Auroras are most brilliant during periods of increased solar activity.

Question

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During periods of increased solar activity, more charged particles are emitted from the Sun and interact with the Earth's magnetic field, resulting in more frequent and intense auroras. Auroras are caused by charged particles from the sun colliding with Earth's magnetic field. During periods of increased solar activity, there are more charged particles reaching Earth, therefore resulting in more frequent and brighter auroras.

Auroras Are Most Brilliant During Periods of Increased Solar Activity