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Muons unveiled new details about a void in Egypt’s Great Pyramid

admin by admin
March 3, 2023
in Science News


A nebulous void in Egypt’s Great Pyramid of Giza has been unveiled thanks to strange subatomic particles called muons.

Scientists first identified the void in 2016 using muons, heavy relatives of electrons that can penetrate through solid materials. Thought to be a corridor-shaped hole, the void was located near a chevron-shaped structure visible on the pyramid’s north face. Further muon measurements revealed new details of the void’s size and shape, scientists from the ScanPyramids team report March 2 in Nature Communications.

Scientists probed a void that lay just behind the north face of the Great Pyramid (illustrated). The void is located behind a chevron-shaped structure visible from the exterior (h). Possible locations of another void, discovered in 2017, are marked in red and green. Known chambers, such as the Queen’s Chamber (b), Grand Gallery (c) and King’s Chamber (d), are indicated.S. Procureur et al/Nature Communications 2023

The new muon measurements indicate that the void is a 9-meter-long corridor about 2 meters wide by 2 meters tall, close to the pyramid’s north face. ScanPyramids researchers made additional measurements with ground-penetrating radar and ultrasonic testing, they reported March 2 in NDT & E International. The detailed measurements allowed the scientists to use an endoscope to take images inside the chamber, the team announced. The images reveal a corridor with a vaulted ceiling, presumably one that was hasn’t been seen by humans since the pyramid was built more than 4,500 years ago. The corridor’s purpose is still unclear.

A narrow, empty passage within the Great Pyramid
Using an endoscope, scientists peered inside the long-hidden chamber within the Great Pyramid.The ScanPyramids Mission

Muons are created when high-energy particles from space called cosmic rays crash into the Earth’s atmosphere. Muons are partially absorbed as they rain down onto structures such as the pyramids. Using detectors placed inside the pyramid, scientists from ScanPyramids zeroed in on regions where more muons made it through, indicating they’d traversed less material, which let them map out the location of the void.

Scientists also recently used muons to probe an ancient Chinese wall (SN: 1/30/23), a nuclear reactor and various volcanoes (SN: 4/22/22).



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