The Galileo Project at Rice University has some awesome primary sources about everyone’s favorite astronomer. They’ve got his collection of sunspot drawings from the sumer of 1613, as well as composite movies of those. I’m trying to imagine how he felt when he first observed them. I can totally see him making little flip books of his illustrations and watching the sunspots dance across the face of the sun.
They’ve also got scans of the manuscripts from the Jupiter observations‚Äînote that the images are embedded right there in the text. So cool. And the moon drawings are pretty sweet, too.