http://apod.nasa.gov/apod/ap110328.html
http://vimeo.com/21294655
Time-Lapse Auroras Over Norway (Apr. 8 2011)
Above is posted a video which displays a time lapse of an aurora display in Kirkenes, Norway. An aurora is a natural light display in the sky, particularly in the polar regions, caused by the collision of charged particles directed by the Earth's magnetic field. They are usually observed at night and typically occur in the ionosphere. The chance of witnessing the aurora borealis increases with gained proximity to the North Magnetic Pole. Auroras seen near the magnetic pole may be high overhead, but from farther away, they tend to illuminate the northern horizon as a greenish glow or sometimes a faint red, sort of if like the Sun were rising from a different direction. The aurora borealis usually happens near the equinoxes. I thought that this video was really cool so I'd suggest checking it out if you haven't already. It was produced by Terje Sorgjerd over about a week's span.
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