Geocentric model

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Figure o the heivenly bouks — An illustration o the Ptolemaic geocentric seestem bi Portuguese cosmografer an cairtografer Bartolomeu Velho, 1568 (Bibliothèque Nationale, Paris)

In astronomy, the geocentric model (an aa kent as geocentrism, or the Ptolemaic seestem) is a supersedit description o the universe, whaur the Yird is at the centre o aw the celestial bouks.