DNA-cloud
Taken by Nerush Vladimir on June 30, 2019 @
Nizhny Novgorod Oblast, Russia
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Details:
Unusual cloud having a shape of double spiral was observed at the last day of the June. It seems to be associated with Kelvin–Helmholtz instability, but I don't know, why it has been twisted in spiral like a DNA molecule.
Photographer's website:
http://www.wild-nature.ru/users/vlann
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