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Are There Sunspots That Are Darker and Cooler?
š” The Answer
- Yes, sunspots appear dark because they are about 3,500 Kelvin cooler than the surrounding 5,500 Kelvin surface.
- They are temporary phenomena caused by intense magnetic fields that inhibit convection.
- Sunspots follow an 11-year cycle, with a minimum and maximum in activity.
- Large sunspot groups can be visible from Earth without a telescope during sunset.
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