By 1589 he was accepted to the University of Tubingen and began studying astronomy, mathematics, philosophy, and theology. He also learned astronomy from Michael Mastlin, who was an adamant believer in the heliocentric theory of Copernicus. Mastlin taught the Ptolemaic system because it was part of the universities. In 1594 the university recommended Kepler to become a mathematician at the Lutheran school at Graz after his final in training theology.
In 1596 while teaching mathematics at the university, …show more content…
58). Brahe collected astronomical observations for the majority of his life on the island of Hven where he built a castle using the best equipped observatories available. He was required to calculate new orbits of planetary objects using observations collected by Brahe. After becoming his assistant, Kepler expected to have access to all of Brahe’s observational data, reluctantly, Brahe was very cautious and considered them to be of extreme importance. Brahe eventually grew to respect his intelligence based on his theories and allowed him see more of his