Animation of Moon's Shadow Moving Across Earth (image) NASA/Goddard Space Flight Center Share Print E-Mail Caption NASA's Earth Polychromatic Imaging Camera (EPIC) tracked the path of the total solar eclipse across North America on Aug. 21, 2017. NASA scientists will use these observations to better understand how clouds affect Earth's energy balance. Credit NASA Goddard/DSCOVR/EPIC Usage Restrictions None 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.