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Iceland Northern Lights
Iceland

An aurora, sometimes referred to as a polar light or northern light, is a natural light display in the sky, predominantly seen in the high latitude (Arctic and Antarctic) regions. Auroras are produced when the magnetosphere is sufficiently disturbed by the solar wind that the trajectories of charged particles in both solar wind and magnetospheric plasma, mainly in the form of electrons and protons, precipitate them into the upper atmosphere (thermosphere/exosphere), where their energy is lost. The resulting ionization and excitation of atmospheric constituents emits light of varying colour and complexity. The form of the aurora, occurring within bands around both polar regions, is also dependent on the amount of acceleration imparted to the precipitating particles. Precipitating protons generally produce optical emissions as incident hydrogen atoms after gaining electrons from the atmosphere. Proton auroras are usually observed at lower latitudes.

https://en.wikipedia.org/wiki/Aurora

photo: Zeiss Batis 18mm
original size 25000x12500

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Copyright: Flavio Di Mattia
Type: Spherical
Resolution: 12000x6000
Taken: 31/12/2016
Uploaded: 14/01/2017
Updated: 20/01/2017
Zobrazení:

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Tags: lights; north; aurora; night; snow; stars; exterior; nature
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