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Ancient Aliens S21E1 — The Top Ten Extraordinary Discoveries

7.1

Ancient Aliens•Season 21•Episode 1

The Top Ten Extraordinary Discoveries

7.1/10 · 38 votesFeb 7, 202542 min

Ranked #15 of 17 in Season 21•−0.7 vs season avg

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

Previous seasonSeason 20 Next episodeE2 · The Top Ten Mysterious Monoliths

Seasons22

All 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22

Season 21 Episodes17

The Top Ten Extraordinary Discoveries still

E1 7.1Now viewing

The Top Ten Extraordinary Discoveries

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The Top Ten Mysterious Monoliths

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The Top Ten UFO Crashes

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The Top Ten Unexplained Technologies

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The Top Ten Secret Projects

The Top Ten Mysterious Mountains still

The Top Ten Mysterious Mountains

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Mysteries of the Aztecs

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The Legacy of J. Allen Hynek

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The Volcano Factor

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The Abduction Files

The Giants still

The Giants

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Aliens in Our Midst

Britain's UFO Files still

Britain's UFO Files

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Mysteries of the Norse Gods

Secrets of Japan still

Secrets of Japan

Cast16

Robert Clotworthy

Robert Clotworthy

Narrator (voice)

Giorgio A. Tsoukalos

Giorgio A. Tsoukalos

Self

Ariel Bar Tzadok

Ariel Bar Tzadok

Self

Jonathan Young

Jonathan Young

Self

David Childress

David Childress

Self

Erich von Däniken

Erich von Däniken

Self

Linda Moulton Howe

Linda Moulton Howe

Self

David Wilcock

David Wilcock

Self

George Noory

George Noory

Self

Philip Coppens

Philip Coppens

Self

Nick Pope

Nick Pope

Self

Mike Bara

Mike Bara

Self

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Episode Summary

"The Top Ten Extraordinary Discoveries" is episode 1 of Ancient Aliens season 21. It scored 7.1/10 from 38 votes, ranking #15 of 17 episodes this season (season average 7.8). It aired on February 7, 2025.

Next: E2 · The Top Ten Mysterious Monoliths Best of Season 21