Animation of Solar Eclipse (IMAGE) NASA/Goddard Space Flight Center Caption During the total solar eclipse, the Moon will turn off the ionosphere's source of extreme ultraviolet radiation: The ionosphere will go from daytime conditions to nighttime conditions. Credit NASA's Goddard Space Flight Center/Katy Mersmann 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.