Vermin from the Skies

Today's Astronomy Picture of the Day shows Comet PanSTARRS and...what's that? The Black Cloud? An Stapledonian Interstellar Entity? No, a Coronal Mass Ejection from our Sun, en route to our small rock. Expect green skies for Saint Paddy's Day, marching down from the poles if it hits (last estimate I saw was 70% chance).