2011 Valentines Day X-Class Flare

The video clip of the large X2 flare seen by Solar Dynamics Observatory (SDO) in extreme ultraviolet light on February 15, 2011, has been enlarged and superimposed on a video of SOHO's C2 coronagraph for the same period. credit: NASA

Red Nova | February 17, 2011

Tags:. .sdo. .observatory. .enlarged. .superimposed. .soho