Dialogue Concerning the Two Chief World Systems
The Dialogue Concerning the Two Chief World Systems is a 1632 Italian-language book by Galileo Galilei comparing the Copernican system with the traditional Ptolemaic system. It was translated into Latin as Systema cosmicum in 1635 by Matthias Bernegger. The book was dedicated to Galileo's patron, Ferdinando II de' Medici, Grand Duke of Tuscany, who received the first printed copy on February 22, 1632.
A copy of the Dialogo, Florence edition, located at the Tom Slick rare book collection at Southwest Research Institute, in Texas.
Actual path of cannonball B is from C to D
Galileo di Vincenzo Bonaiuti de' Galilei, commonly referred to as Galileo Galilei or simply Galileo, was an Italian astronomer, physicist and engineer, sometimes described as a polymath. He was born in the city of Pisa, then part of the Duchy of Florence. Galileo has been called the father of observational astronomy, modern-era classical physics, the scientific method, and modern science.
1636 portrait
Portrait believed to be of Galileo's elder daughter Virginia, who was particularly devoted to her father.
Galileo's "cannocchiali" telescopes at the Museo Galileo, Florence
An illustration of the Moon from Sidereus Nuncius, published in Venice, 1610
