Today, the sun produced one of its strongest solar flares of the current solar cycle: an X5-class powerhouse. The explosion hurled a very fast coronal mass ejection (CME) toward Earth; this could scoop up one or two CMEs already in route, forming a potent "Cannibal CME." Its arrival today MIGHT cause auroral displays tonight and tomorrow in middle and, possibly, more southerly latitudes. To follow the story, visit http://spaceweather.com or keep up with possible auroral displays with such apps a