Figure 2 (IMAGE) Chinese Academy of Sciences Headquarters Caption The China-Japan collaboration placed new water Cherenkov-type muon detectors under the existing air-shower array in 2014. Credit Image by Institute of High Energy Physics 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.