Examining Layers of the Sunshield (IMAGE) NASA/Goddard Space Flight Center Caption A test engineer at Northrop Grumman examines several layers of the Sunshield. Several membranes make up one layer of the Sunshield, which has five layers in total. Credit Northrop Grumman 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.