<p>This paper examines Kepler’s earliest applications of the distance law in a group of manuscripts from 1601 to 1602. It argues that these texts reveal not merely a technical innovation but a methodological transformation: Kepler assumed that a physically grounded hypothesis must hold across the entire celestial system. The study reconstructs several early extensions of the law—to the Earth, to lunar theory, and to the relation between terrestrial eccentricity and the length of the year—showing how rapidly he treated the principle as universally valid. It also offers a systematic presentation of these manuscript episodes and proposes refinements to the chronology of Pulkovo XIV.</p>

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Kepler’s early applications of the distance law: manuscript evidence and the emergence of a universal physical principle

  • Christián C. Carman

摘要

This paper examines Kepler’s earliest applications of the distance law in a group of manuscripts from 1601 to 1602. It argues that these texts reveal not merely a technical innovation but a methodological transformation: Kepler assumed that a physically grounded hypothesis must hold across the entire celestial system. The study reconstructs several early extensions of the law—to the Earth, to lunar theory, and to the relation between terrestrial eccentricity and the length of the year—showing how rapidly he treated the principle as universally valid. It also offers a systematic presentation of these manuscript episodes and proposes refinements to the chronology of Pulkovo XIV.