Formulating Laws of Planetary Motion

Johannes Kepler

A German astronomer, mathematician, and natural philosopher of the Holy Roman Empire. He established Kepler's three laws of planetary motion, which showed that planets move around the Sun in elliptical orbits, making a major contribution to the formation of modern astronomy. Utilizing the extremely precise observational data of Tycho Brahe, he studied planetary motion and left significant achievements in fields such as optics, geometry, mathematics, and calendar making.

Timeline

Category
Element

Year	Johannes Kepler
1568	Eighty Years' War (Age: 3 years before birth, Period: 1578–1581, Location: Various parts of the Low Countries, Spanish Netherlands, Dutch Republic, etc.)
1571	Birth of Johannes Kepler (Period: December 27, 1571, Location: Weil der Stadt (now Baden-Württemberg, Germany))
1589	Studies at the University of Tübingen (Johannes Kepler, Age: 17 years old, Period: c. 1589–1594, Location: Tübingen (present-day Germany))
1594	Becoming a Teacher of Mathematics and Astronomy in Graz (Johannes Kepler, Age: 22 years old, Period: 1594–1600, Location: Graz (present-day Austria))
1597	Marriage (Johannes Kepler, Barbara Müller, Age: 25 years old, Period: April 27, 1597, Location: Graz (present-day Austria))
1600	Exile from Graz (Johannes Kepler, Age: 28 years old, Period: 1600, Location: Graz (present-day Austria)) Joint Research with Tycho Brahe in Prague (Johannes Kepler, Age: 28 years old, Period: 1600–1601, Location: Prague (present-day Czech Republic))
1601	Activities as Imperial Mathematician (Johannes Kepler, Age: 29 years old, Period: 1601–1612, Location: Prague) Death of Tycho Brahe and Kepler's Appointment as Imperial Mathematician (Johannes Kepler, Age: 29 years old, Period: October 1601, Location: Prague (present-day Czech Republic))
1609	Establishment of Kepler's First and Second Laws of Planetary Motion (Age: 37 years old, Period: 1609, Location: Prague)
1612	Relocation to Linz and Research Activities (Johannes Kepler, Age: 40 years old, Period: 1612–1627, Location: Linz (present-day Austria))
1613	Marriage (Johannes Kepler, Susanna Reuttinger, Age: 41 years old, Period: October 30, 1613, Location: Eferding (present-day Austria, near Linz))
1615	Witch Trial of Kepler's Mother, Katharina (Age: 43 years old, Period: 1615–1621, Location: Leonberg, Güglingen, Württemberg) Intervention in the Witch Trial of His Mother Katharina (Age: 43 years old, Period: 1615–1621, Location: Württemberg region)
1618	Thirty Years' War (Age: 46 years old, Period: 1618–1648, Location: Central Europe centered on regions of the Holy Roman Empire, Low Countries, etc.) Religious Conflicts in Linz and the Impact of War (Age: 46 years old, Period: 1618–1626, Location: Linz (present-day Austria))
1619	Publication of Kepler's Third Law of Planetary Motion (Age: 47 years old, Period: 1619, Location: Linz)
1620	Battles during the Thirty Years' War and the Bohemian Revolt (Age: 48 years old, Period: 1620, Location: Around Prague, Bohemia)
1627	Publication of the Rudolphine Tables (Age: 55 years old, Period: 1627, Location: Ulm (present-day Germany))
1628	Move to Wallenstein's Court (Age: 56 years old, Period: 1628–1630, Location: Zagan (present-day Żagań, Poland))
1630	Death of Johannes Kepler (Age: 58 years old, Period: November 15, 1630)

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Element

Europe World

Group	List
East India Company	James Lancaster John Davis William Keeling Henry Middleton Thomas Best Thomas Roe Josiah Child Gerald Aungier Job Charnock
Expansion into North America	John Smith John Winthrop William Bradford William Penn James Oglethorpe Cecil Calvert John Cabot
Science and Astronomy	Galileo Galilei Johannes Kepler Francis Bacon René Descartes William Harvey Robert Boyle Robert Hooke Christiaan Huygens Antonie van Leeuwenhoek Isaac Newton Gottfried Wilhelm Leibniz
Arts and Culture	Peter Paul Rubens Rembrandt van Rijn Diego Velázquez Johannes Vermeer Anthony van Dyck Giovanni Battista Lulli Antoine Watteau

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Formulating Laws of Planetary Motion

Johannes Kepler

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