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  2. Johannes Kepler - Wikipedia

    en.wikipedia.org/wiki/Johannes_Kepler

    Johannes Kepler (/ ˈ k ɛ p l ər /; [2] ... He also invented an improved version of the refracting ... appeared, but Kepler did not believe the rumors until he saw ...

  3. Mysterium Cosmographicum - Wikipedia

    en.wikipedia.org/wiki/Mysterium_Cosmographicum

    Johannes Kepler's first major astronomical work, Mysterium Cosmographicum (The Cosmographic Mystery), was the second published defence of the Copernican system.Kepler claimed to have had an epiphany on July 19, 1595, while teaching in Graz, demonstrating the periodic conjunction of Saturn and Jupiter in the zodiac: he realized that regular polygons bound one inscribed and one circumscribed ...

  4. History of the telescope - Wikipedia

    en.wikipedia.org/wiki/History_of_the_telescope

    Notes on Hans Lippershey's unsuccessful telescope patent in 1608. The first record of a telescope comes from the Netherlands in 1608. It is in a patent filed by Middelburg spectacle-maker Hans Lippershey with the States General of the Netherlands on 2 October 1608 for his instrument "for seeing things far away as if they were nearby." [12] A few weeks later another Dutch instrument-maker ...

  5. Epitome Astronomiae Copernicanae - Wikipedia

    en.wikipedia.org/wiki/Epitome_Astronomiae...

    The Epitome Astronomiae Copernicanae is an astronomy book on the heliocentric system published by Johannes Kepler in the period 1618 to 1621. The first volume (books I–III) was printed in 1618, the second (book IV) in 1620, and the third (books V–VII) in 1621.

  6. Refracting telescope - Wikipedia

    en.wikipedia.org/wiki/Refracting_telescope

    Engraved illustration of a 46 m (150 ft) focal length Keplerian astronomical refracting telescope built by Johannes Hevelius. [11] The Keplerian telescope, invented by Johannes Kepler in 1611, is an improvement on Galileo's design. [12] It uses a convex lens as the eyepiece instead of Galileo's concave one.

  7. Musica universalis - Wikipedia

    en.wikipedia.org/wiki/Musica_universalis

    Musica universalis—which had existed as a metaphysical concept since the time of the Greeks—was often taught in quadrivium, [8] and this intriguing connection between music and astronomy stimulated the imagination of Johannes Kepler as he devoted much of his time after publishing the Mysterium Cosmographicum (Mystery of the Cosmos), looking over tables and trying to fit the data to what he ...

  8. Johannes Kepler thought he sketched Mercury orbiting across ...

    www.aol.com/news/johannes-kepler-1607-sketches...

    Scientists analyzed famed astronomer Johannes Kepler’s 1607 sketches of sunspots to solve a mystery about the sun’s solar cycle that has persisted for centuries.

  9. Celestial mechanics - Wikipedia

    en.wikipedia.org/wiki/Celestial_mechanics

    Johannes Kepler as the first to closely integrate the predictive geometrical astronomy, which had been dominant from Ptolemy in the 2nd century to Copernicus, with physical concepts to produce a New Astronomy, Based upon Causes, or Celestial Physics in 1609.