LUX Photodetector (IMAGE) Brown University Caption The LUX dark matter detector is surrounded by light sensors that can detect the emission of just a single photon. Those sensors are designed to capture the tiny flash of light emitted if a dark matter particle were to interact with the detector's xenon target material. Credit Matt Kapust/ Sanford Underground Research Facility 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.