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auroral oval. auroral oval. An oval-shaped region centered on the earth's magnetic pole in which auroral emissions occur.
The Aurora is an incredible light show caused by collisions between electrically charged particles released from the sun that enter the earthâs atmosphere and collide with gases such as oxygen and nitrogen. The lights are seen around the magnetic poles of the northern and southern hemispheres. Auroras that occur in the northern hemisphere are called âAurora Borealisâ or ânorthern lightsâ and auroras that occur in the southern hempishere are called âAurora Australisâ or âsouthern lightsâ.