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The Variable Sun

Its steady warmth and brightness are illusory; the sun's output of radiation and particles varies. Systematic observations are beginning to unveil the causes of these changes and their effects on the earth

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Scientific American Magazine Vol 262 Issue 2This article was originally published with the title “The Variable Sun” in Scientific American Magazine Vol. 262 No. 2 (), p. 34
doi:10.1038/scientificamerican0290-34