Final answer:
Astronomy focuses on the geocentric and heliocentric models proposed by ancient astronomers to explain the movements of celestial bodies.
Explanation:
Astronomy mainly focuses on several key dogmas, including the geocentric model proposed by ancient astronomers like Ptolemy. This model placed Earth at the center of the universe and suggested that everything revolved around it in circular orbits. However, this model was later replaced by the heliocentric model, with the Sun at the center, which better fit observational evidence.
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