Coronal loops on the Sun (IMAGE) NASA/Goddard Space Flight Center Caption Coronal loops on the Sun are captured in ultraviolet light using the 171 ångström channel of the Atmospheric Imaging Assembly (AIA) instrument on NASA’s Solar Dynamics Observatory. Credit NASA/SDO Usage Restrictions No restrictions. License Public Domain 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.