"This constitutes the first major inner structure found in the Great Pyramid since the nineteenth century." They christened the chamber aptly the "big void", and it now represents a gap in our ...

TUCKED away in a corner of Antarctica lies a mysterious mountain peak that looks exactly like a man-made pyramid with four symmetrical sides. The snowy structure of the ice-locked continent has a ...

An curved arrow pointing right. The most mysterious structure on Ceres is a giant pyramid-shaped mound called Ahuna Mons. Scientists may now know what created it. Follow BI Video: On Twitter More ...

At 146.5 m (481 ft) high, the Great Pyramid stood as the tallest structure in the world for more than 4,000 years. Today it stands at 137 m (449.5 ft) high, having lost 9.5 m (31 ft) from the top.

The limestone on the pyramid’s outside has withstood erosion for centuries. It has kept the structure strong for millennia. Granite was chosen for the inner chambers for its strength.