Two pages from the Galland manuscript, the oldest existing text of The Thousand and One Nights. Arabic manuscript, dates back to the 14th century from Syria in the Bibliotheque Nationale in Paris. (source)
fig. 9 - The earth is a sphere because that is the most perfect mathematical shape and all heavenly bodies are perfect. (Pythagoras, Ancient Greek) The Outer Sun is an ongoing series illustrating human ideas about the cosmos.