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[[Image:Ptolemaicsystem-small.png|right|thumb|Rendition of a geocentric system from the Middle Ages.]]

[[Image:Ptolemaicsystem-small.png|right|thumb|Rendition of a geocentric system from the Middle Ages.]]

A '''Geocentric theory''' is a astronomical theory which describes the universe as a ''Geocentric system'', i.e., a system which put the Earth in the center of the universe, or at least in the center of the solar system.

A '''Geocentric theory''' is a disproved astronomical theory which describes the universe as a ''Geocentric system'', i.e., a system which put the Earth in the center of the universe, or at least in the center of the solar system.

The Greek philosophers Aristotle and Plato described such a theory wherein all celestial bodies move on spheres around the earth, the moon of the innermost one, the fix stars of the one most out.

The Greek philosophers Aristotle and Plato described such a theory wherein all celestial bodies move on spheres around the earth, the moon of the innermost one, the fix stars of the one most out.