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391 points sva_ | 1 comments | | HN request time: 0s | source
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groos ◴[] No.45902945[source]
This aurora looks predominantly red. The last big one had pinks and greens easily visible to the naked eye. I wonder what causes the difference.
replies(1): >>45902984 #
1. keehun ◴[] No.45902984[source]
Has all to do with solar flare energy levels and how/where it interacts in the atmosphere. [1][2]

[1]: https://www.space.com/aurora-colors-explained

[2]: https://www.nps.gov/articles/-articles-aps-v8-i1-c9.htm