From CWOPS list (posted by Mike, W0YR):
Yesterday, there was a huge eruption on the back side of the sun. Spaceweather.com estimates that the mass coronal ejection was of a magnitude of at least a billion tons. The attached movie shows the magnitude of this occurance. Notice, this is not an animation. It is a time-lapse video of the real thing. The sun's rotation will soon bring the region where the explosion occurred around towards Earth.