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Experts take a deep dive into demonic theories. See more in this Ancient Aliens compilation. Watch all new episodes Fridays 9/8c; ... Check out these unexplainable pieces of technology. See more in this Ancient Aliens compilation. Watch full episodes and stay up ... This compilation examines claims that governments around the world have Check out these mysterious moon theories. See more in this Ancient Aliens compilation. Watch full episodes and stay up to date ... While in restricted waters, eyewitnesses spot an unidentified object performing unusual maneuvers, unlike any other military ...