Physicists Stage COUPP (IMAGE) University of Chicago Caption Juan Collar, associate professor in physics, participates in two dark-matter experiments, including COUPP, which is supported by the US Department of Energy and the National Science Foundation. Here he works in the sub-basement of the Laboratory for Astrophysics and Space Research on the UChicago campus. Credit Juan Collar Usage Restrictions News organizations may use this image in reports about the work of Juan Collar and his colleagues. 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.