Spiral aurora over Iceland

I wish we had these in the US. It must be insanely interesting to see something like this in person. Got the image at NASA's Astronomy Pic of the Day site.

"Unexpected" aurora over Norway

As a photographer was about to give up on a night of looking for auroras, this monstrous aurora suddenly filled the sky. It lasted only a few minutes. I can't imagine what it's like to see this in person. It must be a marvelous moment that you remember forever.

As usual, I found this at the APOD site. (That's NASA's Astronomy Picture of the Day site.) I recommend visiting there every day. You never know what you'll find.

(Click pic for larger version.)