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Write 4 page essay on the topic Nicolaus Copernicus.was aware of this and could not present any observational "proof" in his manuscript, relying instead on arguments about what would be a more complet
Write 4 page essay on the topic Nicolaus Copernicus.
was aware of this and could not present any observational "proof" in his manuscript, relying instead on arguments about what would be a more complete and elegant system. From publication until about 1700, few astronomers were convinced by the Copernican system, though the book was relatively widely circulated (around 500 copies are known to still exist, which is a large number by the scientific standards of the time). Many astronomers, however, accepted some aspects of the theory at the expense of others, and his model did have a large influence on later scientists such as Galileo and Johannes Kepler, who adopted, championed and (especially in Kepler's case) sought to improve it. Galileo's observation of the phases of Venus produced the first observational evidence for Copernicus' theory.
The Copernican system can be summarized in seven propositions, as Copernicus himself collected them in a Compendium of De revolutionibus that was found and published in 1878:
1. Orbits and celestial spheres do not have a unique, common, center.
2. The center of the Earth is not the center of the Universe, but only the center of the Earth's mass and of the lunar orbit.
3. All the planets move along orbits whose center is the Sun, therefore the Sun is the center of the World. (Copernicus was never certain whether the Sun moved or not, claiming that the center of the World is "in the Sun, or near it.")
4. The distance between the Earth and the Sun, compared with the distance between the Earth and the fixed stars, is very small.
5. The daytime motion of the Sun is only apparent, and represents the effect of a rotation that the Earth makes every 24 hours around its axis, always parallel to itself.
6.
