Aurora
Now and then the sun ejects some of its matter into space. Such an event is known as a Coronal Mass Ejection (CME). If Earth happens to be in the way, the particles interact with our atmosphere and create a light show known as an aurora. These auroras are more common near the Earth's poles but are occasionally seen at much lower latitudes.
Aurora 11-07-04 Using Nikon (1 of 8) 
Aurora 11-07-04 Using Nikon (2 of 8) 
Aurora 11-07-04 Using Nikon (3 of 8) 
Aurora 11-07-04 Using Nikon (4 of 8) 
Aurora 11-07-04 Using Nikon (5 of 8) 
Aurora 11-07-04 Using Nikon (6 of 8) 
Aurora 11-07-04 Using Nikon (7 of 8) 
Aurora 11-07-04 Using Nikon (8 of 8) 
Aurora 11-09-04 Using Nikon (1 of 5) 
Aurora 11-09-04 Using Nikon (2 of 5) 
Aurora 11-09-04 Using Nikon (3 of 5) 
Aurora 11-09-04 Using Nikon (4 of 5) 
Aurora 11-09-04 Using Nikon (5 of 5)
I haven't seen a display like the one in '04 here in lower Michigan since the late '70s. Another great but very short display occurred on 10-24-11, but my Nikon batteries were dead. However, I did manage to capture it using my SkyCam, but they are in black and white. See the SkyCam page for those images.