What is Geocentrism?
[[File:Ptolemaic system (PSF).png|thumb|Diagram with planets circling the Earth]] '''Geocentrism''' is the belief that the [[Earth]] is fixed at the centre of the [[Universe]]. Geocentrists accept that the Earth is round. Before the [[16th century]], most people believed in the theory of geocentrism. From Earth, it looks like the [[Sun]] and [[star]]s are moving across the sky. The geocentric was the predominant description of the cosmos in many European [[Ancient history|ancient]] civilizations, such as those of [[Aristotle]] in Classical Greece and [[Ptolemy]] in Roman Egypt. In about 150 AD,<ref>{{cite encyclopedia|last=Kunitzsch|year=2008|url-status=live|archive-date=2018-06-10|archive-url=https://web.archive.org/web/20180610113123/https://link.springer.com/referenceworkentry/10.1007%2F978-1-4020-4425-0_8988|doi=10.1007/978-1-4020-4425-0|isbn=978-1-4020-4960-6|location=Dordrecht|publisher=Springer|edition=2008|first=Paul|language=English|access-date=2021-04-08|url=https://link.springer.com/referenceworkentry/10.1007%2F978-1-4020-4425-0_8988|title=Almagest: Its Reception and Transmission in the Islamic World|encyclopedia=Encyclopaedia of the History of Science, Technology, and Medicine in Non-Western Cultures|editor-first=Helaine|editor-last=Selin|quote=Around AD 150, Ptolemy wrote his great handbook of astronomy called ''Mathematike Syntaxis''...}}</ref> Ptolemy wrote a book to explain in great detail how the spherical Earth is surrounded by things that move in the sky. Ptolemy’s geocentric model was adopted and refined during the [[Islamic Golden Age]], which Muslims believed correlated with the teachings of [[Islam]].<ref>{{Cite web|url=https://www.princeton.edu/~hos/mike/texts/ptolemy/ptolemy.html|title = Ptolemaic Astronomy in the Middle Ages}}</ref><ref>{{Cite book|chapter-url=https://link.springer.com/referenceworkentry/10.1007%2F978-1-4020-4425-0_8988|doi=10.1007/978-1-4020-4425-0_8988|chapter=Almagest: Its Reception and Transmission in the Islamic World|title=Encyclopaedia of the History of Science,