This first video has Don talking about the airglow and the horizon of the Earth. He also gets to catch the slow movement of the Aurora phenomenon in action at about the 1:30 mark.
In this second video you'll get to see a sequence of still images animating the movement of the Aurora Borealis.
You may also be interested in checking out these articles previously posted on Neatorama!
Northern Lights in Alaska - Link
The Southern Lights - Link