These special compilation episodes of "Ancient Aliens" explore the controversial theory that extraterrestrials have visited Earth for millions of years.
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Episode: 1 Aliens and Human Evolution
Episode: 2 Aliens and Strange Creatures
Episode: 3 Aliens and Unexplained Engineering
Episode: 4 Aliens and Lost Civilizations
Episode: 5 Aliens and the United States
Episode: 6 Mysteries of the Outer Realms
Episode: 7 Alien Codes and Messages
Episode: 8 Energy Lines and Hot Spots
Episode: 9 Aliens and the Superhuman Mind
Episode: 10 Gone without a Trace
Episode: 11 Mission to Outer Space
Episode: 12 The Global Connection
Episode: 13 Strange Visitors