Ancient Aliens

Planes and ships go missing in the Bermuda Triangle; magnetic anomalies in Mexico's Zone of Silence; an ancient doorway carved in Peru's Puerta de Hayu Marka; Markawasi's plateau strange rock formations.

Analyzing whether aliens supplied the missing link that accelerated human evolution, advancing civilization.

The infamous tale of the long-lost city of Atlantis; ruins of recently discovered temples beneath Lake Titicaca in Peru; ancient Indian texts, known as Sangams, describe sunken cities where aliens and humans intermingled thousands of years ago.

A cave in Ecuador that may contain books with secrets of alien technology; an ancient underground city in Turkey; rumors of the U.S. military working alongside aliens in a secret base; recent archaeological discoveries in the Yucatán.

Ancient alien theorists speculate that Adolf Hitler's quest for world domination was aided and abetted by extraterrestrial technology; during World War II, there are reports that Germans built a craft with the help of blueprints from alien beings.

Investigating whether mankind's quest to unlock the secrets of technology came from our imaginations or from otherworldly beings.

Investigating whether angels might really be travelers visiting Earth from distant planets.

Evidence of ancient aliens found in mysterious structures throughout the world.

The story of the Great Flood; extraterrestrial battles that caused wide-scale destruction; reports of UFOs lurking in the shadows of recent natural disasters; The Book of Revelations and the Dead Sea Scrolls.

Joan of Arc's defeat of the English Army; a young boy from India learns advanced mathematical formulas; an American serviceman receives a message while touching an alien aircraft; the ancient astronaut theory.