907J Gassendi, Pierre (1592-1655); Galilei, Galileo (1564-1642); Kepler, Johannes (1571-1630 Petri Gassendi Institutio Astronomica: Juxta Hypotheseis tam Veterum quàm Recentiorum. Cui accesserunt Galilei Galilei Nuncius Sidereus; et Johannis Kepleri Dioptrice. Tertia editio prioribus Correctior. London: Jacob Flesher for William Morden, … Continue reading Two of the Most Important Books in Early Observational Astronomy: Galileo’s “Starry Messenger” and Kepler’s “Dioptrice”