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G CIEL 1_025

Le livre du Ciel et du Monde

Illustration of the Celestial spheres

Note that although the order of the spheres is conventional, with the Moon and Mercury closest the Earth and Saturn and the stars farthest, the spheres are convex upward centered on God rather than convex downward centered on the Earth.

1377, Paris, BnF, Manuscrits, Fr. 565, fo 69