Aristotle contribution in fields of science?

IMHO, not much past his development of prepositional logic which is important in reasoning and mathematics. Aristotle's reliance on observation was minimal. He opposed the concept of "atoms", proposed the "impedus" theory of motion, the Earth as the center of the Universe, and believed the brain to be little more than the means to cool blood. The adoption of Aristotelian 'science' by the christian church (ironically from Arabic Aristotelians) stunted the development of science and technology in western Europe for over five centuries.