24 de Maio:Uma data muito especial para Copérnico e Lattes!

De revolutionibus is divided into six "books" (sections or parts):

• Book I chapters 1-11 are a general vision of the heliocentric theory, and a summarized exposition of his cosmology. Chapters 11-14 are a basic introduction to the mathematics of trigonometry.
• Book II is mainly theoretical and describes the principles of spherical astronomy and a list of stars, as a basis for the arguments developed in the following books.
• Book III describes the apparent movements of the Sun and related phenomena.
• Book IV is a similar description of the Moon and its orbital movements.
• Books V and VI are the concrete exposition of the new system and explain how to calculate the positions of astronomical objects based on the heliocentric model.