Ancient Aliens: Secret UFO Encounters on U.S. Soil

Many sights of otherworldly figures have been reported in America. See more in this compilation from Ancient Aliens. Find out more about the show and watch full episodes on our site: "Ancient Aliens" explores the controversial theory that extraterrestrials have visited Earth for millions of years....

19 min - Space & the Universe - HISTORY

More: Searching for Aliens documentaries

Read Deeper: Searching for Aliens

1. The Eerie Silence by Paul Davies - View on Amazon
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3. Rare Earth by Peter Douglas Ward - View on Amazon
4. The Smallest Lights in the Universe by Sara Seager - View on Amazon
5. Strange New Worlds by Ray Jayawardhana - View on Amazon

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