{"id":194,"date":"2015-10-24T04:22:52","date_gmt":"2015-10-24T04:22:52","guid":{"rendered":"http:\/\/theperihelioneffect.com\/?p=194"},"modified":"2018-05-04T22:08:15","modified_gmt":"2018-05-04T22:08:15","slug":"johannes-kepler","status":"publish","type":"post","link":"http:\/\/theperihelioneffect.com\/johannes-kepler\/","title":{"rendered":"Johannes Kepler"},"content":{"rendered":"<p><a href=\"http:\/\/theperihelioneffect.com\/wp-content\/uploads\/2015\/10\/johannes-kepler-20293440.jpg\"><img fetchpriority=\"high\" decoding=\"async\" class=\"wp-image-46 size-medium alignleft\" src=\"http:\/\/theperihelioneffect.com\/wp-content\/uploads\/2015\/10\/johannes-kepler-20293440-300x290.jpg\" alt=\"johannes-kepler-20293440\" width=\"300\" height=\"290\" srcset=\"http:\/\/theperihelioneffect.com\/wp-content\/uploads\/2015\/10\/johannes-kepler-20293440-300x290.jpg 300w, http:\/\/theperihelioneffect.com\/wp-content\/uploads\/2015\/10\/johannes-kepler-20293440-1024x990.jpg 1024w, http:\/\/theperihelioneffect.com\/wp-content\/uploads\/2015\/10\/johannes-kepler-20293440.jpg 1344w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/a><\/p>\n<p><b>Johannes Kepler<\/b>\u00a0(December 27, 1571\u00a0\u2013 November 15, 1630) was a\u00a0German\u00a0mathematician,\u00a0astronomer, and\u00a0astrologer. A key figure in the 17th century\u00a0scientific revolution, he is best known for his\u00a0laws of planetary motion, based on his works\u00a0<i>Astronomia nova<\/i>,\u00a0<i>Harmonices Mundi<\/i>, and\u00a0<i>Epitome of Copernican Astronomy<\/i>. These works also provided one of the foundations for\u00a0Isaac Newton&#8217;s theory of\u00a0universal gravitation.<\/p>\n<p>During his career, Kepler was a mathematics teacher at a\u00a0seminary\u00a0school in\u00a0Graz,\u00a0Austria, where he became an associate of\u00a0Prince Hans Ulrich von Eggenberg. Later he became an assistant to astronomer\u00a0Tycho Brahe, and eventually the imperial mathematician to\u00a0Emperor Rudolf II\u00a0and his two successors\u00a0Matthias\u00a0and\u00a0Ferdinand II. He was also a mathematics teacher in\u00a0Linz, Austria, and an adviser to\u00a0General Wallenstein. Additionally, he did fundamental work in the field of\u00a0optics, invented an improved version of the\u00a0refracting telescope\u00a0(the\u00a0Keplerian Telescope), and mentioned the\u00a0telescopic\u00a0discoveries of his contemporary\u00a0Galileo Galilei.<\/p>\n<div id='gallery-1' class='gallery galleryid-194 gallery-columns-3 gallery-size-thumbnail'><figure class='gallery-item'>\n\t\t\t<div class='gallery-icon portrait'>\n\t\t\t\t<a href='http:\/\/theperihelioneffect.com\/johannes-kepler\/kepler-solar-system-1\/'><img width=\"150\" height=\"150\" src=\"http:\/\/theperihelioneffect.com\/wp-content\/uploads\/2015\/10\/Kepler-solar-system-1-150x150.png\" class=\"attachment-thumbnail size-thumbnail\" alt=\"\" decoding=\"async\" \/><\/a>\n\t\t\t<\/div><\/figure><figure class='gallery-item'>\n\t\t\t<div class='gallery-icon landscape'>\n\t\t\t\t<a href='http:\/\/theperihelioneffect.com\/johannes-kepler\/great_comet_of_1577\/'><img width=\"150\" height=\"150\" src=\"http:\/\/theperihelioneffect.com\/wp-content\/uploads\/2015\/10\/Great_Comet_of_1577-150x150.gif\" class=\"attachment-thumbnail size-thumbnail\" alt=\"\" decoding=\"async\" \/><\/a>\n\t\t\t<\/div><\/figure><figure class='gallery-item'>\n\t\t\t<div class='gallery-icon landscape'>\n\t\t\t\t<a href='http:\/\/theperihelioneffect.com\/johannes-kepler\/kepler-solar-system-2\/'><img width=\"150\" height=\"150\" src=\"http:\/\/theperihelioneffect.com\/wp-content\/uploads\/2015\/10\/Kepler-solar-system-2-150x150.png\" class=\"attachment-thumbnail size-thumbnail\" alt=\"\" decoding=\"async\" \/><\/a>\n\t\t\t<\/div><\/figure>\n\t\t<\/div>\n\n<p>Kepler lived in an era when there was no clear distinction between astronomy and astrology, but there was a strong division between astronomy (a branch of\u00a0mathematics\u00a0within the\u00a0liberal arts) and\u00a0physics\u00a0(a branch of\u00a0natural philosophy). Kepler also incorporated religious arguments and reasoning into his work, motivated by the religious conviction and belief that God had created the world according to an intelligible plan that is accessible through the natural light of\u00a0reason.<sup id=\"cite_ref-1\" class=\"reference\">[1]<\/sup>\u00a0Kepler described his new astronomy as &#8220;celestial physics&#8221;,<sup id=\"cite_ref-2\" class=\"reference\">[2]<\/sup>\u00a0as &#8220;an excursion into\u00a0Aristotle&#8217;s\u00a0<i>Metaphysics<\/i>&#8220;,<sup id=\"cite_ref-3\" class=\"reference\">[3]<\/sup>\u00a0and as &#8220;a supplement to Aristotle&#8217;s\u00a0<i>On the Heavens<\/i>&#8220;,<sup id=\"cite_ref-4\" class=\"reference\">[4]<\/sup>\u00a0transforming the ancient tradition of physical cosmology by treating astronomy as part of a universal mathematical physics.<sup id=\"cite_ref-5\" class=\"reference\">[5]<\/sup><\/p>\n<p><a href=\"http:\/\/theperihelioneffect.com\/uncategorized\/keplers-law-question\/\">Kepler&#8217;s 3 Laws<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Johannes Kepler\u00a0(December 27, 1571\u00a0\u2013 November 15, 1630) was a\u00a0German\u00a0mathematician,\u00a0astronomer, and\u00a0astrologer. A key figure in the 17th century\u00a0scientific revolution, he is best known for his\u00a0laws of planetary motion, based on his works\u00a0Astronomia nova,\u00a0Harmonices Mundi, and\u00a0Epitome of Copernican Astronomy. These works also provided one of the foundations for\u00a0Isaac Newton&#8217;s theory of\u00a0universal gravitation. During his career, Kepler was &hellip;<\/p>\n<p class=\"read-more\"> <a class=\"\" href=\"http:\/\/theperihelioneffect.com\/johannes-kepler\/\"> <span class=\"screen-reader-text\">Johannes Kepler<\/span> Read More &raquo;<\/a><\/p>\n","protected":false},"author":2,"featured_media":46,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_exactmetrics_skip_tracking":false,"_exactmetrics_sitenote_active":false,"_exactmetrics_sitenote_note":"","_exactmetrics_sitenote_category":0,"site-sidebar-layout":"default","site-content-layout":"default","ast-site-content-layout":"","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"disabled","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""}}},"categories":[14],"tags":[4],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v21.8.1 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Johannes Kepler - The Perihelion Effect<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"http:\/\/theperihelioneffect.com\/johannes-kepler\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Johannes Kepler - The Perihelion Effect\" \/>\n<meta property=\"og:description\" content=\"Johannes Kepler\u00a0(December 27, 1571\u00a0\u2013 November 15, 1630) was a\u00a0German\u00a0mathematician,\u00a0astronomer, and\u00a0astrologer. A key figure in the 17th century\u00a0scientific revolution, he is best known for his\u00a0laws of planetary motion, based on his works\u00a0Astronomia nova,\u00a0Harmonices Mundi, and\u00a0Epitome of Copernican Astronomy. These works also provided one of the foundations for\u00a0Isaac Newton&#8217;s theory of\u00a0universal gravitation. 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