“On Giving Astrology Sounder Foundations”
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Johannes Kepler
Johannes Kepler was a German polymath who was an astronomer, mathematician, astrologer, natural philosopher and music theorist. 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. The variety and impact of his work made Kepler one of the founders and fathers…
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science · German astronomer and mathematician (1571–1630) · naturalist · astrologer · Protestant theologian · mathematician · astronomer · musicologist · physicist · cosmologist · music theorist · philosopher · also Johannes Kepler, John Keppler, Johanes Kepler, Kepler, Keppler, John Kepler
Born 27 December 1571 · Died 15 November 1630 · Q8963
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2026· 1 entry
2024· 2 entries
Yahoo: Johannes Kepler thought he sketched Mercury orbiting across the sun. What he actually captured has solved a solar mystery
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CNN: Johannes Kepler thought he sketched Mercury orbiting across the sun. What he actually captured has solved a solar mystery
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2023· 1 entry
NDTV: Johannes Kepler's Science Fiction Novel, World's Oldest, To Be Adapted Into Mohiniyattam
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2022· 1 entry
National Catholic Register: Johannes Kepler: Only One Sun
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2021· 1 entry
dw: Johannes Kepler's astronomical legacy
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2017· 2 entries
Robb Report: Montblanc’s New Collection Honoring Johannes Kepler Includes a $1.5 Million Pen
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Forbes: Sky Writing: Montblanc's Homage To Scientist Johannes Kepler
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2013· 1 entry
gizmodo: Here’s the supernova Johannes Kepler studied 400 years ago
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2010· 1 entry
Tycho Brahe was exhumed by a Dutch-Czech team and his bones, teeth and beard where analyzed for mercury
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2006· 1 entry
“Epitaph he composed for himself a few months before he died, as quoted by Steven G. Krantz, Brian E. Blank, Calculusː Multivariable (2006) p. 126.”
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1999· 1 entry
“Gesammelte Werke, III, Dedication. Quoted in James R. Voelkel, Johannes Kepler and the New Astronomy, New York: Oxford University Press 1999, p. 66.”
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1996· 1 entry
Awarded International Space Hall of Fame (1996).
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1995· 1 entry
“Motz, Lloyd, et al. "Tycho Brahe and Johannes Kepler." The Story of Astronomy (1995): 69-87.”
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1993· 1 entry
“Essay dedicated to the Archduke Ferdinand, as quoted by Max Caspar, Kepler (1993) Sect. II, Ch. 9, p. 110.”
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1987· 1 entry
“Die Himmel hab ich gemessen, jetzt mess ich die Schatten der Erde. // Himmelwärts strebte der Geist, des Körpers Schatten ruht hier." - Übersetzung des von Kepler als Grabinschrift verfassten Distichons, nach: Johannes Hoppe: Johannes Kepler, Biographien hervorragender Naturwissenschaftler, Techniker und Mediziner, Band 17, Teubner, Leipzig, 1987, S.84”
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1975· 1 entry
“Nichts gibt es, was ich mit mehr ängstlicher Genauigkeit untersuche und was ich unbedingt wissen möchte: ob ich Gott, den ich bei der Betrachtung des ganzen Weltalls geradezu mit Händen greife, auch in mir selbst finden kann." - Übersetzung von Jürgen Hübner: „Die Theologie Johannes Keplers zwischen Orthodoxie und Naturwissenschaft.“ J.C.B. Mohr Tübingen 1975, S. 306 books.google”
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1959· 1 entry
“Letter to Herwart von Hohenberg (Feb 10, 1605) Johannes Kepler, Gessamelte Werke, 15:146, quoted in Max Caspar, Kepler (1959)”
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1941· 1 entry
“Wo Materie ist, dort ist auch Geometrie." - De fundamentis astrologiae certioribus, 1602, Thesis 1, XX, siehe auch: Johannes Kepler: Gesammelte Werke, Band IV, C. H. Beck'sche Verlagsbuchhandlung, München, 1941, S.15, Zeile 26”
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1937· 1 entry
(and is nearing completion in the early 21st century)
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1934· 1 entry
Establishing the Kepler-Kommission in the following year
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1930· 1 entry
“Himmel durchmaß mein Geist, nun meß ich das Dunkel der Erde, // Ward mir vom Himmel der Geist, ruht hier der irdische Leib.“ - nach Adolf Schmetzer: Johann Keplers Beziehungen zu Regensburg, in: Kepler-Festschrift I. Teil pdf, herausgegeben von Karl Stöckl, Regensburg 1930, S. 87”
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1911· 1 entry
“Translation & quotation by staff writer (April 29, 1911) "The Discovery of Kepler's Laws". Scientific American: Supplement 71 (1843). See p. 278.”
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1909· 1 entry
“Differential-Geometric Aspects of Dynamics,”
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1899· 1 entry
“The Geometry of Kepler and Newton,”
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1890· 1 entry
“As translated and quoted by Karl Fink in Geschichte der Elementar-Mathematik (1890) A Brief History of Mathematics (1903) Beman, W.W. & Smith, D.E., transl., at an unspecified page.”
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1871· 1 entry
“Kurzform: "in der Schöpfung greife ich Gott gleichsam mit den Händen." - Johann Rogner, Ueber Johannes Kepler's Leben und Wirken, Festrede den 15. October 1871 bei der Vorfeier des 300jährigen Geburtstages Kepler's, Comité der Kepler-Feier, Graz 1871, S, 6, Google Books”
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1858· 3 entries
“(Original lat.: "At ubi materia, ibi Geometria." - Opera omnia, ed. Ch. Frisch, vol. I (1858), p.423 books.google)”
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“Unknown translator, from De fundamentis astrologiae certioribus, in Opera Omnia, Vol. 1, Heyder & Zimmer, 1858, p. 417-438.”
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“Duo theoremata infinitae utilitatis, eoque pretiosissima, sed magnum discrimen tamen est inter utrumque. Nam prius, quod latera recti anguli possint tantum, quantum subtensa recto, hoc inquam recte comparaveris massae auri: alterum, de sectione proportionali, gemmam dixeris. - Mysterii Cosmographici Caput XIII, p.145 books.google Absatz r. (Opera omnia, ed. Ch. Frisch, vol. I, 1858))”
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1630· 26 entries
Died 1630-11-15.
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“Donde haya materia, existe geometría.”
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“Bruno ha concepito il mondo infinito in modo tale che quante sono le stelle fisse, tanti sono i mondi, e questo nostro mondo diviene uno fra i mondi innumerabili, perlopiù in nulla diverso dai rimanenti che lo circondano. (da De stella nova in pede serpentarii)”
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“En una vida sin penas, acaban por relajarse las cuerdas del alma.”
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“Bruno sostenne l'inutilità di tutte le religioni e che Dio è presente nel mondo. (da una lettera a Johann Brengger, 5 aprile 1608)”
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“My goal is to show that the heavenly machine is not a kind of divine living being but similar to a clockwork insofar as all the manifold motions are taken care of by one single absolutely simple magnetic bodily force, as in a clockwork all motion is taken care of by a simple weight. And indeed I also show how this physical representation can be presented by calculation and geometrically.”
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“La geometría tiene dos grandes tesoros: uno el teorema de Pitágoras y otro el número áureo. El primero se compara a una medida de oro, y el segundo a una piedra preciosa.”
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“Els planetes descriuen òrbites el·líptiques amb el Sol en un dels focus.L'òrbita de cada planeta és una el·lipse, un dels focus de la qual és ocupat pel Sol.”
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“(Original lat.: "Mensus eram coelos, nunc terrae metior umbras. // Mens coelestis erat, corporis umbra iacet." - Epistolae ad Joannem Kepplerum, ed. Michael Gottlieb Hansch, 1718, p.XXXIII books.google)”
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“Io credo che questa proporzione geometrica sia servita al Creatore quando introdusse la creazione di somiglianza dalla somiglianza, che continua indefinitamente.”
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“El moviment dels planetes compleix la llei de les àrees, la superfície escombrada pel radi vector és constant.La línia que uneix el planeta amb el Sol escombra àrees iguals en temps iguals.”
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“[Sul cannocchiale di Galileo Galilei] Oh canna meravigliosa, più preziosa d'uno scettro!”
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“El quadrat del període de revolució orbital d'un planeta és proporcional al cub del semieix major de la seva òrbita. El quadrat del període de revolució orbital d'un planeta és proporcional al cub de la seva distància mitjana al Sol. Hi ha proporcionalitat entre la potencia tercera del semieix major i el quadrat del període de revolució.”
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“Oh du herrliches Rohr, köstlicher als ein Szepter!”
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“Nature uses as little as possible of anything.”
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“Vim coeli reserate viri: venit agnita ad usus: Ignotae videas commoda nulla rei.”
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“Geometry, coeternal with God and shining in the divine Mind, gave God the pattern... by which he laid out the world so that it might be best and most beautiful and finally most like the Creator.”
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“Truth is the daughter of time, and I feel no shame in being her midwife.”
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“Variant translation: A fresh assault overcame the darkness of my reason...”
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“The wisdom of the Lord is infinite as are also His glory and His power. Ye heavens, sing His praises: sun, moon, and planets, glorify Him in your ineffable language! Praise Him, celestial harmonies, and all ye who can comprehend them! And thou, my soul, praise thy Creator! It is by Him and in Him that all exist.”
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“I much prefer the sharpest criticism of a single intelligent man to the thoughtless approval of the masses.”
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“deutscher Astronom, Astrologe, Mathematiker und evangelischer Theologe”
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“Cuanto más adelanta el hombre en la penetración de los secretos de la naturaleza, mejor se le descubre la universalidad del plan eterno.”
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“Anche la pietà, anche il sacrificio di sé fanno parte delle passioni cieche: si scatenano con impeto e disprezzano il buon senso.”
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“Variant translation: I feel carried away and possessed by an unutterable rapture over the divine spectacle of heavenly harmony... I write a book for the present time, or for posterity. It is all the same to me. It may wait a hundred years for its readers, as God has also waited six thousand years for an onlooker.”
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“Variant translation: It may well wait a century for a reader, as God has waited six thousand years for an observer.”
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1571· 1 entry
Born 1571-12-27.
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