For Aristotle the terrestrial is a place of birth and death, based in these elements.
The heavens are a separate realm governed by their own rules.
These qualities can be replaced by their opposites, which in this system become how change happens on Earth.
For example, when heated, water seemingly turns steam which looks like air.
A wide range of astronomy texts over time use this as a way to illustrate the roundness of the Earth.
As the image suggests this is exactly what one would expect on a spherical Earth.
Aristotle asserted that you could further reduce these elements into two pairs of qualities, hot and cold and wet and dry.
The combination of each of these qualities resulted in the elements.
This section offers a tour of some of the astronomical ideas and models from ancient Greece as illustrated in items from the Library of Congress collections. C., it was widely accepted that the Earth is a sphere. C., Empedocles and Anaxagoras offered arguments for the spherical nature of the Earth.
This is a critical point, as there is a widespread misconception that ancient peoples thought the Earth was flat. During a lunar eclipse, when the Earth is between the sun and the moon, they identified the shadow of the Earth on the moon.