The Aurora borealis is seen mainly?

The Aurora Borealis (also known as the northern lights) is seen in the night time sky exclusively in the northern hemisphere. It is more prominently and frequently viewed at northern latitudes, but can be seen generally throughout the temperate regions north of the equator, especially during the equinoxes (near spring and fall).

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The Aurora Australis is the Southern Hemisphere's counterpart to the Aurora Borealis.