Johannes is said to have been a rather sickly child, but was impossibly brilliant and excelled through his schooling, despite constant bullying and teasing by the other pupils. Somewhat of a loner, Johannes considered himself as an outsider, and tended to keep to himself during his childhood years.
Kepler was introduced to mathematics and astrology at a young age, and began attending the University of Tbingen in 1587. There he concentrated solely on his studies, proving himself as a superb mathematician. He graduated from there in 1591 and went on pursuing various different studies, until April of 1594, when he was offered the position of teacher of mathematics and astronomy at the Protestant school in Graz, Austria - he immediately accepted.
In April 1597, Kepler married Barbara Mller, and together they had three children: Susanna (1602), Friedrich (1604-1611), and Ludwig (1607-1663). It was in that same year in which he married that he published his first significant piece of work, The Cosmographic Mystery, in which he explained his argument on the relative distances of the planets from the Sun in the Copernican System. It was in this work which he defended the Copernican theory that the Sun, rather than the Earth, was at the center of the solar system. Although some had doubts, Kepler's opinions proved to be remarkably accurate. "Kepler was forced to leave his teaching post at Graz due to the Counter Reformation because he was Lutheran and moved to Prague to work with the renowned Danish astronomer, Tycho Brahe." ("Kepler Mission," 2005). "Unlike Brahe, Kepler believed firmly in the Copernican system." ("Astronomy 161," n.d.). When Brahe died in 1601, Kepler was appointed as his successor and given the title of 'Imperial Mathematician', the most esteemed appointment in mathematics in Europe.
What are the Most Important Things Johannes Kepler Accomplished in his Lifetime
It was at this point in his life when Kepler truly began his list of incredulous accomplishments. Within a span of only several years he published numerous works, including Astronomia Nova ("New Astronomy") in 1609, which contained his first two laws: one that planets move in elliptical orbits with the Sun as one of the foci, and the other, that a planet sweeps out equal areas in equal times. Following an opposite precept to other astronomers, Kepler brought an excitingly new view to things. "Kepler took an openly dynamic approach, introducing the physics into the heavens." ("The Galileo Project," 1995).
In 1613 Kepler published a work on chronology and the year of Jesus' birth which demonstrated that in his opinion the Christian calendar was in error by five years, and that Jesus had actually been born in 4 BC - an opinion that is now universally shared. Between 1617 and 1621 Kepler published still more ingenious works, including Epitome Astronomiae Copernicanae ("Epitome of Copernican Astronomy"), which was the most instrumental introduction to heliocentric