David Spergel, Princeton University (IMAGE) American Institute of Physics Caption David Spergel, Princeton University, is a winner of the 2015 Dannie Heineman Prize. Credit Spergel Usage Restrictions This image may be used only with appropriate caption and credit. 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.