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Aurora Borealis, Sun sparks that illuminate the Earth’s atmosphere. The Aurora borealis is a physical phenomenon caused by the impact of elementary particles, mostly electrons, the atoms that are located in the outer layers of Earth‘s atmosphere.

Due to the impact, the atoms are excited and emit light of different color. Auroras have a wide variety of features and appear in both polar regions in the northern hemisphere and in the southern hemisphere, so it is more correct to call them polar auroras. Colored drapes that surge as driven by the wind, milky spots, arcs of light and radiant crowns buttons, tongues of fire: the northern lights are very frequent phenomena of light in the polar areas, where they manifest themselves with a wide variety of shapes and colors. That is why in ancient times were considered prodigies of divine nature. Because since ancient times, the phenomenon has been reported and described by the peoples of the northern hemisphere and the northern hemisphere, for a long time it was thought that it was exclusive to this part of the world and has been renamed the Northern Lights. Today we do know that it also occurs in the southern hemisphere and is, therefore, more appropriate to use the generic term of polar auroras. The origin of the many faces of the polar aurora is the same physical phenomenon: the impact of swarms of elementary particles of solar origin with higher layers of Earth’s atmosphere. From a physical point of view, the phenomenon of the polar aurora is completely analogous to that which occurs within the common neon lamps, where discharges excite electrons of the atoms of the rare gas and make it luminescent. Unlike a filament lamp that shines for incandescent, reaching temperatures of thousands of degrees, that of neon is also called cold light, because the luminescence is at low temperatures occurs.



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Aurora Borealis, Sun sparks that illuminate the Earth.