Johannes Kepler cover

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Johannes Kepler

German mathematician, astronomer and astrologer

1571   -   1630

country of citizenship: Germany, Holy Roman Empire
educated at: University of Tübingen
occupation: naturalist, astrologer, theologian, mathematician, astronomer, science writer, musicologist, physicist, cosmologist, music theorist, science fiction writer, writer

Johannes Kepler (; German: [joˈhanəs ˈkɛplɐ]; December 27, 1571 – November 15, 1630) was a German mathematician, astronomer, and astrologer. Kepler is a key figure in the 17th-century scientific revolution. He is best known for his laws of planetary motion, based on his works Astronomia nova, Harmonices Mundi, and Epitome of Copernican Astronomy. These works also provided one of the foundations for Isaac Newton's theory of universal gravitation. Kepler was a mathematics teacher at a seminary school in Graz, where he became an associate of Prince Hans Ulrich von Eggenberg. Later he became an assistant to the astronomer Tycho Brahe in Prague, and eventually the imperial mathematician to Emperor Rudolf II and his two successors Matthias and Ferdinand II. He also taught mathematics in Linz, and was an adviser to General Wallenstein. Additionally, he did fundamental work in the field of optics, invented an improved version of the refracting telescope (the Keplerian telescope), and was mentioned in the telescopic discoveries of his contemporary Galileo Galilei. He was a corresponding member of the Accademia dei Lincei in Rome.Kepler lived in an era when there was no clear distinction between astronomy and astrology, but there was a strong division between astronomy (a branch of mathematics within the liberal arts) and physics (a branch of natural philosophy). Kepler also incorporated religious arguments and reasoning into his work, motivated by the religious conviction and belief that God had created the world according to an intelligible plan that is accessible through the natural light of reason. Kepler described his new astronomy as "celestial physics", as "an excursion into Aristotle's Metaphysics", and as "a supplement to Aristotle's On the Heavens", transforming the ancient tradition of physical cosmology by treating astronomy as part of a universal mathematical physics.
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works

11

Rudolphine Tables

astronomical data

author: Johannes Kepler

1627

Astronomia nova

book by Johannes Kepler

author: Johannes Kepler

1609

Harmonices Mundi

book by Johannes Kepler

author: Johannes Kepler

1619

Somnium

Johannes Kepler story

author: Johannes Kepler

1634

Dioptrice

book by Johannes Kepler

author: Johannes Kepler

1611

Epitome Astronomiae Copernicanae

book by Johannes Kepler

author: Johannes Kepler

1621

De Cometis Libelli Tres

book by Johannes Kepler

author: Johannes Kepler

1619

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