The so-called Candor Tetrahedron. (NASA/JPL-Caltech/UArizona) It would be tempting to assume there's nothing much of note ...

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 ...

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

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

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

The Great Pyramid rarely rewards a simple answer. A newly characterized corridor behind its northern chevron has done the opposite of closing a mystery: it has sharpened a much larger engineering ...

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 ...