What are there different colors of the Aurora Borealis?

In different parts of Alaska, in winter, the Northern Lights, or Aurora Borealis are different colors. Does anyone know the colors and why?|||Blue, Purple, and Pink are the three main colors, although green turns up often too.|||there are three different types of Aurora Borealis|||Different energy levels of particles shot out by the sun (solar wind) ionize the air molecules to different degrees-- that is what causes the colors we see. A higher 'voltage' might make the air light up a completely different color than a lower one.|||The aurora is a glow observed in the night sky. In northern latitudes, it is known as "aurora borealis" which is named after the Roman goddess of the dawn, Aurora and the greek name for north wind, Boreas


The composition and density of the atmosphere and the altitude of the aurora determine the possible light emissions.


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