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Name: Doug A Foster
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Question:
Why does the temperature of the Sun cool off from the core to the surface and then get so hot again in the atmosphere?



Replies:
The first part is pretty simple. The sun's furnace is near the center. That is because the gravitational pressure there is so high that thermonu- clear burning takes place. The further one gets from the center then the cooler the solar material.

The second part is more complicated. There is a lot of funny stuff that occurs on the surface that involves very strong magnetic fields and a lot of stirring. The result is that occasional hot spots flare up and shoot "hot" material outward from the Sun.

J Lu



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