Ancient Aliens

Ancient cultures around the world tell stories of strange objects witnessed in the sky. But are these tales fiction, or might people have actually seen alien craft descending from the heavens?

Reverence for the number three dates back thousands of years, and can still be found in art, architecture, science and religion. What is it about this number that continues to fascinate us? Could the power of three connect humanity with extraterrestrials?

The Crystal Skulls are some of the most controversial of ancient artifacts. Are they part of an elaborate hoax? Or do they possess a great, perhaps even otherworldly power?

From Florida to Peru, all over the world there are megalithic stone structures whose construction baffles stonecutters, scientists and archeologists. Could ancient extraterrestrials be behind them?

A 2,000-year-old computer...a power plant inside the Great Pyramid...and a Nazi-era time machine. Could these devices be evidence man may have had access to extraterrestrial technology?

Ancient Sumerians developed astounding advances in writing, mathematics, medicine, astronomy and more. They credited these achievements to the Anunnaki-giant, winged gods, who are only found in ancient texts. Could these gods be more than legend?

Legends from around the world speak of sacred entryways to the land of the gods.

Throughout history, there are stories of encounters with strange beings. Could our ancestors' descriptions of heavenly visitors be evidence of contact with extraterrestrials?

Strange rock carvings from 8,000 B.C. Unexplained sightings in the new world.

On every continent, there are stories of children who "stand out" for their strange abilities and advanced knowledge.

Are recent breakthroughs in medicine the result of years of research? Or does the knowledge of healing really come from an otherworldly source?

Ancient emperors, kings and pharaohs were often attributed with otherworldly strength and ability. Is it possible that these rulers were connected with divine or even extraterrestrial forces?

Sealed vaults possessing a strange and deadly curse, mysterious relics believed to be under otherworldly protection.

Demonic seduction... hybrid offspring... and strange abductions.

Throughout human history, the planet Mars has captured our imagination. Ancient Egyptian astronomers were the first to record the red planet on a chart of the cosmos.

All around the world, archaeologists have uncovered mysterious relics revered by ancient cultures for thousands of years. Could these relics provide us with the ability to access otherworldly power?

Legends of lost and mysterious islands, advanced civilizations and Eden-like paradises have been told by sailors throughout human history.

Throughout history, spiritual leaders known as shamans have healed, protected and advised their people.

Earth is home to 10 quintillion insects. In cultures throughout the world, insects have been honored, feared and even revered as gods.

The Ark of the Covenant is one of the most sought after religious relics of all times and far more than just a box that contained the Ten Commandments.

Across ancient civilizations, the world's mountains were viewed as the sacred home to all-powerful gods.

Throughout the ancient world, magic was used for everything from healing to communicating with the gods. But was it real? And do ancient accounts of magic suggest evidence of otherworldly knowledge?

Satan is considered the embodiment of evil. Yet new interpretations of ancient texts indicate that Satan may have been an extraterrestrial who was more of an ally to humanity than an enemy.

The Reptilian alien is a fixture of science-fiction. But could ancient texts and myths about reptilian creatures provide evidence that they are more than just a pop-culture creation?

Nikola Tesla shepherded mankind to a new industrial era and laid the groundwork for today's technological age-but could that have been by some otherworldly design?