ten alien encounters, from the first reported abduction event to mass UFO sightings over New York's Huds
7. S17E07Top Ten Alien ArtifactsOctober 8, 2021 6.8An ancient figurine of a modern-day airplane. A primitive statue of a man in a spacesuit. Mysterious crystal skulls whose origins are entire

Season 17 ranked & reviewed

1. S18E01The Disclosure EventJanuary 7, 2022 6.7In 2021, the United States government broke a 70-year precedent of denying UFOs and released a groundbreaking report on Unidentified Aerial
2. S18E02Mystery of the Standing StonesJanuary 14, 2022 6.9It is one of the greatest mysteries of the prehistoric world: why did people on nearly every continent erect giant standing stones? Accordin
3. S18E03Beneath the Sacred TemplesJanuary 21, 2022 6.8Some of the world's most iconic sacred temples were built atop of the ruins of far older structures and far more ancient. What compelled ear
4. S18E04The World on AlertJanuary 28, 2022 7.1Across the globe, high-ranking government officials are openly talking about Unidentified Aerial Phenomena. But why now? Ancient Astronaut t
5. S18E05Recovering the Ark of the CovenantFebruary 11, 2022 7.5Some 2,600 years ago, the most sacred relic of the ancient world suddenly disappeared from history: The Ark of the Covenant. Could descripti
6. S18E06Secrets of the Star AncestorsFebruary 18, 2022 7.3In the traditions of native peoples across North America are stories of the Star Ancestors--powerful beings who descended to Earth in the di
7. S18E07Alien Air ForceFebruary 25, 2022 7.1Since 2017, the Navy has been releasing photos and videos of Unidentified Aerial Phenomena--and Ancient Astronaut Theorists suggest the incr
8. S18E08The Shadow PeopleMarch 4, 2022 6.8Millions of people around the world have reported encountering shadowy entities who instill fear, shortness of breath. and even paralysis. I
9. S18E09Decoding the Dragon GodsMarch 11, 2022 6.9Throughout the ancient world, tales were told of fire-breathing dragons. Though fearsome, they were often worshipped as the bringers of grea
10. S18E10The Time BendersMarch 18, 2022 7.5Today, more people than ever before believe that Unidentified Flying Objects are of alien origin. But if extraterrestrials have come to Eart
11. S18E11Ancient Aliens On Location: Incredible StructuresJuly 8, 2022 6.4Ancient Aliens has traveled to many mysterious sites that seem to defy explanation. Now, Giorgio Tsoukalos takes a look back at some of the
12. S18E12Ancient Aliens On Location: Extraordinary EncountersJuly 15, 2022 6.8Ancient Aliens has followed investigators across the globe as they've gone directly to the sites where unexplained incidents have been repor
13. S18E13Ancient Aliens On Location: Decoding The Alien GlyphsJuly 22, 2022 6.8Ancient Aliens has examined the oldest and most mysterious rock art on Earth–up close and in person. Now, Giorgio Tsoukalos takes a look bac
14. S18E14Ancient Aliens On Location: The UFO InvestigationsJuly 29, 2022 6.6Ancient Aliens has met with eyewitnesses and traveled to the sites of incredible UFO incidents reported all over the world. Now, Giorgio Tso
15. S18E15Ancient Aliens On Location: Mysterious ArtifactsAugust 5, 2022 6.7Ancient Aliens has investigated the world's oldest and most incredible relics up close and in person. Now, Giorgio Tsoukalos takes a look ba
16. S18E16Season's bestAncient Aliens On Location: Evidence of Alien LifeAugust 12, 2022 7.8Ancient Aliens has followed investigators across the globe as they've gone directly to the sites where signs of alien life have been found.
17. S18E17The Shining OnesAugust 19, 2022 7.3In Ireland, the notion of the fairy folk dates back thousands of years and originates with stories of powerful shining beings who came down
18. S18E18The Journey to ImmortalityAugust 26, 2022 7.6Ancient cultures around the world often referred to the gods as the "Immortals" - but could they have encountered extraterrestrial beings th
19. S18E19Secrets of Inner EarthSeptember 9, 2022 7.2In the nearly 2,000-year-old text called "The Zohar," there is a curious passage that describes hidden realms beneath the surface of the Ear
20. S18E20Return of the Egyptian GodsSeptember 16, 2022 7.6In the 20th century, a mysterious British woman who claimed to be the reincarnation of an ancient Egyptian priestess shocked Egyptologists b

Season 18 ranked & reviewed

1. S19E01The Hotspots ConnectionJanuary 6, 2023 6.8Studies have shown that up to 70% of all UFO sightings happen in so-called 'hotspots' where reports of visions, mysterious lights and unusua
2. S19E02The Crop Circle CodeJanuary 13, 2023 7.0More than 10,000 crop circle formations have been documented in over 50 countries, and many display properties that defy conventional explan
3. S19E03Mystery of the Lost CivilizationJanuary 20, 2023 6.6The discovery of the ancient megalithic site of Karahan Tepe in southern Turkey turned the world of archaeology on its head, displaying engi
4. S19E04The Power of the ObelisksFebruary 3, 2023 6.5The towering obelisks of ancient Egypt weigh hundreds of tons and each was perfectly carved from a single granite rock. While mainstream sch
5. S19E05The MUFON FilesFebruary 10, 2023 6.9The Mutual UFO Network–better known as MUFON–is the world's leading organization devoted to the scientific investigation of unidentified aer
6. S19E06Cosmic ImpactsFebruary 17, 2023 6.5Meteor impacts have significantly altered our world, creating the perfect environment for the rise of humankind and delivering metals essent
7. S19E07Close Encounters of the Fifth KindFebruary 24, 2023 7.1The Center for the Study of Extra-Terrestrial Intelligence defines a "Close Encounter of The Fifth Kind" as direct human contact and communi
8. S19E08The Mysteries of AlaskaMarch 3, 2023 6.6The vast Alaskan wilderness is well known for mysterious disappearances, electromagnetic anomalies, stories of strange creatures, and is a h
9. S19E09Aliens in our AirspaceMarch 10, 2023 6.5Terrifying encounters at 40,000 feet. Pilot accounts of UFOs taking control of their aircraft. Entire jumbo jets disappearing into thin air.
10. S19E10The Giants of MaltaMarch 17, 2023 6.8Enormous, megalithic structures of mysterious origins. A vast underground complex containing the remains of what some believe to be otherwor
11. S19E11The Top Ten Pyramid SitesJune 30, 2023 6.8Ancient Aliens is counting down the world's top 10 pyramid sites, from a valley in Peru with over 250 hidden pyramids to an ancient Greek ci
12. S19E12The Top Ten Mysterious DevicesJuly 7, 2023 6.8Ancient Aliens is counting down the world's top ten mysterious devices, from strange, grooved disks found in a cave in China to an ancient G
13. S19E13The Top Ten Mysterious IslandsJuly 14, 2023 6.6"Ancient Aliens" is counting down the world's top 10 mysterious islands, including sites said to be home to giants, remote landmasses that a
14. S19E14The Top Ten Alien CraftJuly 21, 2023 6.4Around the world and throughout history, people have reported seeing very similar types of unidentified objects in the sky. Now, Ancient Ali
15. S19E15Season's bestEdgar Cayce: The Sleeping ProphetAugust 4, 2023 7.3In the early 1900s, a modern-day prophet from the hills of Kentucky became a worldwide sensation: Edgar Cayce. He claimed to receive visions
16. S19E16The Gods of GreeceAugust 11, 2023 7.3More than 3,000 years ago, the ancient Greeks built an empire that is considered the birthplace of Western Civilization, and they credited t
17. S19E17The New UFO HuntersAugust 18, 2023 6.6In the 21st century, UFOs have gone from fringe science to mainstream obsession. A new generation of UFO hunters is employing incredible tec
18. S19E18Power of the TalismanAugust 25, 2023 6.9For thousands of years, people have held the belief that everyday objects can possess hidden energy. Talismans are seen as providing protect
19. S19E19The Top Ten Mysteries of the DeepSeptember 8, 2023 6.3Ancient Aliens is counting down the top ten mysteries of the deep, from sunken continents to puzzling ruins on the ocean floor and even arti
20. S19E20The Top Ten Alien PetroglyphsSeptember 15, 2023 6.0"Ancient Aliens" is looking at alien petroglyphs around the world; from strange, human-like figures to flying craft and carvings of what app

Season 19 ranked & reviewed

1. S20E01The Top Ten Alien InfluencersJanuary 5, 2024 6.4Did a biblical patriarch receive instructions from 200 angels high above the earth? Were the ancient Greeks taught how to work metal by a ra
2. S20E02The Top Ten Extraordinary CreaturesJanuary 12, 2024 6.7For more than a decade, Ancient Aliens has collected dozens of reports of encounters with strange and mysterious beasts. Now, Ancient Astron
3. S20E03The Top Ten Hidden Alien BasesJanuary 19, 2024 5.6Ancient Aliens is counting down the top ten locations around the world that just might be hiding alien bases, including a cavern beneath the
4. S20E04The Top Ten Scariest EncountersFebruary 2, 2024 6.3Ancient Aliens is counting down the top ten scariest encounters that just might be evidence of extraterrestrial visitation. From an encounte
5. S20E05The Top Ten Alien CodesFebruary 9, 2024 6.6Ancient Aliens is counting down the top ten of the most intriguing–and mysterious–symbols and codes found across the globe that just might c
6. S20E06The Top Ten Alien DisastersFebruary 16, 2024 6.3Ancient Aliens is counting down the top ten most devastating disasters ever documented that might have an otherworldly connection, from a fl
7. S20E07Secrets of the SumeriansFebruary 23, 2024 7.6More than 7,000 years ago, the ancient Sumerians established what is considered the world's first civilization, and they credited their extr
8. S20E08The UFO SuperhighwayMarch 1, 2024 6.8Along the Earth's north 37th parallel there have been so many reports of unidentified flying objects, animal mutilations, and other mysterio
9. S20E09Mysteries of ScotlandMarch 8, 2024 7.1For thousands of years, Scotland has been an epicenter of otherworldly phenomena. It is home to mysterious ancient stone circles, stories of
10. S20E10Mystery of the Stone SpheresMarch 15, 2024 7.0Throughout the world there are mysterious ancient stones shaped into perfect spheres. Many of them show clear evidence of being manmade and
11. S20E11Mysteries of the MayaJune 28, 2024 7.6Considered by many to be the greatest civilization in the history of the Americas, the Maya thrived for more than 2,000 years. Now, new evid
12. S20E12Unlocking The StargatesJuly 5, 2024 7.3For thousands of years, cultures around the world have held a belief in stargates through which beings have traveled to Earth from distant p
13. S20E13The WhistleblowersJuly 12, 2024 7.1Crashed UFOs. Recovered alien entities. Secret programs. For decades, incredible claims have been made about an extraterrestrial presence on
14. S20E14The Search for Extraterrestrial IntelligenceJuly 19, 2024 7.1For thousands of years, humankind has attempted to make contact with beings from beyond Earth. Now, in the 21st century, the search for extr
15. S20E15Season's bestJacques Vallée: UFO PioneerAugust 9, 2024 7.9Dr. Jacques Vallee holds multiple scientific degrees, is a best-selling author, and is one of the fathers of the internet. But he is best kn
16. S20E16The TeachersAugust 16, 2024 7.1Throughout ancient cultures there are stories of god-like beings providing instruction to early humans, helping our ancestors to establish t
17. S20E17Egypt's Giant TombsAugust 23, 2024 7.1Deep beneath the sands of Egypt lie 24 enormous sarcophagi--and every one of them is empty. What purpose might these giant tombs have served
18. S20E18The Linda Moulton Howe FilesAugust 30, 2024 6.7For more than four decades, award-winning journalist Linda Moulton Howe has covered the most mysterious phenomena on Earth. Could her invest
19. S20E19The ChosenSeptember 6, 2024 6.4From biblical patriarchs to modern day alien abductees, throughout history, there have been people who claimed to have contact with otherwor
20. S20E20Resurrecting Puma PunkuSeptember 13, 2024 7.4Puma Punku in Bolivia features some of the largest stone blocks on Earth, each carved with incredible precision. But the blocks lie scattere

Season 20 ranked & reviewed

1. S21E01The Top Ten Extraordinary DiscoveriesFebruary 7, 2025 7.6Ancient Aliens is counting down ten of history's most astonishing discoveries – breakthroughs that challenge traditional beliefs about human
2. S21E02The Top Ten Mysterious MonolithsFebruary 14, 2025 7.6Ancient Aliens is counting down the world's top ten most mysterious monoliths, from a 500-ton stone believed to represent an ancient UFO, to
3. S21E03The Top Ten UFO CrashesFebruary 21, 2025 7.8Ancient Aliens is counting down ten of the most compelling UFO crashes that have been reported across the globe. From an acorn-shaped object
4. S21E04The Top Ten Unexplained TechnologiesFebruary 28, 2025 7.7Ancient Aliens is counting down ten of the most astonishing--and unexplainable--technologies in history. From mysterious golden orbs discove
5. S21E05The Top Ten Secret ProjectsMarch 7, 2025 7.8Ancient Aliens is counting down ten of history's most compelling -- and covert -- projects that study the UFO phenomenon. From clandestine g
6. S21E06The Top Ten Mysterious MountainsMarch 14, 2025 7.7Ancient Aliens is counting down ten mysterious mountains that are notorious for otherworldly phenomena.  From a summit in Sri Lanka that is
7. S21E07Season's bestMysteries of the AztecsMarch 21, 2025 8.3The 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 th
8. S21E08The Glowing Orb PhenomenonMarch 28, 2025 7.8Across the globe, reports of mysterious glowing orbs are on the rise. Their movements frequently defy the laws of physics, and now they are
9. S21E09The Legacy Of J. Allen HynekAugust 29, 2025 7.5Dr. J. Allen Hynek is best known as the notorious government UFO debunker who became one of the founding fathers of ufology. Was Dr. Hynek r
10. S21E10The Volcano FactorSeptember 5, 2025 7.7Volcanoes are Mother Nature's most fearsome and volatile creation. They have inspired countless myths and legends, but curiously, they are a
11. S21E11The Birdman MysterySeptember 12, 2025 7.2Throughout the ancient world, there are depictions of mysterious figures that appear to be half human and half bird. In many cultures, they
12. S21E12The Abduction FilesSeptember 19, 2025 7.0All over the world, there are people who claim they have been abducted by aliens. Since the 1970s, a growing number of researchers have dedi
13. S21E13The GiantsOctober 2, 2025 7.0Thousands of years ago, people all over the world described encounters with enormous, human-like beings, and some archaeologists even claim
14. S21E14Aliens In Our MidstOctober 9, 2025 7.0In the age of smartphones and social media, more evidence of otherworldly activity has come to light than ever before. From a giant "shadow
15. S21E15Britain's UFO FilesOctober 16, 2025 7.0From ancient sites like Stonehenge to the crop circle phenomenon and modern-day UFO sightings, Great Britain is a place of countless mysteri
16. S21E16Mysteries Of The Norse GodsOctober 23, 2025 7.6The ancient legends of the Norse read like modern science-fiction, with powerful gods wielding incredible weapons and high technology. Could
17. S21E17Secrets Of JapanNovember 6, 2025 7.6Japan is a land rich with ancient mysteries, and recently, it has also become known as a UFO hotspot. Could it be, as Ancient Astronaut Theo

Season 21 ranked & reviewed

1. S22E01Skulls of the GodsJanuary 15, 2026 7.4In every corner of the world, archaeologists have found strange, elongated skulls. Did our ancestors modify the shape of their skulls to res
2. S22E02Season's bestEgypt's Lost PyramidJanuary 22, 2026 7.8High above the Giza Plateau stands Egypt's most mysterious ancient site: the Lost Pyramid of Abu Rawash.
3. S22E03Islands of the GodsJanuary 29, 2026 7.0In the western Pacific Ocean is a vast area known as Oceania that is home to the world's most remote and mysterious islands. They are known
4. S22E04Extraterrestrial EngineeringFebruary 5, 2026 7.6From the precisely cut stone blocks at Puma Punku, to the gigantic temples of Malta, and the megalithic city of Nan Madol, could these myste
5. S22E05UFO Hot SpotsFebruary 26, 2026 7.0Found along the California coast to New York's Hudson Valley, and Northern England to Southern Chile, could these mysterious locations provi
6. S22E06Mysterious MonumentsMarch 5, 2026 6.8From a stone circle in Turkey that challenges the timeline of human history to gigantic stone spheres in Bosnia and Egypt's most unusual tom
7. S22E07Underwater Alien BasesJune 11, 2026 7.4The oceans are the most mysterious places on Earth. Countless legends tell of powerful beings living in the waters, and today they are major
8. S22E08Secrets of the VedasJune 18, 2026—Ancient scriptures called the Vedas form the foundation of Hinduism. These manuscripts are thousands of years old and describe a time when E
9. S22E09Wars of the GodsJune 25, 2026—Ancient legends describe a war in heaven that was fought by otherworldly beings with extraordinary weapons. Is it possible that our planet s
10. S22E10UFO SightingsJuly 2, 2026—
11. S22E11Alien A.I.July 9, 2026—
12. S22E12Hidden MessagesJuly 16, 2026—
13. S22E13Secrets of the AmazonJuly 23, 2026—
14. S22E14Alien InvestigatorsJuly 30, 2026—

Season 22 ranked & reviewed