"Wireless Cosmic Ray Navigation System Enables Underground Movement Detection"

Scientists have developed a new kind of GPS called the muometric positioning system (muPS) that works underground, indoors, and underwater. The system uses cosmic ray muons to calculate an individual's position in a building's basement, where satellite global positioning systems don't work. Muons are subatomic particles created when cosmic rays from sources like distant supernovae or the Sun collide with particles in Earth's atmosphere, and they can penetrate deep underground. The muPS system has been wired, but the team has now taken the system wireless. The current accuracy of the muometric wireless navigation system (MuWNS) is between 2 meters and 25 meters, with a range of up to 100 meters, depending on the depth and speed of the person walking.