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Subatomic particles paint pictures of inner worlds of pyramids, volcanoes and more illustration of muon particles raining down on the Great Pyramid of Giza - An invisible rain of the subatomic particles called muons pierces structures on Earth’s surface, including the Great Pyramid of Giza. Those muons can help map out the chambers within the pyramid and have even revealed an unexplained hidden void. Inside Egypt’s Great Pyramid of Giza lies a mysterious cavity, its void unseen by any living human, its surface untouched by modern hands. But luckily, scientists are no longer limited by human senses. To feel out...

The device enters rooms and chambers through a 3.5 centimetre hole drilled through a wall by researchers outside. It is made up of two robots, a tubular machine equipped with a high definition camera and a probe that explores the structure via a small, inflatable blimp. After the first robot has taken a series of reconnaissance images, the drone is pushed through the drilled hole before inflating itself within the chamber. Packed with an array of sensors and cameras, the remote-controlled device collects data and takes photos or video without causing damage to the fragile building. After it has completed...