IceCube Schematic (IMAGE) DOE/Lawrence Berkeley National Laboratory Caption The IceCube neutrino observatory is designed so that 5,160 optical sensors view a cubic kilometer of clear South Polar ice. Credit IceCube 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.