Watch Ancient Aliens Season 21 Online — All Episodes | Bobina

Ancient Aliens — Season 21 watch online

Ancient Aliens — Season 21
  • TV Series: Ancient Aliens
  • Premiere: February 7, 2025
  • Episodes: 17
  • Network: History

Ancient Aliens season 21: episode list with air dates — 17 episodes. Watch the season 21 trailer online, plot and cast.

On this page you can watch the official Ancient Aliens (season 21) trailer online for free, read the plot and see who stars in it.

All seasons

Season 15Season 210Season 316Season 410Season 512Season 611Season 78Season 89Season 912Season 1010Season 1115Season 1216Season 1315Season 1422Season 1512Season 1610Season 177Season 1820Season 1920Season 2020Season 2117Season 2215

Episodes — Season 21

  1. 1 Episode 1 «The Top Ten Extraordinary Discoveries» February 7, 2025
  2. 2 Episode 2 «The Top Ten Mysterious Monoliths» February 14, 2025
  3. 3 Episode 3 «The Top Ten UFO Crashes» February 21, 2025
  4. 4 Episode 4 «The Top Ten Unexplained Technologies» February 28, 2025
  5. 5 Episode 5 «The Top Ten Secret Projects» March 7, 2025
  6. 6 Episode 6 «The Top Ten Mysterious Mountains» March 14, 2025
  7. 7 Episode 7 «Mysteries of the Aztecs» March 21, 2025
  8. 8 Episode 8 «The Glowing Orb Phenomenon» March 28, 2025
  9. 9 Episode 9 «The Legacy Of J. Allen Hynek» August 29, 2025
  10. 10 Episode 10 «The Volcano Factor» September 5, 2025
  11. 11 Episode 11 «The Birdman Mystery» September 12, 2025
  12. 12 Episode 12 «The Abduction Files» September 19, 2025
  13. 13 Episode 13 «The Giants» October 2, 2025
  14. 14 Episode 14 «Aliens In Our Midst» October 9, 2025
  15. 15 Episode 15 «Britain's UFO Files» October 16, 2025
  16. 16 Episode 16 «Mysteries Of The Norse Gods» October 23, 2025
  17. 17 Episode 17 «Secrets Of Japan» November 6, 2025