Explores the unsolved mysteries of how ancient peoples built the pyramids of Egypt and Teotihuacan and created the Nazca lines of Peru, examines the so-called "Starchild" skull which some believe to be the skull of a child with an alien father and human mother, and looks at cave and rock drawings around the world, addressing questions of whether the ancient humans could have have alien help.
Examines the impact of astronomy on culture, covering topics such as archaeoastronomy, mythology, the Copernican revolution, extraterrestrial life, the Newtonian revolution, and connections with religion.
