Contrary to popular belief, astronomers of the Middle Ages and Renaissance did not resort to "epicycles on epicycles" in order to correct the original Ptolemaic models—until one comes to Copernicus himself.
Suprotno od popularnog testiranja, astronomi iz srednjeg vijeka i renesanse nisu pribjegavali modelu "krugova na krugovima" kako bi ispravili prvobitne ptolomejske modele.