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Aurora Borealis

Because of the dancing polar lights on the nightly sky people in bygone days made several speculations. Today we know that polar lights are evoced by particle radiation, called solar wind, consisting mostly of electrons and protons.


Nordlicht / Aurora Borealis
(RM) image no. 143955
Nordlichter, Finnland
Nordlicht / Aurora Borealis
(RM) image no. 143953
Nordlichter, Finnland
Nordlicht / Aurora Borealis
(RM) image no. 143949
Nordlichter, Finnland
Nordlicht / Aurora Borealis
(RM) image no. 143946
Nordlichter, Finnland