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Nicolaus (or Nicholas) Copernicus (1473-1543) was a Polishastronomer of German origins who developed a heliocentric (Sun-centered) theory of the solar system. He was also a priest and a medic.
Nicolaus (or Nicholas) Copernicus (1473-1543) was a Polishastronomer of German origins who developed a heliocentric (Sun-centered) theory of the solar system. He was also a church canon, an astrologer and a medic.
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His major theory was published in the book De revolutionibus orbium coelestium ("On the Revolutions of the Heavenly Spheres") in the year of his death 1543, even though he had arrived at it several decades earlier. This book marks the beginning of the shift from a geocentric? (and anthropocentric?) universe. Copernicus held that the Earth is another planet revolving around the fixed sun once a year, and turning on its axis once a day. The theory, unfortunately, still had some serious defects, like circular as opposed to elliptical orbits and epicycle?s, that made it no more precise in predicting ephemerides than the then current tables based on Ptolemy's model. But it had a large influence on scientists such as Galileo and Kepler, who adopted, championed and, in Kepler's case, improved the model. The book was put on the [Index of Forbidden Books]? in 1616 by the Roman Catholic Church. Galileo's observation of
His major theory was published in the book De revolutionibus orbium coelestium ("On the Revolutions of the Heavenly Spheres") in the year of his death 1543, even though he had arrived at it several decades earlier. This book marks the beginning of the shift from a geocentric? (and anthropocentric?) universe. Copernicus held that the Earth is another planet revolving around the fixed sun once a year, and turning on its axis once a day. He arrived at the correct order of the planets and explained the precession of the equinoxes correctly by a slow change in the position of the Earth's rotational axis. His theory, unfortunately, still had some serious defects, among them circular as opposed to elliptical orbits and epicycles?, that made it no more precise in predicting ephemerides than the then current tables based on Ptolemy's model. But it had a large influence on scientists such as Galileo and Kepler, who adopted, championed and, in Kepler's case, improved the model. The book was put on the [Index of Forbidden Books]? in 1616 by the Roman Catholic Church. Galileo's observation of
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