2 results in English
Works of Galileo Galilei, Part 3, Volume 15, Astronomy: The Assayer
Il saggiatore (The assayer) by Galileo Galilei (1564–1642) is the final and most significant work in the polemic regarding the characteristics of comets involving the Italian scientist and mathematician in the years 1618–23. Three comets appeared in the skies over Europe in 1618, giving rise to a debate about the nature of these celestial bodies. In 1619 Jesuit priest Orazio Grassi published a pseudonymous treatise on the comets. Grassi’s interpretation was then criticized in Discorso delle comete (Discourse on comets), a work published by Mario Guiducci but ...
Works of Galileo Galilei, Part 3, Volume 12, Astronomy: Discourse on the Comets Produced by him at the Florentine Academy During his Very Consulship
Three comets appeared in the skies over Europe in 1618, a phenomenal series of events that ignited a debate about the nature of these celestial bodies and the implications of their appearance for the Aristotelian theory that celestial bodies were unchanging and “incorruptible.” In 1619, the Jesuit astronomer and mathematician Orazio Grassi published under a pseudonym his treatise on the comets, in which he upheld the established view of celestial bodies as unchangeable and orbiting the Earth. Already under attack for his defense of the theories of Copernicus, Galileo Galilei ...