Kalli nassin da ke ƙasa sannan ka amsa tambayar daga baya a cikin harshe ɗaya kamar nassin: Nassi: Kodayake an kafa ka'idodin ka'idodin Girkanci na Girkanci a lokacin Aristotle, cikakkun bayanai game da tsarinsa ba su zama misali ba. Tsarin Ptolemaic, wanda masanin ilimin lissafi na Helenanci Claudius Ptolemaeus ya haɓaka a karni na 2 AD, a ƙarshe ya daidaita geocentrism. Babban aikinsa na ilmin lissafi, Almagest, shine ƙarshen ƙarni na aikin Hellenic, Hellenistic da Babylonian astronomers. Fiye da ƙarni na Turai da na Musulunci Masana ilmin lissafi sun ɗauka cewa shi ne madaidaicin samfurin sararin samaniya. Saboda tasirinsa, wasu lokuta mutane suna tunanin cewa tsarin Ptolemaic daidai yake da samfurin geocentric. Tambaya: Yaushe aka daidaita geocentrism?
Karni na biyu AD