The world is spherical; whether it is finite or infinite is an open question.
Heliocentric model of the solar system
The world is spherical; whether it is finite or infinite is an open question.
Heliocentric model of the solar system
From 'De Revolutionibus Orbium Coelestium', Book I, Chapter 1. He states it's spherical, but doesn't definitively answer finite/infinite.
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