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How can 400-year-old sunspot drawings help modern-day scientists with solar cycles? This is what a recent study published in The Astrophysical Journal Letters hopes to address as an international team ...

When you buy through links on our articles, Future and its syndication partners may earn a commission. (Main) The sun which has an 11-year solar cycle (top right) Helioseismic and Magnetic Imager (HMI ...

Aurora records in royal chronicles from Korea show that during the 'Maunder Minimum' between 1645 and 1715, the sun's solar cycles became several years shorter than they are today. When you purchase ...

"Half-forgotten" sunspot drawings by Renaissance astronomer Johannes Kepler are showing us more about how the sun's cycle of activities work. "The group's findings … offer a key to resolving the ...

When you buy through links on our articles, Future and its syndication partners may earn a commission. The earliest datable sunspot drawings based on Johannes Kepler's solar observations with camera ...