Colorful Light Pillars
			
		
		
			Credit & Copyright:  
Walter Tape 
(Alaska Fairbanks), 
Figure 8-1, 
Atmospheric Halos
		
		
			How can an aurora appear so near the ground?  Pictured above are not 
aurora but nearby 
light pillars, 
a local phenomenon that can appear as a distant one.  
In most places on Earth, a lucky viewer can see a 
Sun-pillar, a column of light 
appearing to extend up from the 
Sun caused by flat fluttering
ice-crystals reflecting sunlight from the upper atmosphere.  
Usually these 
ice crystals evaporate before reaching the ground.  
During freezing temperatures, however, 
flat fluttering ice crystals may form near the 
ground in a form of light snow, sometimes known as a 
crystal fog.  
These ice crystals may then reflect ground lights 
in columns not unlike a 
Sun-pillar.  
In the above picture, the colorful lights causing the 
light pillars surround a 
ice-skating rink in Fairbanks, 
Alaska.