Engineers Conduct Test on Webb (IMAGE) NASA/Goddard Space Flight Center Caption Engineers conduct a 'Center of Curvature' test on NASA's James Webb Space Telescope in the clean room at NASA's Goddard Space Flight Center, Greenbelt, Maryland. Credit Credits: NASA/Chris Gunn 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.