1. Soccorsi FilippoS.J. Il processo di Galileo (Rome, 1947). Selections relevant to this paper are translated in Stillman Drake, Galileo studies: Personality, tradition, and revolution (Ann Arbor, 1970), 191–3.
2. Galileo's Proof for the Earth's Motion from the Movement of Sunspots
3. Sunspots, Galileo, and the Orbit of the Earth
4. Dialogue Concerning the Two Chief World Systems
5. Citations are from Aristotle, De caelo, 290a25. The translation is from Jonathan Barnes (editor), The complete works of Aristotle, i (Princeton, 1984), 478.