Extraordinary handwritten astronomical manuscript in Italian, 79 leaves (all with diagrams), 7.5 x 10.75, with spine label annotated, "Sul Mondo di Baldassare Valaputi." The impressive manuscript opens with a diagram of the "sistema del universo, pensato gia da Aristotile"—the model of the universe conceived by Aristotle. This is followed by a diagrams of the planetary systems developed by "Claudio Tolomeo," Ptolemy; "Nicolas Copernico Polaco," Nicolaus Copernicus; and "Ticone Brahe," Tycho Brahe. Further notable pages include diagrams of Earth's orbit of the sun, maps of the moon, diagrams of eclipses, depictions of the planets, maps, and more. The manuscript has been stab-bound in hardcover boards, and includes a custom-made slipcase. Book condition: VG/None, with general wear and some dampstaining to boards. A remarkable, exceptionally highly detailed manuscript that chronicles man's knowledge of the universe through the ages.