"Copernican system." YourDictionary, n.d. Web. 07 December 2018. <https://www.yourdictionary.com/copernican-system>.
Copernican system. (n.d.). Retrieved December 07th, 2018, from https://www.yourdictionary.com/copernican-system
From Copernicus (“a surname”) + -an + system. After Polish astronomer Nicolaus Copernicus, who formulated and proposed the theory.
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