Auroral Oval -From space the northern and
southern lights can be seen as an oval of light that is centered on the magnetic
north and south poles. This geometry arises from the shape of Earth's magnetic
field and the changes that occur during solar storms as they disturb Earth's field.
Aurora -The lights
often seen in the northern skies at night, which take the form of
green, red or bluish clouds or curtains of light. Northern people
have watched these in wonder for centuries. They are produced by
currents of charged particles from distant regions of the magnetic field.