Did Aliens Leave Messages? | Ancient Aliens: The Ultimate Evidence (S9, E17)

Giorgio Tsoukalos decodes some of the most compelling evidence for Ancient Astronaut theory found in mysterious carvings, symbols, and structures that are strikingly similar on opposite ends of the Earth. See more in Season 9, Episode 17, "Alien Messages." The HISTORY® Channel, a division of A+E...

43 min - Space & the Universe - HISTORY

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