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

Beneath a colonial-era church in the Mexican state of Puebla sits a structure that dwarfs the Great Pyramid of Giza by nearly double its volume. The Great Pyramid of Cholula holds the record as the ...

IMAGES of an unusual pyramid-shaped structure on Mars that look like those in Egypt have reignited wild theories about aliens ...

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

NASA photos appear to show a pyramid-like structure the same size as Giza on Mars, prompting speculation about whether an ...

A Catalan scientist claims the pyramids could be 12,000 years old. Here’s what the study says and why experts remain ...

Scientists have long thought there are a series of pyramid-like structures on Mars, with recent images showing one that could ...

Add Yahoo as a preferred source to see more of our stories on Google. Recent scans of the Pyramid of Menkaure on the Giza Plateau have revealed something remarkable: two previously unknown cavities.

Lucina Melesio explores how physicists are mapping the internal structures of ancient pyramids in Mexico and Central America using muons – potentially revealing hidden chambers that could finally lead ...