The Earth is cylindrical, three times as wide as it is deep, and only the upper part is inhabited. But this Earth is isolated in space, and the sky is a complete sphere in the center of which is located, unsupported, our cylinder, the Earth, situated at an equal distance from all the points of the sky.
AnaximanderThere are many worlds and many systems of Universes existing all at the same time, all of them perishable.
Anaximander