X-CLASS SOLAR FLARE: An unusually-magnetized sunspot exploded on May 10th, producing an intense X1.5-class solar flare. Shortwave radio signals were blacked out around the Atlantic Ocean for as much as an hour, and now there’s a chance a CME is heading our way. Updates @ Spaceweather.com.

 
Above: The extreme ultraviolet flash from today’s X-class solar flare. Credit: NASA’s Solar Dynamics Observatory