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The Best Episodes of Ancient Aliens

Updated July 17, 2020 2.8k votes 1.3k voters 111.7k views80 items

List RulesVote for your favorite Ancient Aliens episodes, no matter how popular they are.

Do aliens exist? Have they visited earth? Are they responsible for innovations and unexplained phenomenons? The best episodes of Ancient Aliens attempt to answer these questions and more by investigating historical texts and folklore. Some good episodes of Ancient Aliens also explore the potential of past extraterrestrial contact.

What are the best episodes of Ancient Aliens? “The Tesla Experiment” is a fan favorite. This episode explores the notion that inventions created by Nikola Tesla may have been inspired by extraterrestrials. “The NASA Connection” is also a compelling episode of the Ancient Aliens franchise.

“Unexplained Structures” is another good episode from Ancient Aliens as is “Destination Orion” which hypothesizes why civilization through time have been focused on the Orion constellation.

Do you have a favorite installment of Ancient Aliens? Give the best episodes a vote up and vote down any episodes you may not have liked.

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  • 1
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  • 2
    Ancient Aliens - Season 0
    113
    36

    Original AiringJul 30 2009

    Episode Number1

    SeriesAncient Aliens

    What if life on Earth began in outer space? Millions of people accept the theory that intelligent life forms visited Earth thousands of years ago and were worshiped as gods by primitive man. Are...
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  • 3
    Ancient Aliens - Season 2
    69
    18

    Original AiringNov 25 2010

    Episode Number5

    SeriesAncient Aliens

    If ancient aliens visited Earth in the remote past, could they have given us advanced technology, past down through human history? And could this technology have helped the Third Reich build...
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  • 4
    Ancient Aliens - Season 4
    64
    18

    Original AiringMar 16 2012

    Episode Number6

    SeriesAncient Aliens

    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,...
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  • 5
    Ancient Aliens - Season 3
    53
    9

    Original AiringSep 22 2011

    Episode Number9

    SeriesAncient Aliens

    Iron swords forged in blazing hot fires... Gunpowder with the power to tear apart human flesh... And rockets capable of destroying entire cities... Throughout history, advances in technology have...
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  • 6
    Ancient Aliens - Season 3
    52
    10

    Original AiringSep 01 2011

    Episode Number6

    SeriesAncient Aliens

    Might the tools and technology of ancient builders have come from distant galaxies? Evidence suggests that an ancient mountaintop fortress in Peru was constructed with laser-like tools... temples at...
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  • 7
    Ancient Aliens - Season 1
    84
    40

    Original AiringApr 20 2010

    Episode Number1

    SeriesAncient Aliens

    If ancient aliens visited Earth, what was their legacy, and did they leave behind clues that exist in plain sight such as sophisticated aircraft, complex electrical grids, and intricate construction...
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  • 8
    Ancient Aliens - Season 3
    48
    9

    Original AiringOct 12 2011

    Episode Number12

    SeriesAncient Aliens

    Mass suicides. Human sacrifices. Unholy rituals. Throughout history, people have claimed to have otherworldly knowledge, and have led followers to commit horrific acts of violence. Are they con men?...
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  • 9
    Ancient Aliens - Season 4
    45
    10

    Original AiringFeb 17 2012

    Episode Number1

    SeriesAncient Aliens

    The Mayan civilization dominated Central America for nearly 2000 years, but by the 9th century A.D., the great Mayan cities were abandoned, and the Mayan people vanished. What could have happened to...
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  • 10
    Ancient Aliens - Season 4
    111
    74

    Original AiringMar 09 2012

    Episode Number5

    SeriesAncient Aliens

    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...  more
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  • 11
    Ancient Aliens - Season 5
    64
    32

    Original AiringJan 11 2013

    Episode Number4

    SeriesAncient Aliens

    Why were ancient civilizations around the world so focused on the Orion constellation? While scientists site many earthly connections, researchers suggest this point in the night sky may have been a...
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  • 12
    Ancient Aliens - Season 2
    101
    69

    Original AiringDec 16 2010

    Episode Number8

    SeriesAncient Aliens

    If ancient aliens visited Earth, can evidence of their existence be found in the mysterious structures that still stand throughout the world?...
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  • 13
    Ancient Aliens - Season 3
    35
    6

    Original AiringSep 15 2011

    Episode Number8

    SeriesAncient Aliens

    Mysterious legends and crumbling ruins are all that is left of our planet's lost worlds. But could there be proof of ancient alien visitors hidden among the artifacts of civilizations that have long...
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  • 14
    Ancient Aliens - Season 2
    48
    20

    Original AiringDec 09 2010

    Episode Number7

    SeriesAncient Aliens

    Biblical texts and ancient lore frequently describe winged creatures carrying messages from the heavens. But are angels merely the product of mankind's imagination - or do they really exist? If so,...
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  • 15
    Ancient Aliens - Season 7
    34
    8

    Original AiringJan 31 2014

    Episode Number2

    SeriesAncient Aliens

    Strange rock carvings from 8,000 B.C. Unexplained sightings in the new world. And a frightening anomaly plaguing the American West. Is there more to America's past than is found in our history books?...
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  • 16
    Ancient Aliens - Season 1
    82
    59

    Original AiringMay 25 2010

    Episode Number5

    SeriesAncient Aliens

    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...  more
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  • 17
    Ancient Aliens - Season 1
    34
    11

    Original AiringApr 27 2010

    Episode Number2

    SeriesAncient Aliens

    If ancient aliens visited Earth, who were they, and where did they come from? Possible historic evidence and beliefs are examined around the world. The Dogon people possess knowledge of a galaxy they...
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  • 18
    Ancient Aliens - Season 2
    31
    10

    Original AiringDec 30 2010

    Episode Number10

    SeriesAncient Aliens

    If ancient aliens visited Earth, were they responsible for catastrophes, wars and other deadly disasters to control the fate of the human race? Did aliens leave messengers for us to find years...
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  • 19
    Ancient Aliens - Season 5
    40
    21

    Original AiringJan 04 2013

    Episode Number3

    SeriesAncient Aliens

    Egyptian hieroglyphs depict the use of light bulbs in tombs and secret chambers. And batteries may have been discovered among artifacts from Mesopotamia. Did the Ancients understand electricity,...
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  • 20
    Ancient Aliens - Season 7
    29
    9

    Original AiringFeb 07 2014

    Episode Number3

    SeriesAncient Aliens

    On every continent, there are stories of children who "stand out" for their strange abilities and advanced knowledge. They are said to have knowledge of things they shouldn't or couldn't know. The...
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  • 21
    Ancient Aliens - Season 3
    30
    12

    Original AiringSep 28 2011

    Episode Number10

    SeriesAncient Aliens

    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...
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  • 22
    Ancient Aliens - Season 3
    33
    17

    Original AiringNov 16 2011

    Episode Number15

    SeriesAncient Aliens

    Superhuman strength... Supernatural powers... And the awesome ability to fly. Throughout history, mankind has told incredible tales of gods with extraordinary powers. But are these accounts merely...
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  • 23
    Ancient Aliens - Season 3
    24
    9

    Original AiringAug 25 2011

    Episode Number5

    SeriesAncient Aliens

    Throughout the world, ancient rites and rituals are believed to connect humans to another dimension. But just who--or what--are we communicating with? Could today's rituals, such as festivals,...
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  • 24
    Ancient Aliens - Season 4
    31
    19

    Original AiringMay 04 2012

    Episode Number10

    SeriesAncient Aliens

    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...
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  • 25
    Ancient Aliens - Season 6
    28
    17

    Original AiringFeb 21 2014

    Episode Number16

    SeriesAncient Aliens

    Throughout human history, the planet Mars has captured our imagination. Ancient Egyptian astronomers were the first to record the red planet on a chart of the cosmos known as the Senenmut star map....
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List Rules: Vote for your favorite Ancient Aliens episodes, no matter how popular they are.