Criticism of Scipione Chiaramonti's "De tribus novis stellis"

In the concluding part of the Second Day of the Dialogue, two books are brought over in which objections to the Earth's motion are set out. Simplicio wants to use both works, which had just been published, as a sort of last bulwark to defend the immobility of the Earth.

One of these works "De tribus novis stellis" ("On the three new stars") by the philosopher and mathematician Scipione Chiaramonti (1565–1652) of Cesena, at that time professor of natural philosophy in the University of Pisa. In it, Chiaramonti criticises Tycho Brahe and all those astronomers who regarded the three novae of 1572, 1600 and 1604 as stars in the heavens and not as sublunary phenomena. The text also aims to refute Copernican teaching. Novae are stars that are visible to the naked eye for a while and then become invisible again.

In the figure of Salviati in the external page"Dialogue" (external link)call_made (II 713–714), Galileo examines and discusses Chiaramonti's views before going on to reject them mercilessly.