Sunspots are areas where the magnetic field is about 2, times stronger than Earth's, much higher than anywhere else on the Sun. Because of the strong magnetic field, the magnetic pressure increases while the surrounding atmospheric pressure decreases. This in turn lowers the temperature relative to its surroundings because the concentrated.
· Sunspots are areas that appear dark on the surface of the Sun. They appear dark because they are cooler than other parts of the Sun’s surface. Solar flares are a sudden explosion of energy caused by tangling, crossing or reorganizing of magnetic field lines near sunspots. The surface of the Sun is a very busy place.
Sunspots can change continuously and may last for only a few hours to days; or even months for the more intense groups. The total number of sunspots has long been known to vary with an approximately year repetition known as the solar cycle. The peak of sunspot activity is known as solar maximum and the lull is known as solar minimum.
· World Data Center for the Sunspot Index. The Solar Cycle (Solar Cycle Science).
2 days ago · World Data Center for the Sunspot Index. The Solar Cycle (Solar Cycle Science).
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