By Stephanie Pappas, Live Science Contributor | November 2, 2017 08:02am ET
A large void has been discovered inside the Great Pyramid of Giza, thanks to cosmic rays. If the large space turns out to exist, its function — which could be anything from new chamber to sealed-off construction passage — is likely to be the source of much archaeological debate.
An international group of researchers reported today (Nov. 2) in the journal Nature that by tracking the movements of particles called muons, they have found an empty space more than 98 feet (30 meters) long that sits right above the granite-walled Grand Gallery within the massive pyramid. The Great Pyramid, also known as Khufu's pyramid, was built during that pharaoh's reign between 2509 B.C. and 2483 B.C. No new rooms or passages have been confirmed inside the pyramid since the 1800s.
"The void is there," said Mehdi Tayoubi, the president of the organization Heritage Innovation Preservation and a leader of the ScanPyramids mission, an ongoing effort to bring new technology to bear on Egypt's most famous structures. [In Photos: Looking Inside the Great Pyramid of Giza]
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