Solar Eruption (IMAGE) NASA/Goddard Space Flight Center Caption After a large sunspot rotated out of Earth's view on July 17, 2017, NASA instruments could still track its effects on the far side of the star. This imagery from NASA's Solar Terrestrial Relations Observatory on July 23, 2017, captures an eruption of solar material -- a coronal mass ejection -- from that same active region. Credit NASA's Goddard Space Flight Center/STEREO/Bill Thompson 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.