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Copernicus
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1972 U.S. orbiting astronomy observatory Copernicus launched
1972 Orbiting Astronomical Observatory 4 (Copernicus) launched 1616 Copernicus' "de Revolutionibus" placed on Catholic Forbidden index 1543 Nicolas Copernicus, astronomer, dies in Poland 1514 Copernicus makes his 1st observations of Saturn 1501 Copernicus formally installed as canon of Frauenberg Cathedral 1497 Nicolaus Copernicus 1st recorded astronomical observation, 1473 Nicolaus Copernicus, Torun, Poland, astronomer, heliocentrism |
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