36 Available, 138 Aired
Last Aired S11E12 on Aug 12, 2016
36 episodes available of 138 aired
6.5 (26 Ratings)
120 Min

Ancient Aliens is an American television series that premiered on April 20, 2010 on the History channel. Produced by Prometheus Entertainment, the program presents hypotheses of ancient astronauts and proposes that historical texts, archaeology and legends contain evidence of past human-extraterrestrial contact. The show has been criticized for presenting pseudoscience and pseudohistory. The series' de facto pilot was a TV special of the same name that aired on March 8, 2009. The second season began on October 28, 2010, and the third season began airing July 28, 2011. Season four premiered on February 17, 2012 but on H2 instead of the History channel. In June 2012, Giorgio A. Tsoukalos announced on Coast to Coast AM that the series has been renewed for a fifth season. Season 5 premiered on December 21, 2012.

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All Ancient Aliens (2010) Episodes

Ancient Aliens Seasons

  1. Watch Ancient Aliens Season 11 S11
    11 of 12 Ep. Available 2016
  2. 0 of 9 Ep. Available 2015
  3. 0 of 12 Ep. Available 2014
  4. 2 of 14 Ep. Available 2015
  5. 1 of 17 Ep. Available 2014
  6. 12 of 24 Ep. Available 2013
  7. 4 of 12 Ep. Available 2012
  8. 6 of 9 Ep. Available 2012
  9. 0 of 15 Ep. Available 2011
  10. 0 of 9 Ep. Available 2010
  11. 0 of 5 Ep. Available 2010

Ancient Aliens Episodes

  1. 12 Watch Ancient Aliens S11E12 online - Russia's Secret Files
    Available Aired on Aug 12, 2016
  2. 11
    Available Aired on Aug 05, 2016
  3. 10
    Available Aired on Jul 22, 2016
  4. 9
    Available Aired on Jul 15, 2016
  5. 8
    Available Aired on Jul 08, 2016
  6. 7
    Available Aired on Jun 24, 2016
  7. 6
    Available Aired on Jun 17, 2016
  8. 5
    Not Available Aired on Jun 10, 2016
  9. 4
    Available Aired on May 27, 2016
  10. 3
    Available Aired on May 20, 2016
  11. 2
    Available Aired on May 13, 2016
  12. 1
    Available Aired on May 06, 2016
  1. 9
    Not Available Aired on Oct 02, 2015
  2. 8
    Not Available Aired on Sep 18, 2015
  3. 7
    Not Available Aired on Sep 04, 2015
  4. 6
    Not Available Aired on Aug 28, 2015
  5. 5
    Not Available Aired on Aug 21, 2015
  6. 4
    Not Available Aired on Aug 14, 2015
  7. 3
    Not Available Aired on Aug 07, 2015
  8. 2
    Not Available Aired on Jul 31, 2015
  9. 1
    Not Available Aired on Jul 24, 2015
  1. 12
    Not Available Aired on May 01, 2015
  2. 11
    Not Available Aired on Apr 24, 2015
  3. 10
    Not Available Aired on Apr 17, 2015
  4. 9
    Not Available Aired on Apr 10, 2015
  5. 8
    Not Available Aired on Dec 23, 2014
  6. 7
    Not Available Aired on Dec 19, 2014
  7. 6
    Not Available Aired on Dec 05, 2014
  8. 5
    Not Available Aired on Nov 28, 2014
  9. 4
    Not Available Aired on Nov 21, 2014
  10. 3
    Not Available Aired on Nov 14, 2014
  11. 2
    Not Available Aired on Nov 07, 2014
  12. 1
    Not Available Aired on Oct 31, 2014
  1. 15
    Not Available Aired on Dec 19, 2014
  2. 13
    Not Available Aired on Dec 23, 2014
  3. 12
    Not Available Aired on Dec 05, 2014
  4. 11
    Not Available Aired on Nov 28, 2014
  5. 10
    Not Available Aired on Nov 21, 2014
  6. 9
    Not Available Aired on Nov 14, 2014
  7. 8
    Not Available Aired on Nov 07, 2014
  8. 7
    Available Aired on Oct 31, 2014
  9. 6
    Not Available Aired on Aug 22, 2014
  10. 5
    Not Available Aired on Aug 15, 2014
  11. 4
    Not Available Aired on Aug 08, 2014
  12. 3
    Not Available Aired on Aug 01, 2014
  13. 2
    Available Aired on Jul 25, 2014
  14. 1
    Not Available Aired on Jul 24, 2015
  1. 17
    Not Available Aired on May 12, 2015
  2. 16
    Not Available Aired on Jan 01, 2015
  3. 15
    Not Available Aired on Jan 01, 2015
  4. 14
    Not Available Aired on Dec 19, 2014
  5. 13
    Not Available Aired on Apr 24, 2015
  6. 12
    Not Available Aired on May 01, 2015
  7. 11
    Not Available Aired on Apr 24, 2015
  8. 10
    Not Available Aired on Apr 17, 2015
  9. 9
    Not Available Aired on Apr 10, 2015
  10. 8
    Not Available Aired on Dec 26, 2014
  11. 7
    Not Available Aired on Dec 19, 2014
  12. 6
    Not Available Aired on Dec 05, 2014
  13. 5
    Not Available Aired on Nov 28, 2014
  14. 4
    Not Available Aired on Nov 21, 2014
  15. 3
    Available Aired on Nov 14, 2014
  16. 2
    Not Available Aired on Nov 07, 2014
  17. 1
    Not Available Aired on Oct 31, 2014
  1. 28
    Not Available Aired on Aug 22, 2014
  2. 27
    Not Available Aired on Mar 17, 2016
  3. 26
    Not Available Aired on Aug 08, 2014
  4. 24
    Not Available Aired on Jul 25, 2014
  5. 23
    Not Available Aired on Jul 25, 2014
  6. 22
    Not Available Aired on Jun 27, 2014
  7. 21
    Not Available Aired on Jun 20, 2014
  8. 19
    Available Aired on Mar 14, 2014
  9. 18
    Available Aired on Mar 07, 2014
  10. 17
    Available Aired on Feb 28, 2014
  11. 15
    Not Available Aired on Feb 14, 2014
  12. 14
    Available Aired on Feb 07, 2014
  13. 13
    Not Available Aired on Jan 31, 2014
  14. 12
    Available Aired on Jan 24, 2014
  15. 11
    Not Available Aired on Dec 13, 2013
  16. 9
    Available Aired on Nov 29, 2013
  17. 8
    Available Aired on Nov 15, 2013
  18. 7
    Available Aired on Nov 08, 2013
  19. 6
    Available Aired on Nov 01, 2013
  20. 5
    Available Aired on Oct 28, 2013
  21. 4
    Available Aired on Oct 21, 2013
  22. 3
    Available Aired on Oct 14, 2013
  23. 2
    Not Available Aired on Oct 07, 2013
  24. 1
    Not Available Aired on Sep 30, 2013
  1. 12
    Not Available Aired on Apr 19, 2013
  2. 11
    Not Available Aired on Apr 12, 2013
  3. 10
    Not Available Aired on Apr 05, 2013
  4. 9
    Not Available Aired on Feb 22, 2013
  5. 8
    Available Aired on Feb 15, 2013
  6. 7
    Available Aired on Feb 08, 2013
  7. 6
    Available Aired on Jan 25, 2013
  8. 5
    Available Aired on Jan 18, 2013
  9. 4
    Not Available Aired on Jan 11, 2013
  10. 3
    Not Available Aired on Jan 04, 2013
  11. 2
    Not Available Aired on Dec 28, 2012
  12. 1
    Not Available Aired on Dec 21, 2012
  1. 10
    Available Aired on May 04, 2012
  2. 9
    Available Aired on Apr 27, 2012
  3. 8
    Available Aired on Apr 06, 2012
  4. 7
    Not Available Aired on Mar 23, 2012
  5. 6
    Available Aired on Mar 16, 2012
  6. 5
    Available Aired on Mar 09, 2012
  7. 3
    Available Aired on Feb 24, 2012
  8. 2
    Not Available Aired on Feb 17, 2012
  9. 1
    Not Available Aired on Feb 17, 2012
  1. 10
    Not Available Aired on Dec 30, 2010
  2. 9
    Not Available Aired on Dec 23, 2010
  3. 8
    Not Available Aired on Dec 16, 2010
  4. 7
    Not Available Aired on Dec 09, 2010
  5. 6
    Not Available Aired on Dec 02, 2010
  6. 4
    Not Available Aired on Nov 18, 2010
  7. 3
    Not Available Aired on Nov 11, 2010
  8. 2
    Not Available Aired on Nov 04, 2010
  9. 1
    Not Available Aired on Oct 28, 2010
  1. 5
    Not Available Aired on May 25, 2010
  2. 4
    Not Available Aired on May 18, 2010
  3. 3
    Not Available Aired on May 04, 2010
  4. 2
    Not Available Aired on Apr 27, 2010
  5. 1
    Not Available Aired on Apr 20, 2010

Watch Ancient Aliens season 11 episode 12 (S11E12)

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Watch Ancient Aliens season 11 episode 11 (S11E11)

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Watch Ancient Aliens season 11 episode 10 (S11E10)

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Watch Ancient Aliens season 11 episode 9 (S11E09)

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Watch Ancient Aliens season 11 episode 8 (S11E08)

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Watch Ancient Aliens season 11 episode 7 (S11E07)

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Watch Ancient Aliens season 11 episode 6 (S11E06)

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Theorists suggest that the iconic religious symbol of the cosmic egg demonstrates that human ancestors possessed a knowledge of the DNA double-helix spiral and human biological coding.

Watch Ancient Aliens season 11 episode 5 (S11E05)

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Watch Ancient Aliens season 11 episode 4 (S11E04)

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Watch Ancient Aliens season 11 episode 3 (S11E03)

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Watch Ancient Aliens season 11 episode 2 (S11E02)

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Ancient astronaut theorists suggest that manned missions to Mars could reveal the existence of extraterrestrial intervention.

Watch Ancient Aliens season 11 episode 1 (S11E01)

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Ancient astronaut theorists suggest that mysterious structures found in Antarctica could be evidence of extraterrestrials.

Watch Ancient Aliens season 10 episode 9 (S10E09)

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Ancient Astronaut theorists suggest that there are numerous factions of alien races with competing agendas visiting Earth, and that there is evidence they have been in conflict with each other for thousands of years. According to these theorists, there is evidence that these wars actually took place here on Earth in the distant past–not between gods, but between extraterrestrial visitors.

Watch Ancient Aliens season 10 episode 8 (S10E08)

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Ancient astronaut theorists suggest that crop circles are messages from extraterrestrials.

Watch Ancient Aliens season 10 episode 7 (S10E07)

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Ancient astronaut theorists suggest that legendary aquatic monsters such as kappa, Champ, and the Kraken may be alien creatures that originate from underwater wormholes to other dimensions.

Watch Ancient Aliens season 10 episode 6 (S10E06)

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Researchers discuss the possibility of humans finding life on Earth like planets, the colonization of other planets by humans and the potential colonization of our planet by extraterrestrials.

Watch Ancient Aliens season 10 episode 5 (S10E05)

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Ancient astronaut theorists suggest that prehistoric remains point to numerous extraterrestrial species inhabiting Earth.

Watch Ancient Aliens season 10 episode 4 (S10E04)

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Ancient astronaut theorists suggest that Grigori Rasputin, the Nazi SS, and Aleister Crowley were in league with sinister otherworldly entities.

Watch Ancient Aliens season 10 episode 3 (S10E03)

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Ancient astronaut theorists suggest that sophisticated robots really did exist in the ancient world.

Watch Ancient Aliens season 10 episode 2 (S10E02)

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Ancient astronaut theorists suggest that rocket technology pioneered by NASA and Wernher von Braun may have extraterrestrial origins.

Watch Ancient Aliens season 10 episode 1 (S10E01)

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Ancient astronaut theorists suggest that an alien civilization inhabited Earth in the distant past.

Watch Ancient Aliens season 9 episode 12 (S09E12)

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Researchers discuss the theory that aliens have been secretly influencing human history for thousands of years. Several things are discussed, among them: the Tower of Babel story, the destruction of Lanka from Hindu mythology, Mohenjo-daro and the Library of Alexandria, Paul Hellyer's extraterrestrial claims, the Annunaki and the Nazi's supposed advanced technology.

Watch Ancient Aliens season 9 episode 11 (S09E11)

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Researchers discuss the possibility that history's mysterious disappearances were caused by extraterrestrials transporting people to other planets.

Watch Ancient Aliens season 9 episode 10 (S09E10)

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Researchers discuss the possibility that aliens inspired long-buried megalithic pyramids which are only now being rediscovered.

Watch Ancient Aliens season 9 episode 9 (S09E09)

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Researchers discuss the possibility that aliens influenced the course of events in the American Civil War.

Watch Ancient Aliens season 9 episode 8 (S09E08)

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Researchers discuss the possibility that extraterrestrial beings were responsible for causing the Great Flood.

Watch Ancient Aliens season 9 episode 7 (S09E07)

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Researchers discuss the possibility that some strange and cryptic communications can help us unlock the mysteries of the universe and contact extraterrestrial beings.

Watch Ancient Aliens season 9 episode 6 (S09E06)

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Researchers discuss the possibility that incredible stories about the dead rising from their graves, mummies journeying into the afterlife, and people on the brink of death mingling with deceased relatives in a celestial netherworld are proof that extraterrestrials visited Earth in the distant past.

Watch Ancient Aliens season 9 episode 5 (S09E05)

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Researchers discuss the possibility that the global practice of mummification is proof that extraterrestrials visited Earth in the past.

Watch Ancient Aliens season 9 episode 4 (S09E04)

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Researchers discuss the possibility that many of history’s greatest scientists were inspired by extraterrestrial sources.

Watch Ancient Aliens season 9 episode 3 (S09E03)

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Researchers discuss the possibility that the evolution of technology is not entirely of our own making and that we are being watched by entities from beyond our world.

Watch Ancient Aliens season 9 episode 2 (S09E02)

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Researchers discuss the possibility that the Sphinx statue originally represented an otherworldly being that came to Earth some 10,000 years ago.

Watch Ancient Aliens season 9 episode 1 (S09E01)

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Researchers discuss the possibility that caves have served as portals for contact with extraterrestrial beings, becoming the inspiration for various mythological traditions.

Watch Ancient Aliens season 8 episode 15 (S08E15)

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Messages embedded in sacred religious texts, as well as in the design and location of ancient monuments that may reveal the purpose behind human existence.

Watch Ancient Aliens season 8 episode 13 (S08E13)

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New evidence suggests that many aspects in the mythical stories of a deluge sent by the gods to engulf the world may actually be true.

Watch Ancient Aliens season 8 episode 12 (S08E12)

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Taking a look at incredible stories of the dead rising from their graves; mummies traveling into the afterlife; people on the brink of death mixing with deceased relatives in a celestial netherworld.

Watch Ancient Aliens season 8 episode 11 (S08E11)

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Cultures all over the world have practiced complex techniques to preserve the human body after death; ancient Egyptians believed mummification ensured entrance into the next life; while Buddhist monks practiced self-mummification.

Watch Ancient Aliens season 8 episode 10 (S08E10)

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People around the globe believed they did not possess genius, but rather genius possessed them.

Watch Ancient Aliens season 8 episode 9 (S08E09)

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Exploring the theory that our technologically savvy is the work of extra-terrestrials that are watching us from beyond our world; inside the Inca legend, The Book of Enoch that describes the Watchers descending to Earth to aid our advancement.

Watch Ancient Aliens season 8 episode 8 (S08E08)

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The Great Sphinx in Giza defies explanation, pre-dates our earliest known civilizations and may conceal the secrets of our very origins.

Watch Ancient Aliens season 8 episode 7 (S08E07)

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Throughout the course of human history, some caves have been considered sacred places for spiritual encounter and enlightenment, while others have been feared as true portals to purgatory.

Watch Ancient Aliens season 8 episode 6 (S08E06)

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The ancient and modern-day superheroes may have originated from the same legends, which could have otherworldy origins.

Watch Ancient Aliens season 8 episode 5 (S08E05)

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Stories of strange encounters during major events in history and myths containing gods that intervene in human affairs may be early accounts of alien encounters.

Watch Ancient Aliens season 8 episode 4 (S08E04)

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Scientists at the CERN laboratory announce the discovery of the God Particle in 2012.

Watch Ancient Aliens season 8 episode 3 (S08E03)

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Inventor Nikola Tesla guided mankind toward a new industrial era.

Watch Ancient Aliens season 8 episode 2 (S08E02)

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The myths behind reptilian aliens may provide evidence that suggests the creatures are more than just science fiction.

Watch Ancient Aliens season 8 episode 1 (S08E01)

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Watch Ancient Aliens season 7 episode 17 (S07E17)

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Watch Ancient Aliens season 7 episode 16 (S07E16)

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Watch Ancient Aliens season 7 episode 15 (S07E15)

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Watch Ancient Aliens season 7 episode 14 (S07E14)

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Researchers discuss the possibility that some strange and cryptic communications can help us unlock the mysteries of the universe and contact extraterrestrial beings.

Watch Ancient Aliens season 7 episode 13 (S07E13)

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Stories of civilizations large and small disappearing without a trace can be found throughout history and across the globe. From a previously unknown civilization in China, a vanished race of giants, to the unexplained disappearances of the Classic Maya and the Anasazi--elements of these disappearances cannot be completely explained by conventional scholars. Although these cultures have vanished from the face of the Earth, they have left behind intriguing clues--clues, some say point to an otherworldly explanation. And if entire groups have been taken off planet, might there be a connection with sites connected to mysterious vanishings of people, planes, and boats in various locations throughout the world? Could examining these disappearances lead us to not only uncover evidence of extraterrestrial intervention in our remote past, but also reveal the consequences for the future of the human race?

Watch Ancient Aliens season 7 episode 12 (S07E12)

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Watch Ancient Aliens season 7 episode 11 (S07E11)

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Stories of civilizations large and small disappearing without a trace can be found throughout history and across the globe. From a previously unknown civilization in China, a vanished race of giants, to the unexplained disappearances of the Classic Maya and the Anasazi--elements of these disappearances cannot be completely explained by conventional scholars. Although these cultures have vanished from the face of the Earth, they have left behind intriguing clues--clues, some say point to an otherworldly explanation. And if entire groups have been taken off planet, might there be a connection with sites connected to mysterious vanishings of people, planes, and boats in various locations throughout the world? Could examining these disappearances lead us to not only uncover evidence of extraterrestrial intervention in our remote past, but also reveal the consequences for the future of the human race?

Watch Ancient Aliens season 7 episode 10 (S07E10)

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Watch Ancient Aliens season 7 episode 9 (S07E09)

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Researchers discuss the possibility that aliens influenced the course of events in the American Civil War.

Watch Ancient Aliens season 7 episode 8 (S07E08)

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Researchers discuss the possibility that extraterrestrial beings were responsible for causing the Great Flood.

Watch Ancient Aliens season 7 episode 7 (S07E07)

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Researchers discuss the possibility that some strange and cryptic communications can help us unlock the mysteries of the universe and contact extraterrestrial beings.

Watch Ancient Aliens season 7 episode 6 (S07E06)

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Researchers discuss the possibility that incredible stories about the dead rising from their graves, mummies journeying into the afterlife, and people on the brink of death mingling with deceased relatives in a celestial netherworld are proof that extraterrestrials visited Earth in the distant past.

Watch Ancient Aliens season 7 episode 5 (S07E05)

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Researchers discuss the possibility that the global practice of mummification is proof that extraterrestrials visited Earth in the past.

Watch Ancient Aliens season 7 episode 4 (S07E04)

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Researchers discuss the possibility that many of history’s greatest scientists were inspired by extraterrestrial sources.

Watch Ancient Aliens season 7 episode 3 (S07E03)

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Researchers discuss the possibility that the evolution of technology is not entirely of our own making and that we are being watched by entities from beyond our world.

Watch Ancient Aliens season 7 episode 2 (S07E02)

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Researchers discuss the possibility that the Sphinx statue originally represented an otherworldly being that came to Earth some 10,000 years ago.

Watch Ancient Aliens season 7 episode 1 (S07E01)

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Researchers discuss the possibility that caves have served as portals for contact with extraterrestrial beings, becoming the inspiration for various mythological traditions.

Watch Ancient Aliens season 6 episode 28 (S06E28)

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Watch Ancient Aliens season 6 episode 27 (S06E27)

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Watch Ancient Aliens season 6 episode 26 (S06E26)

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Watch Ancient Aliens season 6 episode 24 (S06E24)

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Watch Ancient Aliens season 6 episode 23 (S06E23)

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Tales of angels and giants in the ancient world are examined to determine if the beings stem from mythology or extraterrestrial visits and experimentation on human DNA, and bizarre discoveries around the world may be the key to getting the answers.

Watch Ancient Aliens season 6 episode 22 (S06E22)

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A potential link between alien technology and mysterious devices from ancient cultures is examined.

Watch Ancient Aliens season 6 episode 21 (S06E21)

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Theorists explain how alien technology may be responsible for massive structures like the 3,000 megalithic stones in the French village of Carna, precision-cut blocks at Puma Punku in Peru and the Gobekli Tepe's 12,000-year-old circular structures.

Watch Ancient Aliens season 6 episode 19 (S06E19)

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Demonic seduction… hybrid offspring… and strange abductions. In cultures throughout the world, there are tales of intimate encounters with otherworldly beings. But could these stories be more than just mythology? Scientific deconstruction of human genetic makeup has revealed that our origins are not what we once believed. Biologists have determined that early humans mated with several other species of intelligent hominids. Neanderthals, Denisovans, and a third–as of yet unidentified–species may also be represented in our DNA. Is it possible that tales spanning from fallen angels to Greek gods, medieval incubus and succubus to today's extraterrestrial sexual encounters are all one in the same? And if so, is it all part of a greater agenda? Might examining these experiences provide not only evidence of extraterrestrial sexual intervention in the remote past, but also reveal the true nature of mankind's origins?

Watch Ancient Aliens season 6 episode 18 (S06E18)

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Earth is home to 10 quintillion insects. In cultures throughout the world, insects have been honored, feared and even revered as gods. But might these strange creatures that have inhabited Earth for hundreds of millions of years provide a link to extraterrestrial beings? Is it possible the ancient Egyptians encountered alien beings that had an insect-like appearance? Are the scorpion-tailed locust described in the Book of Revelations some type of advanced weaponry wielded by an extraterrestrial being? Might the Ant People that appear in both Greek and Native American mythology really be grey aliens? Is it possible that there is a connection between insects and aliens? Are insects related to beings from beyond our world, as some Ancient Astronaut theorists suggest? And if so, might they have a secret purpose we have yet to discover?

Watch Ancient Aliens season 6 episode 17 (S06E17)

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Throughout history, spiritual leaders known as shamans have healed, protected and advised their people. But are they simply putting on elaborate ceremonies? Or could they be in contact with extraterrestrial realms? The Mongol army crushed their enemies and built a massive empire with the help of powerful shamans who could manipulate the weather. Amazonian shamans believe otherworldly beings taught them how to create a powerful brew that allows them to travel beyond Earth to gain knowledge. And on the desert plains of the Kalahari, the San Bushmen practice elaborate trance dances that unlock supernatural capabilities in their healers. Can shamans really communicate with otherworldly beings? Is it possible that through these spiritual mediators, extraterrestrials were able to influence mankind in the distant past? And could such celestial communication continue even today?

Watch Ancient Aliens season 6 episode 15 (S06E15)

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Sealed vaults possessing a strange and deadly curse, mysterious relics believed to be under otherworldly protection, and riches so priceless, it has cost men their lives. On every continent there are stories of incredible treasures that have been lost for centuries. Is it possible that the world’s greatest ancient relics are hidden on purpose–and protected by an extraterrestrial source?

Watch Ancient Aliens season 6 episode 14 (S06E14)

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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 ancient Greeks, Egyptians and many other cultures have legends about exceptional children who are the offspring of humans and the gods. Could the stories be more than mere myth? Is it possible there are children being born on Earth today who can access their alien DNA–a connection that endows them with special gifts and the power to transform society?

Watch Ancient Aliens season 6 episode 13 (S06E13)

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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? Could the mysterious stories and relics found throughout the United States be evidence of extraterrestrial contact in the distant past? In 1909, the Phoenix Gazette reported the finding of a strange man-made cave filled with ancient objects and mummies. Could there be a connection between the mysterious cave and the legend of Native American ancestors called "Star Beings?" Strange lights and unexplained weather anomalies were documented throughout colonial America. Is there evidence that early American settlers had close encounters with extraterrestrial entities? Could UFO sightings and reports of alien contact be part of America's untold history?

Watch Ancient Aliens season 6 episode 12 (S06E12)

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Legends from around the world speak of sacred entryways to the land of the gods. Gates that allowed instant passage not just beyond the confines of Earth, but beyond space and time. Are such passages--or stargates--just inventions of myth, or might this kind of interstellar travel have existed in the ancient world? In Turkey, researchers uncover a mysterious and toxic cave that the ancient Greeks described as a physical gateway to Hell. The Incas believed their empire began when divine beings stepped through portals in a mountain. In Northern Mexico, legends describe strange, otherworldly creatures appearing and disappearing within the remote ruins of an ancient civilization. As science continues its quest to create technology that would allow humans to travel to the stars, is it possible that these celestial pathways already exist?

Watch Ancient Aliens season 6 episode 11 (S06E11)

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Across ancient civilizations, the world's mountains were viewed as the sacred home to all-powerful gods. Why would so many different cultures share this belief that mountains had a connection to otherworldly beings? The Greeks believed their most powerful gods, the Olympians, waged an epic war for control of the universe from Mt. Olympus. Ruins of a 4000-year-old observatory discovered on a mountain in Macedonia reveal that the ancients tracked celestial movements from on high with remarkable precision. And in Peru, the descendants of the Incans continue an ancient pilgrimage tradition in order to commune with mountain spirits known as Apu. Could these gods have been extraterrestrials? Did they use remote mountain peaks to interact with early man? Might this explain why humans have been drawn to mountains for thousands of years?

Watch Ancient Aliens season 6 episode 9 (S06E09)

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Remote islands might hold evidence of alien origins.

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Sacred bones… Golden hats… And fragments of sacred objects thought to possess healing properties. All around the world, archaeologists have uncovered mysterious relics revered by ancient cultures for thousands of years. Now on display in museums, temples and churches, millions of people travel great distances just to be in their presence. What is it about these ancient objects that draws people to them? Could the truth of mankind's origins be found in the fabric, metal, stone and bones of our distant past? And could these mysterious relics really provide us with the ability to access divine or otherworldly power?

Watch Ancient Aliens season 6 episode 7 (S06E07)

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Powerful monarchs ruling by divine right. Centuries-old dynasties amassing enormous wealth. And legendary leaders wielding powerful weapons of mass destruction. Is it possible that ancient rulers were, in fact, connected with divine or, some would say, extraterrestrial forces? And, if so, what was their purpose? Ancient emperors, kings, and pharaohs were often attributed with otherworldly strength, ability, and wisdom; many were even considered gods by the people they ruled. Who were these exceptional leaders, and how did some accomplish so much in their time? Ancient Astronaut theorists believe that these great rulers throughout history were "chosen" and guided by extraterrestrials. Is it possible that the world's legendary leaders might have shared a common genetic trait? A so-called, "leadership gene"? And might this gene have been–not a product of genetic evolution–but inherited by mankind from some otherworldly source?

Watch Ancient Aliens season 6 episode 6 (S06E06)

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Questioning how humans learned to heal by exploring ancient possibilities involving the human body, breakthroughs in medicine and medical procedures..

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Researchers discuss Satan and the worldwide concept of a devil figure.

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Researchers discuss magic, Merlin, and extraterrestrials.

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Researchers discuss a possible connection between extraterrestrials and the Mesopotamian deities known as the Anunnaki.

Watch Ancient Aliens season 6 episode 2 (S06E02)

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Researchers discuss the worldwide phenomena of the crystal skull.

Watch Ancient Aliens season 6 episode 1 (S06E01)

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Researchers discuss the Trimurti, Trinity and the common occurrence of the number three in ancient texts.

Watch Ancient Aliens season 5 episode 12 (S05E12)

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Exploring a potential link between ancient monoliths and extraterrestrials.

Watch Ancient Aliens season 5 episode 11 (S05E11)

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Examining a theory that aliens helped guide Viking voyages.

Watch Ancient Aliens season 5 episode 10 (S05E10)

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Examining author Erich von Daniken's controversial theories about alien life.

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In 1975, Travis Walton claims to have been abducted and taken aboard a space ship inhabited by extraterrestrial beings. Several people witnessed his encounter and nearly 40 years later Walton's story of alien abduction, missing time and mind-telepathy manipulation has not wavered. But researchers say that abductions are not a modern phenomenon. The Hebrew Bible is filled with stories of abductions by otherworldly beings. Jonah, Moses, Ezekiel and Enoch all depict what can best be described as physically being taken to other dimensions and then returned. Is it possible that extraterrestrial beings have been abducting humans for thousands of years and if so, might there be an alien agenda behind the phenomena?

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Erich von Daniken's landmark book, Chariots of the Gods, brought attention to the mysterious phenomena of the Nazca Lines. Hundreds of gigantic lines, some in the shape of animals, geometric patterns and even an alien-like being, extend for miles throughout a remote Peruvian desert. Scholars are divided as to who built them, and why. Some Ancient Astronaut theorists believe that the massive markings have an extraterrestrial connection, and perhaps the ancient people of the region created these gigantic figures in tribute to the gods who visited them. And with one of the largest deposits of nitrates in the world--a key ingredient in rocket fuel and weaponry--could Nazca have been a mining operation for advanced beings in the distant past?

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They were the messengers of divine knowledge and seers who shared visions of the future. For thousands of years, human civilization has been guided by the words and deeds of ancient prophets, but just who--or what--were these prophets communicating with? Might the experiences of history's prophets be evidence of communication with a heavenly source--or were seers like Elijah and Joseph Smith actually communicating with extraterrestrial overlords? And if so, are there similar prophets at work today?

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Across the globe, archaeologists have uncovered ancient tombs filled with strange items and writings. Remarkable similarities have been found at each of the sites. How is it possible that the burial chambers of distant cultures were so similar in design? Ancient Astronaut theorists believe that some of these complicated and technically advanced tombs were designed with the help of extraterrestrials.

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Was Albert Einstein a genius? Or was he superhuman? Was his genius ‘of this world,’ or was it ‘otherworldly?’ Is it possible, as Ancient Astronaut theorists believe, of an extraterrestrial connection to the scientific genius of famous historical figures such as Albert Einstein, Galileo, Archimedes, and Aristotle?

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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 so-called Stargate, or entry point, for alien life forms. If extraterrestrials have been visiting Earth for thousands of years, might they have originated from the Orion Nebula?

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Egyptian hieroglyphs depict the use of light bulbs in tombs and secret chambers. And batteries may have been discovered among artifacts from Mesopotamia.

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In 1980, three young military men were sent into a UK forest to investigate strange lights. They reportedly encountered a spacecraft of unknown origin. When one of the men touched it, he claims to have received telepathically a long sequence of binary code, which he later wrote down and translated. The military ordered them to never speak about the incident. Why do such UFO encounters continue to be kept under wraps, and what might they reveal about our ancient past?

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For thousands of years, pyramids were the largest structures on Earth. The best known were constructed in Egypt and Central America, but others have been found all around the world, including in China, Africa and Indonesia. But what purpose did the pyramids serve? Researchers explore strange similarities between all pyramids, as well as the geographic, strategic and otherworldly connections between these mysterious monumental structures.

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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?

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Is it possible that sightings of alien beings or UFOs may actually be evidence of time travelers from the future? And might ancient astronauts actually be time travelers from our future? Scientists explore the theoretical possibility of time travel. How can it be achieved? And what might people from 10,000 years in the future look like?

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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?

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People on every continent have claimed to see the footprints of Bigfoot. And ancient myths and legends speak of an ape-like giant stalking the earth. What if, as Ancient Astronaut theorists believe, there is evidence to connect Bigfoot with an alien species that once visited Earth in the distant past?

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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.

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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.

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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?

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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?

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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 this advanced culture? Might the Maya have left clues as to how they surpassed other cultures in science, mathematics, time keeping, and most importantly, astronomy? In recent years, hieroglyphs have been decoded to reveal that the Maya were able to accurately predict shifts in the Earth's axis every 26,000 years. Inscriptions on the sarcophagus of their most prominent ruler, King Pakal, tell of a journey to the Milky Way. And a sophisticated calendar foretells of the end of the world in 2012. Most striking is their belief that knowledge was passed to them by otherworldly beings who descended from the sky. Could the ancient Maya have actually conspired with extraterrestrial visitors to plan the future--and even the very end of the world?

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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?

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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 tall tales, or could they be based on factual events? If mythical gods really did exist, were they, as ancient astronaut theorists believe, extraterrestrial beings? And could this help to explain the enduring popularity of gods, titans and other so-called "super-heroes"?

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Zombies rising from their graves... Blood sucking vampires damned for all eternity... and humans trapped in a life and death struggle between heaven and hell. For thousands of years, mankind has told tales of encounters with strange, soulless creatures. Are these beliefs merely manmade fabrications--or could there be extraterrestrial origins in earthly encounters with the undead?

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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?

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What is the meaning behind secret messages found throughout Washington, D.C.? Did America's Founding Fathers know something about ancient aliens that the general public did not? And if so, could this knowledge have been incorporated into the symbols, architecture, and even the founding documents of the United States of America?

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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?

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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 lead to the development of powerful weapons--each more deadly than the last. But were these lethal weapons the product of human innovation--or were they created with help from another, otherworldly source?

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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 vanished? Strange carvings suggest the Mayan city of Copan was ruled by the descendants of otherworldly beings. And some believe the ancient Nazca people altered their bodies--and their lands--to signal the star gods to return. Are the astounding accomplishments of lost civilizations merely the products of ancient folklore--or could they have been something... out of this world?

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Scientists are continually challenged by unidentified strains of bacteria with mysterious origins. Could some of our most crippling plagues and epidemics be traced to the darkest voids of space--or even extraterrestrial intervention? During the Black Death of the Middle Ages, people reported bronze flying ships emitting a strange mist. As recently as 2011, NASA scientist Richard Hoover published evidence of life in meteorites. Is it possible that ancient aliens--as small as microbes--have shaped human history?

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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 Vijayanagara India were built to harness cosmic energy... and an acoustic chamber in Malta enabled interplanetary communication. If the ancient builders did use advanced technology, could it prove that aliens visited Earth thousands of years ago?

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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, coronations and funerals, be based on early man's attempts to emulate ancient alien visitors? If so, what other ancient rituals might find their roots in a kingdom--not of this world?

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Could 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 another part of the universe. Locals in Cusco, Peru believe UFO sightings are connected to lost gold at the bottom of Lake Puray. And some believe underneath the Great Sphinx of Giza lies an entire library left behind by extraterrestrials--a library stored on gold.

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Are sacred places the product of man's reverence for God--or the result of contact with ancient space travelers? Jerusalem's Temple Mount has been called a heavenly gateway. Islam's shrine at Mecca displays a Black Stone believed to have fallen from heaven. And the temple at Baalbek, Lebanon was built on a massive stone structure resembling a landing pad. Did man encounter divine beings at these holy places, or might they have met ancient extraterrestrials?

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Hindu scripture describes an enormous flying creature called a Garuda that shook the ground when it landed on Earth. Is it possible that this monster was actually a misinterpreted alien craft? Are hybrids like the Centaur, the Minotaur and Medusa just mythical creatures of fantasy–or could these ancient depictions of terrifying monsters have been the result of advanced extraterrestrial transplantation procedures?

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Ancient Astronaut theorists believe aliens have been visiting earth for thousands of years. If so, might we find evidence of this even in the stories of America's Old West? In Aurora, Texas, the local cemetery claims to hold the body of an alien whose ship crashed there in 1897. In Utah, petroglyphs depict strange beings wearing what look like space suits. In southern California, 19th century ranchers reported seeing an otherworldly creature emerge from Elizabeth Lake. And even in Tombstone, Arizona, the home of Wyatt Earp and the site of the gunfight at the O.K. Corral, cowboys claimed to have shot at a giant, metallic bird Are these simply campfire tales, or did the cowboys and native people of America's Wild West actually come in contact with alien beings from another--much more distant--frontier?

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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 later. ..

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If ancient aliens visited Earth, were they responsible for catastrophes, wars and other deadly disasters to control the fate of the human race? The story of the Great Flood sent by deities to destroy civilizations exists in many prehistoric cultures.

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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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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, where do they come from?

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Super-heated death rays... High-tech rockets... Powerful sonic weapons... Are these examples of modern day science or could these technologies have originated thousands of years ago? Is it possible that early man possessed scientific knowledge far beyond that of our own century? Ancient texts, folklore and art suggest humans witnessed disc-shaped flying machines and fire-spewing chariots. Could these be accounts of flying saucers and rocket ships? And if so, was advanced technology left here by visitors from the stars? Did mankind's quest to unlock the secrets of levitation, anti-gravity and laser technology merely spring from our imaginations or did these ideas come from otherworldly beings?

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If extraterrestrials influenced human history, can evidence of their existence be found in hidden tunnels and caverns around the world? Could a cave in Ecuador contain metallic books inscribed with secrets of alien technology? Was an ancient underground city in Turkey built with alien help... or as a refuge from an alien attack?

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Ancient underwater cities can be found around the globe, but could these aquatic worlds be the ruins of unknown civilizations--or even proof of extraterrestrial visitations? The infamous tale of the long lost city of Atlantis may be a preserved memory of an ancient alien metropolis.

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Myths and legends have long been regarded as fantastic stories that describe powerful gods, mutant giants and fearsome monsters. But why do so many different cultures, separated by vast distances, tell the same stories? Is it possible that myths and legends were really eyewitness accounts of ancient astronauts descending to Earth?

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Mysterious places can be found around the Earth, and, inexplicably, UFOs are often sited near these mystical areas. Planes and ships unaccountably disappear in the infamous Bermuda Triangle. Strange magnetic anomalies in Mexico's Zone of Silence have not only drawn missiles off their course, but seem to pull meteorites out of the sky.

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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.

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Reports of encounters with strange beings and sightings of mysterious objects in the sky have occurred throughout history. A 13th century historical book, Otia Imperialia, includes an account of a creature descending from a flying craft over Bristol, England. The log from Christopher Columbus' first voyage to America contains a report of strange lights in the sky. Medieval art pieces depict disc-shaped objects floating in the heavens. Sightings of flying cigar-shaped crafts were reported during the Black Plague. And there were even discussions of extraterrestrial life among America's Founding Fathers. Could these sightings, coming from every part of the world, from biblical times to present day, be evidence that aliens have been with us all along?

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If ancient aliens visited Earth, what was their mission, and is there evidence that points to when they will return? Ancient Sumerian tablets describe an alien race, known as the Anunnaki, who came to Earth to mine for gold. Egyptian hieroglyphs depict hybrid creatures that were part man, part animal. Mysterious crop circles and unexplainable crystal skulls are thought to contain messages that man has yet to decipher. Strange evidence may exist in multiple cultures throughout history suggesting that aliens came here to explore, excavate raw materials, experiment on human beings, and even for pure conquest.

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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 claim was given to them by a star god named Amma. The Hopi and Zuni people celebrate Kachinas, gods from the sky, whose headdresses and costumes appear to resemble modern helmets and protective clothing. Halfway around the world, Chinese legends tell of the Han leader, Huangdi, arriving on Earth on a flying, yellow dragon. Was this dragon more likely a spacecraft? Ancient astronaut theorists believe that these are far from chance encounters and that extraterrestrials not only interacted with us, but changed the course of human history.

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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 machinery? Indian Sanskrit texts, dating back to 6000 B.C., describe in varying but vivid detail flying machines called Vimanas. Megalithic stone structures in Egypt reveal evidence of precision saw work. Interpretations of the Jewish Zohar writings offer depictions of a life-sustaining manna machine, eerily similar to chlorella algae processing systems today. Are these examples of modern technology, or is there evidence that these incredible mechanisms existed on Earth thousands of years ago?

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  2. Ancient Aliens first started airing on Apr 20, 2010 and we have updated 36 out of 138 aired episodes and we will add more as they air.
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