Kepler When it comes to people who are well-versed in almost every aspect of life, Johannes Kepler was one of the few. Unlike most of the great thinkers of his time, he was not skeptical about recording his discoveries in correspondence and having them published so that his ideas would receive full credit. In Kepler's time, there were no scientific journals in which he could publish his findings. His work in developing the planetary laws of motion surpasses all discoveries in celestial mechanics. Not to mention that this man is credited with the origin of the word satellite as well as several firsts in the field of optics. Johannes Kepler was born in Weil der Stadt, Wuttenberg, on December 27, 1571. Wurttenberg was then part of the Holy Roman Empire, but its borders are now in present-day Germany. He died on November 15, 1630 in Regensburg, which is also currently in Germany. Kepler was the first child of a mercenary soldier and the daughter of an innkeeper.# The same inn in which Johannes stayed for much of his childhood after the age of five, when his father left the family to fight in the Netherlands. Kepler's early work at a nearby seminary earned him enough recognition to honor a scholarship to the University of Tübingen.1 It was there that he was first introduced to the ideas of Copernicus, which he immediately seemed to like it very much. In one of his first published works, when he was a mathematics professor in Graz, he was the first to defend Copernicus and his Copernican system. The theory that the planets revolve around the sun and not around the Earth was still disproven by some of the most eminent thinkers of the time. His school was definitely Lutheran, which was also his family's religion, so the connection was strong. He held firmly to the Augsburg Confession of Lutheranism, but refused to sign the Formula of Concord due to his disagreement with some of the values ​​listed there.# This did not sit well with the authorities and Kepler was excluded from the Sacrament in the Lutheran Church. He also refused to convert to Catholicism during this period, which left him with no side to take in the Thirty Years' War. This did not deter him from his faith and belief in God..