DARPA MuS2 developing Muon Source to detect shielded nuclear contraband, to objects deeply buried up to thousands of meters below the earth’s surface

Muons are subatomic particles that behave a lot like electrons but are around 200 times heavier. As the US Department of Energy explains, “Muons created in the atmosphere constantly hit every inch of the Earth’s surface and pass through almost any substance.”   Many scientists have noted that measuring the passage of muons offers the…