Variations in sunspot activity affect the weather on Earth, but the underlying mechanisms are unknown. New measurements of the Sun's radius and luminosity may help pinpoint the source of the energy responsible.
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D. H. HATHAWAY/NASA
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Gough, D. Sizing up the Sun. Nature 410, 313–314 (2001). https://doi.org/10.1038/35066658
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DOI: https://doi.org/10.1038/35066658
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