Tracks Recorded by the ProtoDUNE Detector (IMAGE) DOE/Fermi National Accelerator Laboratory Caption This image shows one of the first cosmic muon particle tracks recorded by the ProtoDUNE detector at CERN. Three wire planes, each of which is made up of thousands of individual wires, recorded the signal of the muon as it traveled approximately 3.8 meters through liquid argon in the detector, and the images together give scientists a three-dimensional picture of the particle's path. Credit Image: DUNE collaboration Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.