Sunspots
Remember that sunspots are huge magnetic storms on the sun that show up as cooler (darker) on the sun’s surface. During periods of maximum sunspots, the sun emits more energy than during minimum periods. Sunspots occur in cycles with a maximum in numbers and size every 11 years. The sun’s magnetic field varies with sunspot activity reverses every 11 years, meaning it takes 22 years to return to its ‘original’ state.
