Contact: Philippe Escoubet
philippe.escoubet@esa.int
31-715-653-454
European Space Agency

Aurora Before and During a Substorm

Caption: The image to the left is the typical appearance of the aurora before a magnetic substorm. During a substorm, the single auroral ribbon may split into several ribbons (center) or even break into clusters that race north and south (right).

Credit: Jan Curtis

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