Geronimo Villanueva (IMAGE) NASA/Goddard Space Flight Center Caption This is Dr. Geronimo Villanueva, recipient of the 2015 Harold C. Urey prize. Credit Jose Aponte 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.