The Best Episodes of Ancient Aliens

Last Updated: Nov 29, 2018

Ancient Aliens explores the controversial theory that extraterrestrials have visited Earth for millions of years. From the age of the dinosaurs to ancient Egypt, from early cave drawings to continued mass sightings in the US, each episode in this hit HISTORY series gives historic depth to the questions, speculations, provocative controversies, first-hand accounts and grounded theories surrounding this age old debate. Did intelligent beings from outer space visit Earth thousands of years ago?

The Da Vinci Conspiracy

#1 - The Da Vinci Conspiracy

Season 4 - Episode 8

Might an examination of Leonardo Da Vinci's masterful paintings, highly technical hand-drawn sketches, and private journals reveal knowledge of otherworldly technology and extraterrestrial beings?

star 8.09
209 votes
Watch on Amazon Buy on iTunes
Earth Station Egypt

#2 - Earth Station Egypt

Season 13 - Episode 7

Ancient astronaut theorist Giorgio A. Tsoukalos explores the latest scientific discoveries at some of the world's most ancient places to find evidence that extraterrestrials visited Egypt in the distant past.

star 8.01
156 votes
Watch on Amazon
The Artificial Human

#3 - The Artificial Human

Season 13 - Episode 13

A look at whether or not intelligent robots are a threat to humanity or the next step in human evolution; as man and machine begin to merge, humanity could be fulfilling a destiny prepared for by aliens thousands of years ago.

star 7.99
110 votes
Watch on Amazon
The Genius Factor

#4 - The Genius Factor

Season 7 - Episode 4

Throughout history, many of the world's greatest thinkers have helped push civilization forward with their profound insights and extraordinary abilities. But the majority of these master minds say their brilliance comes from a place they don't understand-and arrives at times they're not expecting it. In antiquity, people in nearly every culture around the world believed they did not possess genius, but that genius possessed them, like a spirit. Could it be that the forces of inspiration that the ancients attributed to the gods really did emanate from an otherworldly ...

star 7.97
152 votes
Watch on Amazon Buy on iTunes
The Tesla Experiment

#5 - The Tesla Experiment

Season 6 - Episode 16

He is one of the most prolific inventors of the 20th century--and the man that actually electrified the world. Nikola Tesla shepherded mankind to a new industrial era and laid the groundwork for today's technological age--but could that have been by some otherworldly design? A man shrouded in mystery and intrigue, Tesla would speak about obtaining insights in a flash of genius, how he could visualize his inventions in full-detail and manipulate them in his mind, and his compulsion to invent the future. But he also claimed to have direct communication from intelligent beings on other planets. Is it possible that this alleged mad scientist, so far ahead of his time, was actually a human "receiver"? A being tapped to advance mankind--and pave the way for a future reunion with our alien ancestors?

star 7.92
148 votes
Watch on Amazon Buy on iTunes
The NASA Connection

#6 - The NASA Connection

Season 4 - Episode 5

NASA scientists, former astronauts and secret government files all point to the conclusion that there has been contact with extraterrestrial life in the past. Researchers examine this and other recent scientific evidence that may provide proof of alien contact in both the recent and ancient past.

star 7.88
206 votes
Watch on Amazon Buy on iTunes
The UFO Conspiracy

#7 - The UFO Conspiracy

Season 13 - Episode 1

In 2017, news breaks that the Department of Defense recently spent millions investigating reports of UFOs; the latest disclosure about a series of secret government UFO projects dating back decades.

star 7.87
227 votes
Watch on Amazon
Aliens and Mega-Disasters

#8 - Aliens and Mega-Disasters

Season 4 - Episode 4

There are numerous historical, religious and mythic accounts of ancient civilizations being wiped out by volcanoes, earthquakes, floods, and meteors. Did god, or nature bring about such disasters? Or is it possible that celestial beings had a hand in the ancient world's catastrophic disasters?

star 7.87
182 votes
Watch on Amazon Buy on iTunes
The Alien Protocols

#9 - The Alien Protocols

Season 13 - Episode 3

In 2017, a strange, cigar-shaped object enters the solar system from another star system, traveling in such an unusual trajectory it causes some astronomers to suggest that it could be an extraterrestrial craft.

star 7.86
195 votes
Watch on Amazon
Aliens and Superheroes

#10 - Aliens and Superheroes

Season 6 - Episode 19

From the beginning of recorded history, humans have told stories about beings with super-human strength, super-sonic speed, and supernatural abilities. The ancients had heroic tales about Zeus, Thor, and Hanuman while today we have superhero stories about Superman, Batman, and Spider-man. Mythologists say these epic stories resemble each other because they may have all come from a common set of oral legends created eons ago by our earliest ancestors. But might there be another, more otherworldly reason that the world's heroic myths are so similar? Is it possible, as many Ancient Astronaut Theorists contend, that these stories are actually based on extraordinary-- and possibly extraterrestrial--beings that lived on Earth in the distant past?

star 7.85
123 votes
The Mystery of Puma Punku

#11 - The Mystery of Puma Punku

Season 4 - Episode 6

At 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 built this complex of sophisticated inter-locking blocks, and then vanished. Researchers investigate the ruins on-location in Peru and present new computer analyses. Forensic evidence on the ground, together with local myths and legends, suggest this site may have been designed and even once inhabited by a species of extraterrestrials.

star 7.84
218 votes
Watch on Amazon Buy on iTunes
Area 52

#12 - Area 52

Season 13 - Episode 6

A look at whether or not Area 51's notoriety acts as a cover-up to much bigger, top-secret extraterrestrial experiments taking place at multiple locations.

star 7.84
174 votes
Watch on Amazon
Aliens and the Creation of Man

#13 - Aliens and the Creation of Man

Season 3 - Episode 16

Why 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 otherworldly source? Could unexplained advances in human evolution be the work of interstellar beings? 10,000-year-old petroglyphs link our ancient ancestors with star beings. Might evidence of alien contact help unlock the mystery of the Creation of Man?

star 7.84
205 votes
Directors: Kevin Burns
Writers: Brian Coughlin; Rich Monahan
Watch on Amazon Buy on iTunes
Aliens and Dinosaurs

#14 - Aliens and Dinosaurs

Season 4 - Episode 10

Angkor Wat, Cambodia, is the world’s largest ancient religious temple. Within its megalithic ruins, researches have discovered a depiction of a species of dinosaur – a stegosaurus. But how could the ancients have had knowledge of animals that mainstream science says died out millions of years ago? Why are dinosaurs extinct? Did an alien race of beings kill off the dinosaurs to make room for humankind?

star 7.82
200 votes
Watch on Amazon Buy on iTunes
Aliens Among Us

#15 - Aliens Among Us

Season 7 - Episode 3

There are those who believe that the evolution of technology is not entirely of our own making. Ancient Astronaut theorists contend that it is by extraterrestrial design that we have become so technologically interconnected--and that we are being watched by beings from beyond our world. Do stories from the ancient past hold evidence of alien overseers? The Book of Enoch describes divine entities called the Watchers descending to Earth to monitor humankind and aid in our advancement. Inca legend states that the god Viracocha created humans and taught them astronomy,

star 7.82
195 votes
Buy on iTunes
City of the Gods

#16 - City of the Gods

Season 12 - Episode 7

Researchers suggest that the ancient site of Teotihuacan in central Mexico was once home to a highly advanced, perhaps extraterrestrial, civilization; excavations at Teotihuacan have unearthed discoveries out of place in the ancient world.

star 7.80
457 votes
Watch on Amazon
The Great Flood

#17 - The Great Flood

Season 7 - Episode 8

It 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 disobedient and wicked ways. Do these numerous creation myths point to an actual deluge, one that engulfed the world and spared only a chosen few? New evidence suggests that many fabled aspects of these flood myths may, in fact, be true. From traces of a major meteor impact in the Indian Ocean, to a worldwide ash layer, and even remnants of Noah’s grave site, scientists are starting to put the pieces of a very deadly puzzle together–a puzzle that some believe was created by extraterrestrial beings. Did humanity narrowly escape extinction? And are the ancient stories correct–that alien beings are the reason we survived? Ancient Astronaut Theorists believe they are–and that celestial beings are poised to save us again when another catastrophe sweeps across the Earth.

star 7.78
183 votes
Watch on Amazon Buy on iTunes
Voices of the Gods

#18 - Voices of the Gods

Season 12 - Episode 11

India's Sanskrit texts are filled with incredible stories about advanced technology in the ancient world. Highly complex building techniques, brain surgery, flying crafts, and even nuclear physics are described with uncanny accuracy. Hindu scholars attribute this knowledge to a time when "gods" walked among men. Might this period of time actually be referring to an age when extraterrestrials inhabited the planet? Giorgio A. Tsoukalos travels to India to further explore the Sanskrit texts, as well as the structures and technology that have stood the test of time. From a temple that inexplicably survived a major earthquake to evidence of ancient brain surgery and instructions for advanced flying machines, Giorgio studies the sacred knowledge that is said to have come directly from the voices of the gods.

star 7.78
356 votes
Watch on Amazon
Aliens and the Secret Code

#19 - Aliens and the Secret Code

Season 3 - Episode 13

Megalithic monuments linked together by electromagnetic energy... Prehistoric ruins arranged across vast distances in straight lines... And advanced mathematics carved into landmarks more than 5000 years ago. Were ancient man's spectacular structures built by humans alone? Or do they bear evidence of being designed--and interconnected--by otherworldly visitors?

star 7.77
218 votes
Directors: Kevin Burns
Writers: Kaylan Eggert; Rich Monahan
Watch on Amazon Buy on iTunes
The Return

#20 - The Return

Season 1 - Episode 5

There is evidence that suggests we experienced 20th century alien contact. In 1942, the Battle of Los Angeles involved the US military and Air Defense allegedly fighting a UFO. WWII Allied Air Force planes were buzzed by balls of light that some think could have been extraterrestrial. And the alleged crash of a flying saucer in Roswell, New Mexico in 1947 propelled the world into the age of UFOs. For decades, some people have been searching for the sounds of extraterrestrial intelligence, while others have been sending messages out into deep space. What would happen if aliens answered... or came calling? What protocols exist to determine who would speak on behalf of mankind, and how might we communicate? What happens if they return? Some believe they already have.

star 7.76
318 votes
Watch on Amazon Buy on iTunes
The Doomsday Prophecies

#21 - The Doomsday Prophecies

Season 4 - Episode 1

The Maya created the most sophisticated calendar systems in the ancient world, and according to many scholars their Long Count Calendar will come to an end on December 21, 2012. What does this mean for mankind? Some researchers believe it will usher in the return of Bolon Yokte--a mysterious god associated with creation and war. Could this god actually be an extraterrestrial as some ancient astronaut theorists believe? Other scholars believe the end of the calendar will bring about a series of catastrophic events that may threaten the very existence of mankind. They point to a rare galactic alignment that will coincide with the end of the Mayan calendar as proof of an impending geological catastrophe. If these doomsday prophecies prove to be true, will it mean the end of the world as we know it? Or could it reveal some profound truth about the origins of the human race?

star 7.76
228 votes
Watch on Amazon Buy on iTunes
The Greys

#22 - The Greys

Season 4 - Episode 3

Who are the beings with big heads and giant eyes that seem to have been visiting our planet for millennia? Known by researchers as the "greys," these mysterious beings have been depicted in rock-art and carved stone figures throughout the ages and all over the world. Who are they, what planet do they come from, and what do they want?

star 7.75
224 votes
Watch on Amazon Buy on iTunes
Earth's Black Holes

#23 - Earth's Black Holes

Season 13 - Episode 4

Theorists speculate about the existence of black holes on Earth, which may explain strange disappearances and other inexplicable phenomena.

star 7.75
206 votes
Watch on Amazon
Alien Encounters

#24 - Alien Encounters

Season 6 - Episode 18

Stories of strange encounters accompany many of history's major events. Is it merely coincidence? Or might it be evidence of extraterrestrial intervention? In ancient myths from cultures around the globe, gods are often portrayed intervening in human affairs. The Sumerian gods are said to have created mankind; the Hebrews believe God gave Moses man's first laws, the Ten Commandments, and the angel Gabriel reportedly shared divine wisdom with the prophet Muhammad. But is it possible that these supernatural visitations were not actually the work of the gods--but rather a race of extraterrestrials using advanced technology to create and shape our civilization? Ancient Astronaut Theorists believe aliens may have helped guide mankind in the remote past--and that evidence for this stunning conclusion can be found sprinkled throughout human history.

star 7.75
104 votes
Watch on Amazon
Aliens and Evil Places

#25 - Aliens and Evil Places

Season 3 - Episode 10

For thousands of years, there have been places around the world considered dangerous to humans. Might these locations hold the key to an otherworldly connection? At Australia's Black Mountains, local myths speak of ancient serpent gods and hikers disappearing. Every year hundreds are drawn to a dark forest at the base of Mount Fuji in Japan--to commit suicide. What causes these places to be evil? Could there be evidence that past extraterrestrial activity lead to the negative energy in Earth's evil places?

star 7.75
217 votes
Directors: Kevin Burns
Writers: Brian Coughlin
Watch on Amazon Buy on iTunes