an area on the sun’s surface with a strong magnetic field. That field can stretch into space without being broken. The gas then has more space and therefore heat on the surface is reduced. Because of the lower temperature that area is observed as a dark spot. To imagine the stretching magnetic field let’s think of children blowing soap bubbles. If blown carefully, the bubble can be held at the ring for a while before releasing it. For the dark sun spots imagine a metal bar being formed into a sword. It is done when the metal is hot, having an orange glow. Once put into cold water it cools down and is darker.

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Sunspot

admin2017-06-28T13:49:28+00:00June 28th, 2017|Categories: Aurora terms|

an area on the sun’s surface with a strong magnetic field. That field can stretch [...]

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