In 1607, Johannes Kepler projected an image of the Sun onto a piece of paper and spotted a dark smudge. He thought he was ...
Few things seem as immutable than the Sun —after all, it’s been fusing hydrogen for five billion years, and it’ll keep on ...
A team of Japanese and Belgian astronomers has re-examined the sunspot drawings made by 17th century astronomer Johannes Kepler with modern analytical techniques. By doing so, they resolved a ...
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