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Galileo Galilei, Letter to Belisario Vinta


Galileo Galilei (1564-1642)
Letter to Belisario Vinta, Padua, July 1610
Florence, Biblioteca Nazionale Centrale, Ms. Gal. 86, f. 42r

Galileo informs the Secretary of State of the Grand Duchy of Tuscany that, thanks to his telescope, he has discovered that Saturn comprises three bodies. He provides a rough outline sketch of the planet's three-bodied aspect.