Coronal Mass Ejection (IMAGE) University of Colorado at Boulder Caption Coronal mass ejections from the sun heat Earth's upper atmosphere, then cool it dramatically, according to a new University of Colorado Boulder study. Credit NASA 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.