This video clip is 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. This is the largest solar flare since December 5, 2006. The coronagraph images show the faint edge of a "halo" CME as it raced away from the Sun and began heading towards Earth. The video covers about 11 hours. The particle cloud produced by this event appears to be rather large and traveling towards Earth.