From Popular Science, Feb. 3, 2023: Recently, researchers created a full 3D muon image of a nuclear reactor the size of a large building which provides a safer way of inspecting old reactors or checking on nuclear waste. Scientists can collect muons to paint images of objects as if they were X-rays. Fermilab’s Alan Bross and a team of researchers are working to use this same technology to image the inside of the Great Pyramid of Giza.