James Pugsley’s site Astronomy North contains some amazing photos of the Aurora Borealis.
Yellowknife – Northwest Territories
This photo was taken in October of 2008 along the Ingraham Trail near Yellowknife using a Canon 5D, 400 ISO, Aper 2.8 for 13 seconds. The circular formation on the left indicates that a bombardment of particles is about to begin.
An Exceptionally Tall Curtain
An exceptionally tall curtain above an Ingraham Trail cabin. The tallest auroras are known to reach low-Earth orbit satellites 600km overhead. The bottom edge of this aurora is approximately 100 km above the surface.
A classic Yellowknife Performance
A classic Yellowknife performance, with all of the celestial characters. As the moon rises in the East, the magnetic field lights up over Yellowknife’s famous houseboats.
See more at Astronomy North – images | time-lapse photography videos – via Boing Boing.