Galileo's Moon Drawings

Not clear whether he sketched them, or whether they were just illustrations he included in a folio of his other astronomical work.

"In either case, it is rather beautiful. But it didn’t seem that way to many people at the time. It was a shock and an affront to suggest that God’s heavenly objects were not perfect but pocked and roughened with craters and protuberances like some ordinary rock of the earthly realm. This would all come to a head when Galileo visited the pope in 1616 …"

via Tom Christensen