(All photos clickable)
Last night I saw my first aurora (a.k.a. northern lights). Here, it loops around the Big Dipper. It started as a glow on the northern horizon, just above the trees, then developed into covering the whole northern sky. I've seen videos, and it always looks like it's shimmering, like a curtain waving around. I never knew if it really looks like that, or that was time lapse. Well, now I know: it really does shimmer and change shape as you're watching.
A couple more photos:
This was a small display, which has me wondering what the big ones are going to be like.