Active Sun (image) University of Hawaii at Manoa Share Print E-Mail Caption An image of active regions on the Sun from NASA's Solar Dynamics Observatory. The glowing hot gas traces out the twists and loops of the Sun's magnetic field lines. Credit NASA Solar Dynamics Observatory/ AIA Usage Restrictions Image may only be used with appropriate caption and credit information. Share Print E-Mail 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.