An X2.2-class solar flare was release on March 11, 2015.
NASA’s Solar Dynamics Observatory captured an image of a mid-level solar flare on March 11, 2015, seen as a bright flash of light on the left side of the sun. This image is a blend of two wavelengths of light — 171 and 131 Angstroms – typically colorized in gold and teal, respectively.