One of the rarest events to happen on the Sun.

It's usually caused by a Super Sun Spot; far beyond any that may have been observed to date.

When the Magnetic Field Ruptures with one of these, a wave of energy is released across the surface of the Sun.

It can also result in a Mega-Coronal Mass Ejection or Ejections.

The Wave of Energy can be seen moving across the surface of the Sun at nearly the Speed of Light.

Jehocifer.