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Auroras are caused by the passage of electricity through the rare air of the upper regions.

Aurora Borealis

Auroras are caused by the passage of electricity through the rare air of the upper regions.

"The general appearance of the aurora is that of an arch of white light rising from the horizon, like the morning down, from which reddish streamers radiate upward, appearing and disappearing in rapid succession, in a series extending along the rim of the arch from one extremity to the other, often with an undulatory motion, the arch continually rising till the streamers sometimes reach the zenith." -Atkinson 1903

Aurora Borealis

"The general appearance of the aurora is that of an arch of white light rising from the horizon, like…