Hinc itur ad astra


Wolff, Ch. Der Anfangs-Gründe aller Mathematischen Wissenschaften... Th. 3. Halle, 1775.

Famous German mathematician, philosopher, professor of mathematics and natural philosophy at Hale University Christian Wolff‘s (1679–1754) treatise Outline of all mathematical sciences, including a part devoted to astronomy science. It was written on the ground of all known modern astronomical observations, laws and calculations of that time

Illustration of Saturn‘s Rings