Galileo Galilei

Sidereus nuncius, Venetiis, apud T. Baglionum, 1610; facsimile

[IMSS: 3016]

To preserve the priority of his celestial discoveries, Galileo wrote and printed the Starry Messenger. He included in the book the observations of the terrestrial nature of the Moon, of the stellar composition of the Milky Way, and of the four Jupiter's satellites. In honour of the House of Medici, Galileo named the latter "Medicean stars".

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