LZ Outer Detector (IMAGE) DOE/Lawrence Berkeley National Laboratory Caption Looking up into the LZ Outer Detector, used to veto radioactivity that can mimic a dark matter signal. Credit Matthew Kapust/Sanford Underground Research Facility Usage Restrictions N/A License Original 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.