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Πέμπτη 18 Ιουλίου 2024

Astronomy Picture of the Day: polar stratospheric clouds over Iceland.

 


"No, it's not a painting and it wasn't photoshopped either. These are polar stratospheric clouds over Iceland.”

Polar stratospheric ice clouds (naked clouds) form at temperatures below the ice sublimation point, usually around −85 °C, a temperature lower than the average temperature of the lower stratosphere.

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