On every continent, there are stories of children who "stand out" for their strange abilities and advanced knowledge. They are said to have knowledge of things they shouldn't or couldn't know. See more in this marathon from Ancient Aliens. Watch all new episodes of Ancient Aliens, Fridays at ...

Legends of lost and mysterious islands, advanced civilizations and Eden-like paradises have been told by sailors throughout human history. Is it possible these stories are more than just the myths of imaginative seafarers? See more in Season 6, Episode 9, "Aliens and Forbidden Islands." Watch ...

For thousands of years, mankind has told tales of encounters with strange, soulless creatures. Are these beliefs merely man made fabrications--or could there be extraterrestrial origins in earthly encounters with the undead? See more in Season 2, Episode 9, "Aliens: Dead or Alive." Watch all ...

Are recent breakthroughs in medicine the result of years of research? Or does the knowledge of healing really come from an otherworldly source? See more in Season 6, Episode 6, "Alien Operations." Watch all new episodes of Ancient Aliens, Fridays at 9/8c, and stay up to date on all of your ...

One of the most compelling arguments for the Ancient Astronaut theory is the extraordinary engineering behind the construction of megalithic sites worldwide. See more in this scene from Season 1, Episode 1, "Extraordinary Engineering." Watch all new episodes of Ancient Aliens, Fridays at 9/8c, ...

Did we lose access to technologies of ancient civilizations? See more in this compilation from Ancient Aliens. Watch all new episodes of Ancient Aliens, Fridays at 9/8c, and stay up to date on all of your favorite shows on The HISTORY Channel website at http://history.com/schedule. ...

Si una nave extraterrestre se estrelló en Roswell y el Ejército lo quiso encubrir ¿Fueron capaces de ocultar todas las pruebas y restos de metal? Este Geólogo está convencido de no y de que ha encontrado un resto que olvidaron enterrado. Descubriremos la verdad que se esconde este pequeño trozo ...

Puma Punku in Bolivia features some of the largest stone blocks on Earth, each carved with incredible precision. See more in this scene from Season 20, Episode 20, "Resurrecting Puma Punku." Watch all new episodes of Ancient Aliens, Fridays at 9/8c, and stay up to date on all of your favorite ...

Many ancient cities are thought to be lost forever-if they ever existed at all. See more in this compilation from Ancient Aliens. Watch all new episodes of Ancient Aliens, Fridays at 9/8c, and stay up to date on all of your favorite shows on The HISTORY Channel website at ...

Dr. Travis Taylor examines some mysterious Chilean UFO footage, in this clip from Season 15, "Destination Chile." Watch all new episodes of Ancient Aliens, Fridays at 9/8c, and stay up to date on all of your favorite shows on The HISTORY Channel website at http://history.com/schedule. ...

Could these sightings, coming from every part of the world, from biblical times to present day, be evidence that aliens have been with us all along? See more in Season 1, Episode 4, "Closer Encounters." Watch all new episodes of Ancient Aliens, Fridays at 9/8c, and stay up to date on all of ...

Are extraterrestrials at the heart of the origins of life? See more in this compilation from Ancient Aliens. Watch all new episodes of Ancient Aliens, Fridays at 9/8c, and stay up to date on all of your favorite shows on The HISTORY Channel website at http://history.com/schedule. ...