It’s been quite a while, but growing up in New Hampshire, I had the good fortune to watch the northern lights play across the sky a few times. One of the most memorable was an evening spent with friends above the tree-line in the Presidential Range of the White Mountains. Below us the clouds formed a blanket around the foothills of the peaks, lit dimly by a crescent moon, while above us the lights shimmered and flickered for hours. It was quite an experience.
The science associated with the northern lights is pretty interesting as well: charged particles from the sun spiraling down the earth’s magnetic field lines where they interact with the upper atmosphere to create the show. There are a number of references to it across the web, of course, and NASA offers some good background. Check out the Themis satellite space weather link.
If you’ve never been able to see the aurora (here in Arizona it’s just about impossible), then you should check out the video that an artist in Norway put together. It’s stunning, and does a very good job of showing what the northern lights really look like; much better than looking at pictures!
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Below is a screenshot of one frame of the video.
Ole Salomonsen / Arctic Light Photo