Ancient Aliens (2010)

Episode Overview

What if extraterrestrial beings once visited our planet? What was their purpose, and do clues exist indicating their possible return? Ancient Sumerian texts reference the Anunnaki, an alien civilization that arrived on Earth to extract gold. Egyptian carvings illustrate hybrid entities that combine human and animal traits. Enigmatic crop circles and unexplainable crystal skulls are believed to hold secrets still beyond our understanding. Various historical cultures may harbor evidence that suggests these visitors came to investigate, harvest resources, conduct experiments on humans, and even pursue domination.