"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 ...

Gazing up at the clear blue sky, our eyes are often drawn to the Sun, that magnificent burning orb that illuminates our days, warms our planet, and supports the growth of our food. But how much do we ...

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 ...