1024x768 Purple Northern Lights Wallpaper | Nor... -

: These colors form in the denser parts of the upper atmosphere, below 60 miles, where nitrogen is more abundant than oxygen.

Beyond science, the northern lights hold deep significance across various cultures: 1024x768 purple northern lights wallpaper | Nor...

The "magic" of a purple aurora is actually a chemical reaction in our atmosphere: : These colors form in the denser parts

: Unlike the common green aurora caused by oxygen, purple and blue hues are produced by ionized nitrogen . below 60 miles