When, in the year of his death, in 1543, Copernicus published On the Revolutions of the Spheres of Heaven suggesting that not the Earth, but the Sun was at the center of the planetary system, this created some stir. Copernicus, anticipating trouble, had made it a highly technical book, in which he advocated his model as something of practical use but not necessarily as the physical truth.
— Nov 11, 2025 12:04AM
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