Ancient Aliens: TOP UFO MYSTERIES OF 2025 | Part 1

Dive into this year’s most-watched Ancient Aliens moments. These fan-favorite segments rose to the top in 2025, showcasing the theories, discoveries, and unexplained mysteries viewers couldn’t stop revisiting. "Ancient Aliens" explores the controversial theory that extraterrestrials have visited Earth for millions of years. The HISTORY® Channel, a division of A+E Global Media, is the premier destination for historical storytelling.

Courtesy of HISTORY on YouTube. Watch on YouTube ↗

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