Ancient Aliens is counting down the top ten alien petroglyphs around the world, from strange, human-like figures to flying craft and carvings of what appear to be astronauts. Could these mysterious carvings provide a record of extraterrestrial visitation?

See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.

In the 21st century, UFOs have gone from fringe science to mainstream obsession. A new generation of UFO hunters is employing incredible technology, and Unidentified Flying Objects are being openly investigated by the government. Are we closer than ever to understanding the strange events happening in our skies?

See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.

In the early 1900s, a modern-day prophet from the hills of Kentucky became a worldwide sensation: Edgar Cayce. He claimed to receive visions of both the past and the future while in a trance, he healed the sick, and alleged to have encounters with otherworldly beings. Could it be that Edgar Cayce was a vessel used to carry out an alien agenda?

See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.

Around the world and throughout history, people have reported seeing very similar types of unidentified objects in the sky. Now, Ancient Aliens is counting down the top ten alien craft, from V-shaped objects to orbs of light to flying saucers. Could the ubiquity of these sightings provide evidence of extraterrestrial visitation?

See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.

Enormous, megalithic structures of mysterious origins. A vast underground complex containing the remains of what some believe to be otherworldly beings. Could the ancient mysteries that exist on the Mediterranean islands of Malta be connected to local legends of alien visitation–and giant hybrid beings?

See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.

Terrifying encounters at 40,000 feet. Pilot accounts of UFOs taking control of their aircraft. Entire jumbo jets disappearing into thin air. Since the dawn of aviation, pilots have experienced unexplainable events in the sky. Could they have witnessed aliens in our airspace?

See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.

The vast Alaskan wilderness is well known for mysterious disappearances, electromagnetic anomalies, stories of strange creatures, and is a hotspot for UFO sightings. Could Alaska’s many mysteries be due to a presence that is not of this world?

See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.

Ancient Aliens is counting down the world’s top ten mysterious islands, including sites said to be home to giants, remote landmasses that are home to massive megalithic structures, and even islands that disappear into thin air. Could these incredible sites provide evidence of extraterrestrial visitation?

See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.