Ancient Aliens · SEASON 21

The Top Ten Extraordinary Discoveries

Episode 1 · 2025-02-07

★ 8.0
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Season 21Episode 1★ 8.0/10
  • Documentary
  • Mystery
  • Sci-Fi & Fantasy

Episode overview

Ancient Aliens is counting down ten of history's most astonishing discoveries; breakthroughs that challenge traditional beliefs about human history. From a lost city hidden in the Andes, to mysterious metal spheres that are not of this world and a sunken city that was said to be the home of the gods. Could these discoveries provide proof of extraterrestrial contact?

42 minutes

Season 21 episodes

1. The Top Ten Extraordinary Discoveries2025-02-07 2. The Top Ten Mysterious Monoliths2025-02-14 3. The Top Ten UFO Crashes2025-02-21 4. The Top Ten Unexplained Technologies2025-02-28 5. The Top Ten Secret Projects2025-03-07 6. The Top Ten Mysterious Mountains2025-03-14 7. Mysteries of the Aztecs2025-03-21 8. The Glowing Orb Phenomenon2025-03-28 9. The Legacy of J. Allen Hynek2025-08-29 10. The Volcano Factor2025-09-05 11. The Birdman Mystery2025-09-12 12. The Abduction Files2025-09-19 13. The Giants2025-10-02 14. Aliens in Our Midst2025-10-09 15. Britain's UFO Files2025-10-16 16. Mysteries of the Norse Gods2025-10-23 17. Secrets of Japan2025-11-06