Johannes Kepler

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Johannes Kepler

Kepler's revolutionary laws of planetary motion

planetary orbits: Kepler, Newton, and gravity

Kepler, Johannes

Kepler's first law

Kepler's second law

Kepler's third law

frontispiece from Tabulae Rudolphinae (1627; “Rudolphine Tables”) by Johannes Kepler

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Johannes Kepler

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Understanding Kepler’s Laws of Planetary Motion

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Johannes Kepler: Facts & Related Content

Written and fact-checked by The Information Architects of Encyclopaedia Britannica

Facts

Born	December 27, 1571 • Holy Roman Empire
Died	November 15, 1630 (aged 58) • Regensburg • Germany
Notable Works	“Astronomia Nova” • “Concerning the More Certain Fundamentals of Astrology” • “De Stella Nova” • “Epitome of Copernican Astronomy” • “Harmonies of the World” • “Prodromus Dissertationum Mathematicarum Continens Mysterium Cosmographicum”
Subjects Of Study	Kepler’s Nova • Copernican system • Kepler’s laws of planetary motion • atmospheric refraction • planet • Solar System • space motion • vision • volume
Role In	Scientific Revolution

Did You Know?

Kepler described a fictitious voyage to the moon in his book "Somnium".
Kepler's mother was accused of witchcraft.

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Johannes Kepler

Kepler, Johannes

Kepler's first law

Kepler's second law

Kepler's third law

frontispiece from Tabulae Rudolphinae (1627; “Rudolphine Tables”) by Johannes Kepler

Astronomers Monument

An artist's visualization of Johannes Kepler discussing his discoveries with Holy Roman Emperor Rudolf II.

Kepler's revolutionary laws of planetary motion

planetary orbits: Kepler, Newton, and gravity

How we understood the universe throughout history

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