NASA: The Best Observed X-class Flare (VIDEO) NASA/Goddard Space Flight Center This video is under embargo. Please login to access this video. To view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 video Caption Watch the movie to see the wealth of colorful NASA observations of an X-class flare on March 29 -- the most comprehensively observed flare, ever. Credit NASA/NSO/Goddard Space Flight Center 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.