About 491,000 results
Open links in new tab
  1. Johannes Kepler - Wikipedia

    He is a key figure in the 17th-century Scientific Revolution, best known for his laws of planetary motion, and his books Astronomia nova, Harmonice Mundi, and Epitome Astronomiae Copernicanae.

  2. Johannes Kepler | Biography, Discoveries, & Facts | Britannica

    Dec 23, 2025 · Johannes Kepler, German astronomer who discovered three major laws of planetary motion. His discoveries turned Nicolaus Copernicus’s Sun-centered system into a dynamic universe, …

  3. Johannes Kepler - Stanford Encyclopedia of Philosophy

    May 2, 2011 · Johannes Kepler (1571–1630) is one of the most significant representatives of the so-called Scientific Revolution of the 16 th and 17 th centuries.

  4. Johannes Kepler - World History Encyclopedia

    Aug 30, 2023 · Johannes Kepler (1571 to 1630) was a German astronomer and mathematician most famous for creating what was up to that point the most accurate model of planetary astronomy with …

  5. Kepler's laws of planetary motion - Wikipedia

    Johannes Kepler 's laws improved the model of Copernicus. According to Copernicus: [3][4] The planetary orbit is a circle with epicycles. The Sun is approximately at the center of the orbit. The …

  6. Johannes Kepler - Astronomy, Laws, Heliocentrism | Britannica

    Dec 23, 2025 · Johannes Kepler - Astronomy, Laws, Heliocentrism: The ideas that Kepler would pursue for the rest of his life were already present in his first work, Mysterium cosmographicum (1596; …

  7. Johannes Kepler - Astronomy, Mathematics, Astronomer | Britannica

    Nov 11, 2025 · Kepler was not alone in believing that nature was a book in which the divine plan was written. He differed, however, in the original manner and personal intensity with which he believed …

  8. Ex-Phillies outfielder Max Kepler gets 80-game PED suspension

    3 hours ago · Free agent outfielder Max Kepler has been suspended 80 games after testing positive for Epitrenbolone, a banned performance-enhancing drug, Major League Baseball announced Friday. …

  9. Kepler / K2 - NASA Science

    Sep 21, 2025 · The Kepler space telescope was NASA’s first planet-hunting mission, assigned to search a portion of the Milky Way galaxy for Earth-sized planets orbiting stars outside our solar system.

  10. The History of Johannes Kepler - NASA Jet Propulsion ...

    Oct 6, 2004 · Johannes Kepler (1571-1630) was a mathematician and physicist who not only observed, but also sought to explain the celestial dance above. As a rather frail young man, the exceptionally …