Scientists found a mysterious void in the Great Pyramid of Giza thanks to particle physics

A void secreted away in the largest pyramid in Giza has been revealed thanks to some space-age technology. Scientists used cutting-edge imaging techniques to see how particles called muons behaved deep within the Great Pyramid, also known as Khufu’s Pyramid.  SEE ALSO: Magnificent images capture the ancient and modern wonders of 1800s Egypt The behavior of those particles — which are created by cosmic rays zipping around Earth's atmosphere — revealed the 30-meter-long void