17 agosto 2014

The spectacular Northern Lights unfold over a fjord, in Skjervøy, Troms, Norway.

"Celestial Dance" The spectacular Northern Lights unfold over a fjord, in Skjervøy, Troms, Norway. The vibrant colors are produced at various altitudes by different atmospheric gases, with blue light emitted by nitrogen and green by oxygen. Red light can be produced by both gases, while purples, pinks and yellows occur where the various colors mix and intersect. - photo ©Claus Possberg

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