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An army airfare major finds strange markings at a UFO crash site in Season 21, Episode 3.
Ancient astronaut theorists link Egyptian myths to a 13th-century text about gods from another world.
A massive underground city in Turkey, capable of housing hundreds, reveals significant insights into ancient civilizations and their architectural achievements.
This mysterious mountain in Sri Lanka is a noted UFO hotspot featured in Season 21, Episode 6.
UFO sightings surge globally after World War II, raising fears of alien invasion.
Iceland's 2010 volcano eruption sparks sightings of a strange object in the ash plume.
The Great Pyramid of Giza, built for Pharaoh Khufu around 2580-2560 BC, is examined for its construction techniques and cultural significance in ancient Egypt.
This episode reveals the mysteries behind how Stonehenge was built in England.
A Marine officer reviews infrared footage of a jellyfish-shaped UFO in Iraq from 2018.
An island off Chile features mysterious monolithic structures with secret powers.
Countries worldwide report strange UFO sightings on major mountains in this episode.
A girl recalls a chilling encounter with an alien being in 1960s Brooklyn.
A shepherd in Turkey finds a strange stone structure in Season 21, Episode 1 of Ancient Aliens.
In Season 21, Episode 4 of Ancient Aliens, two giant bones and a mysterious metal object challenge conventional timelines of ancient technology.
A military intelligence officer reveals a secret UFO investigation taskforce in this episode.
In 1964, residents of a small English town report strange sounds and UFO sightings, leading to widespread fear and confusion within the community.
A UFO article in The Village Voice triggers sightings and questions in New York City.
Government officials investigate a mysterious UFO crash in Season 21, Episode 3.
In 1914 New York, giant skeletons raise questions about humanity's mysterious past in this episode.
A photographer captures a diamond-shaped craft over St. Louis during lockdown.
