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Where To Watch Ancient Aliens Season 21

  1. 1The Top Ten Extraordinary DiscoveriesFebruary 7, 2025 · 7.6
  2. 2The Top Ten Mysterious MonolithsFebruary 14, 2025 · 7.6
  3. 3The Top Ten UFO CrashesFebruary 21, 2025 · 7.8
  4. 4The Top Ten Unexplained TechnologiesFebruary 28, 2025 · 7.7
  5. 5The Top Ten Secret ProjectsMarch 7, 2025 · 7.8
  6. 6The Top Ten Mysterious MountainsMarch 14, 2025 · 7.7
  7. 7Mysteries of the AztecsMarch 21, 2025 · 8.3
  8. 8The Glowing Orb PhenomenonMarch 28, 2025 · 7.8
  9. 9The Legacy Of J. Allen HynekAugust 29, 2025 · 7.5
  10. 10The Volcano FactorSeptember 5, 2025 · 7.7
  11. 11The Birdman MysterySeptember 12, 2025 · 7.2
  12. 12The Abduction FilesSeptember 19, 2025 · 7.0
  13. 13The GiantsOctober 2, 2025 · 7.0
  14. 14Aliens In Our MidstOctober 9, 2025 · 7.0
  15. 15Britain's UFO FilesOctober 16, 2025 · 7.0
  16. 16Mysteries Of The Norse GodsOctober 23, 2025 · 7.6
  17. 17Secrets Of JapanNovember 6, 2025 · 7.6