Surfing on sunquakes

"Using an H-alpha filter tuned to the red glow of solar hydrogen, Sylvain Weiller of France made this [time-lapse] movie of sunspot 758 unleashing a C9-class flare on May 6th, 2005. A cloud [of solar particles] hurled into space by the lengthy explosion might have contributed to the auroral display [seen] below."


By way of Spaceweather