Aristotle<3

Aristotle's system of the world had the stationary Earth at the center. Above it, water, and above water, air. Above air was fire. An object's natural place in the world was determined by its make-up. Natural motion involved solids falling to earth (the ground), liquids flowing to bodies of water, gases flowing to the atmosphere, and fire seeking the heavens.

 

Scientist Valentines

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Taken on February 9, 2011