Kepler’s first job was a math teacher

Kepler began his incredible scientific career in obscurity. Johannes Kepler taught math in a religious school in the Austrian city of Graz, which is an intriguing detail about him. Prince Hans Ulrich von Eggenberg helped finance the majority of his subsequent experiments and inventions, and he grew close during his time spent teaching there.

Near the completion of his studies, Kepler was given a job teaching astronomy at the Protestant school in Graz, despite his intention to become a preacher. At the age of 22, in April 1594, he assumed office. He worked as Tycho Brahe's assistant in Prague before rising to the position of royal mathematician under Emperors Rudolf II and Matthias and Ferdinand II and served as General Wallenstein's counselor. Keppler rose to the position of chief mathematician for Emperor Rudolf II thanks to his connection with Prince Hans Ulrich. Kepler supported his scientific findings with the help of his religious upbringing.

For instance, he insisted that God built the world by a cunning plan. One needs to embrace the light of reason to comprehend this divine purpose. "Celestial physics" is the term used to describe Kepler's ideas. He held that science and religion should collaborate rather than compete.