Sender: Seropi
Revontulet - Aurora Borealis - Northern Lights
Revontulet is the Finnish word for Aurora, "foxfire". Seropi's card show the lovely differences in the colours of the Auroras. Apparently their colours differ according to altitudes.
From wikipedia "Green is the most common of all auroras. Behind it is pink, a mixture of light green and red, followed by pure red, yellow (a mixture of red and green), and lastly pure blue".
I wish to see this phenomenon with my own eyes!
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