Space Weather News for April 21, 2026
Free Space Weather Newsletter

ARCTIC AURORAS ARE TURNING BLUE: Blue auroras are so rare that even veteran aurora chasers with years of Arctic experience have seldom seen one. Yet
lately they're showing up in photos from Scandinavia. It's not a new kind of aurora. It's a quirk of geometry involving sunlight and ionized nitrogen.

Find out why now is the season for blue auroras on Spaceweather.com.


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