{"id":2906,"date":"2017-07-01T16:14:42","date_gmt":"2017-07-01T16:14:42","guid":{"rendered":"https:\/\/blogs.futura-sciences.com\/luminet\/?p=2906"},"modified":"2017-09-13T16:16:59","modified_gmt":"2017-09-13T16:16:59","slug":"revolution-copernicienne-chez-humanistes-provencaux-2-lapport-de-galilee","status":"publish","type":"post","link":"https:\/\/blogs.futura-sciences.com\/luminet\/2017\/07\/01\/revolution-copernicienne-chez-humanistes-provencaux-2-lapport-de-galilee\/","title":{"rendered":"La r\u00e9volution copernicienne chez les humanistes proven\u00e7aux (2) : L&#8217;apport de Galil\u00e9e"},"content":{"rendered":"<p style=\"text-align: justify\">Suite du <a href=\"https:\/\/blogs.futura-sciences.com\/luminet\/2017\/06\/12\/reception-de-revolution-copernicienne-humanistes-provencaux-1-montaigne\/\" target=\"_blank\" rel=\"noopener noreferrer\"><strong>billet pr\u00e9c\u00e9dent\u00a0: Montaigne<\/strong><\/a><\/p>\n<h4 style=\"text-align: justify\"><strong>La r\u00e9volution galil\u00e9enne<\/strong><\/h4>\n<p style=\"text-align: justify\">Au cours des soixante ann\u00e9es qui suivent la publication du <em>De revolutionibus<\/em>, seule une poign\u00e9e d\u2019astronomes r\u00e9partis en Europe mesurent l\u2019importance de la th\u00e8se copernicienne et s\u2019attachent \u00e0 la d\u00e9fendre, voire \u00e0 l\u2019adopter et \u00e0 l\u2019am\u00e9liorer\u00a0: <strong><a href=\"https:\/\/fr.wikipedia.org\/wiki\/William_Gilbert_(astronome)\">William Gilbert<\/a><\/strong> et <strong><a href=\"https:\/\/fr.wikipedia.org\/wiki\/Thomas_Digges\">Thomas Digges<\/a><\/strong> en Angleterre, Galileo Galilei dans la tr\u00e8s catholique Italie, <strong><a href=\"https:\/\/blogs.futura-sciences.com\/luminet\/2014\/02\/15\/hommage-rheticus\/\" target=\"_blank\" rel=\"noopener noreferrer\">Georg Joachim Rheticus<\/a><\/strong>, <a href=\"https:\/\/fr.wikipedia.org\/wiki\/Michael_Maestlin\"><strong>Michael Maestlin<\/strong><\/a>, Christophe Rothmann et Johannes Kepler en pays luth\u00e9riens. Ils doivent cependant faire face aux virulentes critiques adress\u00e9es \u00e0 la doctrine du double mouvement de la Terre, jug\u00e9e absurde. Reprenant l\u2019argumentation d\u2019Osiander, la majorit\u00e9 des savants de l\u2019\u00e9poque ne retiennent en effet de l\u2019\u0153uvre copernicienne que l\u2019ing\u00e9nieuse fiction math\u00e9matique permettant de faciliter et d\u2019am\u00e9liorer les calculs d\u2019\u00e9ph\u00e9m\u00e9rides c\u00e9lestes. En t\u00e9moignent les nouvelles tables astronomiques dites <em>Prut\u00e9niques,<\/em> \u00e9labor\u00e9es en 1551 par Erasmus Reinhold et s\u2019appuyant sur la th\u00e9orie h\u00e9liocentrique, qui s\u2019av\u00e8rent l\u00e9g\u00e8rement sup\u00e9rieures aux s\u00e9culaires <em>Tables Alphonsines<\/em> fond\u00e9es sur le syst\u00e8me g\u00e9ocentrique de Ptol\u00e9m\u00e9e.<\/p>\n<p style=\"text-align: justify\"><a href=\"https:\/\/blogs.futura-sciences.com\/luminet\/wp-content\/uploads\/sites\/2\/2017\/06\/reinhold-tables.jpg\" rel=\"lightbox[2906]\"><img loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-2932 aligncenter\" src=\"https:\/\/blogs.futura-sciences.com\/luminet\/wp-content\/uploads\/sites\/2\/2017\/06\/reinhold-tables-269x450.jpg\" alt=\"\" width=\"269\" height=\"450\" srcset=\"https:\/\/blogs.futura-sciences.com\/luminet\/wp-content\/uploads\/sites\/2\/2017\/06\/reinhold-tables-269x450.jpg 269w, https:\/\/blogs.futura-sciences.com\/luminet\/wp-content\/uploads\/sites\/2\/2017\/06\/reinhold-tables.jpg 400w\" sizes=\"auto, (max-width: 269px) 100vw, 269px\" \/><\/a><\/p>\n<p style=\"text-align: justify\">Ce sentiment de d\u00e9fiance est confort\u00e9 par le Danois Tycho Brah\u00e9 (1546-1601), le plus c\u00e9l\u00e8bre astronome de son temps r\u00e9put\u00e9 pour l\u2019extr\u00eame qualit\u00e9 de ses observations. S\u2019il admire l\u2019\u0153uvre du chanoine polonais, il ne peut en aucune mani\u00e8re adh\u00e9rer au g\u00e9ocin\u00e9tisme, raison pour laquelle il propose en 1583 un mod\u00e8le dit g\u00e9o-h\u00e9liocentrique, syst\u00e8me mixte dans lequel la Terre est immobile, la Lune, le Soleil et les \u00e9toiles fixes tournent autour d\u2019elle, mais les cinq plan\u00e8tes tournent autour du Soleil. Ce confortable et astucieux compromis, qui lui permet de rester fid\u00e8le aux principes de la physique aristot\u00e9licienne et \u00e0 l\u2019interpr\u00e9tation th\u00e9ologique de la Bible, recueille rapidement l\u2019aval de la majorit\u00e9 des astronomes, des philosophes et des th\u00e9ologiens de l\u2019\u00e9poque, qu\u2019ils soient catholiques ou r\u00e9form\u00e9s.<!--more--><\/p>\n<figure id=\"attachment_2933\" aria-describedby=\"caption-attachment-2933\" style=\"width: 450px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/blogs.futura-sciences.com\/luminet\/wp-content\/uploads\/sites\/2\/2017\/06\/urani_paint_c60.jpg\" rel=\"lightbox[2906]\"><img loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-2933\" src=\"https:\/\/blogs.futura-sciences.com\/luminet\/wp-content\/uploads\/sites\/2\/2017\/06\/urani_paint_c60-450x443.jpg\" alt=\"\" width=\"450\" height=\"443\" srcset=\"https:\/\/blogs.futura-sciences.com\/luminet\/wp-content\/uploads\/sites\/2\/2017\/06\/urani_paint_c60-450x443.jpg 450w, https:\/\/blogs.futura-sciences.com\/luminet\/wp-content\/uploads\/sites\/2\/2017\/06\/urani_paint_c60.jpg 600w\" sizes=\"auto, (max-width: 450px) 100vw, 450px\" \/><\/a><figcaption id=\"caption-attachment-2933\" class=\"wp-caption-text\">Uraniborg, le Palais-Observatoire de Tycho Brahe sur l&#8217;\u00eele de Hven<\/figcaption><\/figure>\n<p style=\"text-align: justify\">C\u2019est alors qu\u2019en 1610 Galileo Galilei, qui jusqu\u2019alors n\u2019osait enseigner l\u2019astronomie copernicienne, publie son <em>Sidereus Nuncius<\/em> dans lequel il expose les r\u00e9sultats de ses observations effectu\u00e9es \u00e0 la lunette. Tous sont en contradiction avec les dogmes de la physique aristot\u00e9licienne\u00a0: la Lune a du relief, tout comme la Terre\u00a0; le Soleil, couvert de taches, est imparfait\u00a0; V\u00e9nus a des phases\u00a0; Jupiter est au centre d\u2019un syst\u00e8me de quatre lunes\u00a0; les \u00e9toiles sont beaucoup plus nombreuses que celles visibles \u00e0 l\u2019\u0153il nu. Les implications des observations galil\u00e9ennes d\u00e9passent de loin le constat astronomique\u00a0: elles remettent sur le devant de la sc\u00e8ne la d\u00e9rangeante doctrine de Copernic, d\u2019autant que dans sa correspondance publique, Galil\u00e9e se met \u00e0 d\u00e9fendre le g\u00e9ocin\u00e9tisme contre les attaques des th\u00e9ologiens.<\/p>\n<p style=\"text-align: justify\">Les autorit\u00e9s eccl\u00e9siastiques r\u00e9agissent par une premi\u00e8re proc\u00e9dure judiciaire contre Galil\u00e9e, au terme de laquelle la doctrine de Copernic est jug\u00e9e fausse car contraire \u00e0 l\u2019Ecriture sainte. Le texte de Copernic doit \u00eatre amend\u00e9, corrig\u00e9 afin de para\u00eetre inoffensif. Le puissant cardinal Bellarmin exhorte Galil\u00e9e \u00e0 ne pas soutenir l\u2019h\u00e9liocentrisme, mais il ne lui interdit pas l\u2019\u00e9tude du syst\u00e8me copernicien en tant que pure hypoth\u00e8se scientifique, sans aucune valeur de v\u00e9rit\u00e9 \u2013 cette derni\u00e8re ne pouvant \u00eatre d\u00e9livr\u00e9e que par les th\u00e9ologiens du Saint-Office.<\/p>\n<p style=\"text-align: justify\"><a href=\"https:\/\/blogs.futura-sciences.com\/luminet\/wp-content\/uploads\/sites\/2\/2017\/06\/dialogue-galilee.jpg\" rel=\"lightbox[2906]\"><img loading=\"lazy\" decoding=\"async\" class=\"alignright wp-image-2937\" src=\"https:\/\/blogs.futura-sciences.com\/luminet\/wp-content\/uploads\/sites\/2\/2017\/06\/dialogue-galilee-285x450.jpg\" alt=\"\" width=\"200\" height=\"316\" srcset=\"https:\/\/blogs.futura-sciences.com\/luminet\/wp-content\/uploads\/sites\/2\/2017\/06\/dialogue-galilee-285x450.jpg 285w, https:\/\/blogs.futura-sciences.com\/luminet\/wp-content\/uploads\/sites\/2\/2017\/06\/dialogue-galilee.jpg 443w\" sizes=\"auto, (max-width: 200px) 100vw, 200px\" \/><\/a>Le savant italien se montre relativement docile, mais en 1632, il publie son <em>Dialogo sopra i due massimi sistemi del mondo <\/em>dans lequel il ridiculise la conception aristot\u00e9licienne du monde, la th\u00e9orie g\u00e9ocentrique qui en d\u00e9coule et les penseurs qui y adh\u00e8rent, au premier rang desquels figurent les autorit\u00e9s eccl\u00e9siastiques. Adoptant d\u00e9finitivement le syst\u00e8me h\u00e9liocentrique, Galil\u00e9e n\u2019\u00e9nonce plus une hypoth\u00e8se\u00a0: il affirme une r\u00e9alit\u00e9.<\/p>\n<p style=\"text-align: justify\">Estimant qu\u2019il a trahi l\u2019accord de r\u00e9serve pass\u00e9 lors de son premier proc\u00e8s, la Congr\u00e9gation du Saint-Office lui impose d\u2019abjurer le 22\u00a0juin 1633, \u00ab pour avoir tenu et cru une doctrine fausse et contraire aux saintes et divines \u00c9critures, \u00e0 savoir que le Soleil est le centre du monde et qu\u2019il ne se meut pas d\u2019orient en occident, et que la Terre se meut et qu\u2019elle n\u2019est pas le centre du monde \u00bb<a href=\"#_edn1\" name=\"_ednref1\">[i]<\/a>. Le <em>Dialogo <\/em>est mis \u00e0 l\u2019Index, de m\u00eame que l\u2019<em>Epitome astronomiae copernicanae <\/em>de Kepler (condamn\u00e9 d\u00e8s 1619).<\/p>\n<figure id=\"attachment_2936\" aria-describedby=\"caption-attachment-2936\" style=\"width: 450px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/blogs.futura-sciences.com\/luminet\/wp-content\/uploads\/sites\/2\/2017\/06\/1857.galilee-paradisi.jpg\" rel=\"lightbox[2906]\"><img loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-2936\" src=\"https:\/\/blogs.futura-sciences.com\/luminet\/wp-content\/uploads\/sites\/2\/2017\/06\/1857.galilee-paradisi-450x300.jpg\" alt=\"\" width=\"450\" height=\"300\" srcset=\"https:\/\/blogs.futura-sciences.com\/luminet\/wp-content\/uploads\/sites\/2\/2017\/06\/1857.galilee-paradisi-450x300.jpg 450w, https:\/\/blogs.futura-sciences.com\/luminet\/wp-content\/uploads\/sites\/2\/2017\/06\/1857.galilee-paradisi.jpg 709w\" sizes=\"auto, (max-width: 450px) 100vw, 450px\" \/><\/a><figcaption id=\"caption-attachment-2936\" class=\"wp-caption-text\">Le proc\u00e8s de Galil\u00e9e, vu par Paradisi (1857)<\/figcaption><\/figure>\n<p style=\"text-align: justify\">D\u00e8s lors, la nouvelle astronomie copernicienne a du mal \u00e0 s\u2019imposer dans ses pays d\u2019origine. En Italie, Galil\u00e9e est sous la chape de l\u2019Inquisition. A Prague, Kepler perd son poste de <em>mathematicus<\/em> dans un empire romain germanique ravag\u00e9 par la Guerre de Trente Ans. En France, Ren\u00e9 Descartes (1596-1650), rendu prudent par la condamnation de Galil\u00e9e, renonce \u00e0 publier de son vivant son <em>Trait\u00e9 du monde et de la lumi\u00e8re,<\/em> dans lequel il d\u00e9fend la th\u00e8se du d\u00e9centrement h\u00e9liocentrique, allant m\u00eame au-del\u00e0 en supposant un espace infini au sein duquel chaque \u00e9toile est le centre d\u2019un \u00ab\u00a0tourbillon d\u2019\u00e9ther\u00a0\u00bb semblable \u00e0 notre syst\u00e8me solaire.<\/p>\n<p style=\"text-align: justify\">C\u2019est pourtant dans le Sud de la France que le flambeau de la nouvelle astronomie copernico-galil\u00e9enne va \u00eatre repris tout au long du XVII<sup>e<\/sup> si\u00e8cle, d\u2019abord par les deux grands humanistes proven\u00e7aux Nicolas-Claude Fabri de Peiresc (1580-1637) et Pierre Gassendi (1592-1655), puis port\u00e9e au sommet en la capitale de France par un astronome professionnel d\u2019origine \u00e9galement proven\u00e7ale, Jean-Dominique Cassini (1625 -1712).<\/p>\n<p style=\"text-align: justify\"><a href=\"#_ednref1\" name=\"_edn1\">[i]<\/a> Citation extraite de M.P. Lerner et al.\u00a0: Introduction au <em>Des R\u00e9volutions des Orbes C\u00e9lestes, <\/em>Les Belles Lettres<\/p>\n<p style=\"text-align: justify\"><span style=\"color: #003300\"><strong>Suite \u00e0 venir<\/strong><\/span><\/p>\n<!-- AddThis Advanced Settings generic via filter on the_content --><!-- AddThis Share Buttons generic via filter on the_content -->","protected":false},"excerpt":{"rendered":"<p>Suite du billet pr\u00e9c\u00e9dent\u00a0: Montaigne La r\u00e9volution galil\u00e9enne Au cours des soixante ann\u00e9es qui suivent la publication du De revolutionibus, seule une poign\u00e9e d\u2019astronomes r\u00e9partis en Europe mesurent l\u2019importance de la th\u00e8se copernicienne et s\u2019attachent \u00e0 la d\u00e9fendre, voire \u00e0 l\u2019adopter et \u00e0 l\u2019am\u00e9liorer\u00a0: William Gilbert et Thomas Digges en Angleterre, Galileo Galilei dans la &hellip; <a href=\"https:\/\/blogs.futura-sciences.com\/luminet\/2017\/07\/01\/revolution-copernicienne-chez-humanistes-provencaux-2-lapport-de-galilee\/\" class=\"more-link\">Continuer la lecture de <span class=\"screen-reader-text\">La r\u00e9volution copernicienne chez les humanistes proven\u00e7aux (2) : L&#8217;apport de Galil\u00e9e<\/span>  <span class=\"meta-nav\">&rarr;<\/span><\/a><!-- AddThis Advanced Settings generic via filter on get_the_excerpt --><!-- AddThis Share Buttons generic via filter on get_the_excerpt --><\/p>\n","protected":false},"author":2,"featured_media":2938,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","_links_to":"","_links_to_target":""},"categories":[58,14,27],"tags":[35,234,107,233],"class_list":["post-2906","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-astronomie","category-histoire-des-sciences-sciences","category-mes-publications","tag-copernic","tag-galilee","tag-kepler","tag-tycho-brahe"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.1 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>La r\u00e9volution copernicienne chez les humanistes proven\u00e7aux (2) : L&#039;apport de Galil\u00e9e, par Jean-Pierre Luminet<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/blogs.futura-sciences.com\/luminet\/2017\/07\/01\/revolution-copernicienne-chez-humanistes-provencaux-2-lapport-de-galilee\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"La r\u00e9volution copernicienne chez les humanistes proven\u00e7aux (2) : L&#039;apport de Galil\u00e9e, par Jean-Pierre Luminet\" \/>\n<meta property=\"og:description\" content=\"Suite du billet pr\u00e9c\u00e9dent\u00a0: Montaigne La r\u00e9volution galil\u00e9enne Au cours des soixante ann\u00e9es qui suivent la publication du De revolutionibus, seule une poign\u00e9e d\u2019astronomes r\u00e9partis en Europe mesurent l\u2019importance de la th\u00e8se copernicienne et s\u2019attachent \u00e0 la d\u00e9fendre, voire \u00e0 l\u2019adopter et \u00e0 l\u2019am\u00e9liorer\u00a0: William Gilbert et Thomas Digges en Angleterre, Galileo Galilei dans la &hellip; 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