Microshutters Under a Microscope (IMAGE) NASA/Goddard Space Flight Center Caption This photograph shows microshutters being examined with a microscope. A hair is visible in the picture for size comparison. Credit 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.