wonders-of-the-cosmos: Nicolaus Copernicus Nicolaus Copernicus (19 February 1473 – 24 May 1543) was a Renaissance-era mathematician and astronomer who formulated a model of the universe that placed the Sun rather than the Earth at the center of the
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original: https://www.tumblr.com/blog/view/jb2489/626376147576504320