According to some Ancient Astronaut theorists, entities that have been described as ghosts, angels and extraterrestrials are actually visitors from unseen realms and they walk on Earth.

Ancient Aliens Season 12 Episodes...

• s12e01 - Return to Antarctica
• s12e02 - The Badlands Guardian
• s12e03 - Element 115
• s12e04 - The Star Gods of Sirius
• s12e05 - They Came from the Sea
• s12e06 - Secrets of the Maya
• s12e07 - The Druid Connection
• s12e08 - The Reptilian Agenda
• s12e09 - The Alien Infection
• s12e10 - Project Hybrid
• s12e11 - The Trans-Dimensionals
• s12e12 - Islands of Fire
• s12e13 - The Constellation Code
• s12e14 - The Nuclear Agenda
• s12e15 - The Alien Mountain
• s12e16 - The Alien Brain
• s12e17 - The Secrets of Stonehenge
• s12e18 - Food of the Gods
• s12e19 - Human Hieroglyphs
• s12e20 - The Storming of Area 51
• s12e21 - Countdown to Disclosure
• s12e22 - Secrets of the Exoplanets

Ancient Aliens Show Summary

Presented in the 1968 bestselling book Chariots of the Gods by Erich von Daniken, the theory of "ancient aliens" rocked people's beliefs in mankind's progress. Ancient cave drawings of strange creatures, remains of landing strips in Peru, and Indian texts that describe the "flying machines of the gods" were just a few of the odd archaeological artefacts cited by von Daniken as proof that ancient astronauts were well known to our ancestors. Produced with the exclusive cooperation of von Daniken himself, Ancient Aliens launches all-new expeditions to seek out and evaluate this evidence, with a concentration on the latest discoveries of the last 30 years, including unusual DNA findings on man's evolution and newly decoded artefacts from Egypt to Syria to South America. It is a balanced investigation into a theory some believe cannot be true, but many agree cannot be ignored.

** Please Note: the schedule for Ancient Aliens is a 'best fit'. The official order has changed multiple times, and no one source agrees with another **