Asked by anonymous
What is the chemical cause of the greens and red colors of aurora borealis (the northern lights)?
Answers
Answered by
DrBob222
The colors come from ionized oxygen/nitrogen atoms returning to their ground state(s). You can read more about it here. Scroll down to "aurora mechanism."
http://en.wikipedia.org/wiki/Aurora_%28astronomy%29
http://en.wikipedia.org/wiki/Aurora_%28astronomy%29
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