Aliens did not visit Earth in the distant past. They didn't build the pyramids or rule ancient Greece from Mount Olympus or teach Mesoamericans how to plant corn. How do I know? Because they did ...

Could ancient humans really have built the pyramids without extraterrestrial help? Or do such questions reveal more about modern anxieties than the past itself?

Evidence of alien life or cosmic pyramid scheme? A documentary filmmaker sparked a discussion of advanced Martian ...

A strange formation spotted deep within a massive Martian canyon is once again fueling debate over whether something more ...

IMAGES of an unusual pyramid-shaped structure on Mars that look like those in Egypt have reignited wild theories about aliens living on the planet. All sorts of bizarre objects have been spotted ...

The Giza Pyramids are among the best documented construction projects of the ancient world, yet a stubborn slice of popular culture still credits them to visitors from another planet. I want to ...

A pyramid-shaped formation spotted on the surface of Mars has reignited speculation about whether an ancient civilisation ...