Ah, yes, the ol' Aurora Borealis. We've got a similar one down here in the arse-end of the world; it's called the Aurora Australis which, much like it's northern counterpart, has a cool sounding name, though it's let down a little by sharing part of said name with Britain's most popular jail. If you ever get a chance to visit the frigid southlands, where the snow aliens live, then I'd advise any visitors to keep an eye on the sky, in the moments between the usual far-southern pastimes of freezing your testicles off and going snow-blind.