Among the most persistent claims is that extraterrestrials assisted in the construction of ancient civilizations.

Claims that the pyramids were built with alien technology or lost advanced knowledge conflict with archaeological evidence. Construction methods, tool marks, worker settlements, and historical records ...

A baffling triangular formation deep in the Nevada desert is igniting theories that it could be the handiwork of a forgotten ...

From waterfalls that seem to disappear into nowhere to blood-colored water, these places are shrouded in mystery-even if science can explain most of them.

President Donald Trump is determined to answer a question that has tormented humanity for centuries: do aliens exist?

Erich von Däniken, the Swiss author whose bestselling theories on the extraterrestrial origins of ancient civilisations brought him widespread fame among paranormal enthusiasts and considerable scorn ...

These destinations offer more than just a photo opportunity; they provide a glimpse into the eccentric minds of creators and ...

Harvard astrophysicist Avi Loeb claims humanity missed a historic chance to find alien life on interstellar object 3I/ATLAS, warning it may have been a spacecraft on a seeding mission.

A man has claimed the Egyptians did not build the Great Pyramid of Giza, and instead thinks a secret 'supercivilisation' did ...

President Trump had lashed out at former President Barack Obama earlier Thursday for telling a podcaster that aliens were ...