Aurora borealis over a cabin This coloured light display also called the northern lights is observed in the night sky at high latitudes It occurs when charged and highlyenergetic particles from the Sun the solar wind are drawn by Earths magnetic field to the northern and southern polar regions Hundreds of kilometres up they collide with the upper atmosphere causing the excitation of atoms and molecules which leads to the emission of light Oxygen atoms rather than molecules are the most abundant components of the atmosphere at these heights It is their excitation that results in green light Photographed in March near Yellowknife Northwestern Territories Canada
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Product ID: 22108625119A