[Footnote 189: Copernicus (1473-1543) discovered the error of the old … — Essays
SAPIR 861
[Footnote 189: Copernicus (1473-1543) discovered the error of the old Ptolemaic system of astronomy and showed that the sun is the centre of our planetary system. Fearing the persecution of the church, he hesitated long to publish his discovery, and it was many years after his death before the world accepted his theory.]
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