Your article says that sunspots are 3,500°C. Yet further in the article, it says that the solar flare of Nov. 4, 2003, was 41 million°C. Is that a typographical error?
Bruce Barnbaum Granite Falls, Wash.
That’s no typo. The release of magnetic energy in the sun’s atmosphere during a flare heats the material that’s been ejected
.—S. Perkins
From the Nature Index
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