'Alexander': Über Aristoteles Metaphysik 12 von Professor Fred D. Miller, Jr. (Engli
95,04 €
The fixed stars are whirled around it on an outer sphere, the sun, moon and recognised planets on interior spheres, but with counteracting spheres to make the motions of each independent of the motions of others and of the fixed stars, thus yielding a total of 55 spheres.
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