Nicolaus Copernicus

De revolutionibus orbium coelestium, Norimbergae, apud Ioh. Petreium, 1543

[Biblioteca Nazionale Centrale di Firenze (BNCF): 5.2.132.1]

The Copernican system presents, in order of increasing distance from the Sun, the spheres of Mercury, Venus, the Earth, Mars, Jupiter, Saturn, and the fixed stars' sphere. The planetary distances are not in scale, and especially fixed stars' sphere is much more far from the Sun. Otherwise, because of Earth's motion, little changes in stars' positions should be observed.

.................................