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