{"id":19130,"date":"2022-05-03T17:48:47","date_gmt":"2022-05-03T17:48:47","guid":{"rendered":"https:\/\/www.africa-press.net\/cameroun\/politique\/cette-animation-met-les-astres-du-systeme-solaire-a-lechelle-reelle"},"modified":"2022-05-03T18:20:09","modified_gmt":"2022-05-03T18:20:09","slug":"cette-animation-met-les-astres-du-systeme-solaire-a-lechelle-reelle","status":"publish","type":"post","link":"https:\/\/www.africa-press.net\/cameroun\/toutes-les-actualites\/cette-animation-met-les-astres-du-systeme-solaire-a-lechelle-reelle","title":{"rendered":"Cette animation met les astres du syst\u00e8me solaire \u00e0 l\u2019\u00e9chelle r\u00e9elle"},"content":{"rendered":"<p><span style=\"color: #ff6600\"><strong>Africa-Press &#8211; Cameroun. <\/strong><\/span>Pas facile de se repr\u00e9senter les diff\u00e9rences de taille entre les principaux objets du syst\u00e8me solaire, de la petite C\u00e9r\u00e8s au gigantesque Soleil. Cette animation r\u00e9ussit \u00e0 les mettre \u00e0 l\u2019\u00e9chelle en taille, vitesse de rotation et inclinaison.<\/p>\n<p>Le syst\u00e8me solaire est immense, si bien qu\u2019il s\u2019av\u00e8re complexe \u00e0 repr\u00e9senter correctement. Comment repr\u00e9senter les objets qui le composent \u00e0 la bonne \u00e9chelle, afin de mieux rendre compte de la diff\u00e9rence de taille entre, par exemple, notre Lune et l\u2019imposant Soleil ?<\/p>\n<p>Une animation, diffus\u00e9e le 26 avril 2022 par le plan\u00e9tologue James O\u2019Donoghue sur Twitter, aide \u00e0 mieux se l\u2019imaginer. Le scientifique a fait le choix d\u2019y repr\u00e9senter divers objets c\u00e9lestes \u00ab \u00e0 l\u2019\u00e9chelle en taille, en vitesse de rotation et en inclinaison \u00bb \u2014 les astres ne sont donc pas repr\u00e9sent\u00e9s en tenant compte de la v\u00e9ritable distance qui les s\u00e9pare dans le syst\u00e8me solaire. Ils sont anim\u00e9s les uns \u00e0 c\u00f4t\u00e9 des autres.<\/p>\n<p><b>Farandole de plan\u00e8tes naines, de plan\u00e8tes et de la Lune devant le Soleil<\/b><\/p>\n<p>Au d\u00e9but de cette animation, on retrouve les plus petits astres repr\u00e9sent\u00e9s, \u00e0 savoir : les plan\u00e8tes naines C\u00e9r\u00e8s et Pluton, la Lune, les plan\u00e8tes rocheuses Mars, V\u00e9nus, Terre, puis les g\u00e9antes de glace Neptune, Uranus, les g\u00e9antes gazeuses Saturne, Jupiter, et enfin notre \u00e9toile, le Soleil.<\/p>\n<p>Cette comparaison, en plus de rendre visibles les diff\u00e9rences notables de taille, permet aussi de voir d\u2019autres d\u00e9tails. Cela montre, par exemple, \u00e0 quel point Jupiter tourne vite sur elle-m\u00eame. Un jour sur Jupiter ne dure que 9 heures et 56 minutes. C\u2019est tout simplement la plan\u00e8te la plus grande (elle est 11 fois plus grosse que la Terre) et la plus rapide de tout le syst\u00e8me solaire.<\/p>\n<p>\u00c9videmment, tous les corps composant le syst\u00e8me solaire n\u2019ont pas pu \u00eatre repr\u00e9sent\u00e9s ici. On comprend que cela aurait rendu l\u2019animation illisible : rien que pour les lunes, par exemple, il y en a plus de 200 connues dans le syst\u00e8me solaire. On ne voit pas non plus ici les nombreux ast\u00e9ro\u00efdes et com\u00e8tes qui \u00e9voluent autour de l\u2019\u00e9toile.<\/p>\n<p><strong>Pour plus d&rsquo;informations et d&rsquo;analyses sur la <a href=\"https:\/\/www.africa-press.net\/cameroun\">Cameroun<\/a>, suivez <a href=\"https:\/\/www.africa-press.net\/\">Africa-Press<\/a><\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Africa-Press &#8211; Cameroun. Pas facile de se repr\u00e9senter les diff\u00e9rences de taille entre les principaux objets du syst\u00e8me solaire, de la petite C\u00e9r\u00e8s au gigantesque Soleil. Cette animation r\u00e9ussit \u00e0 les mettre \u00e0 l\u2019\u00e9chelle en taille, vitesse de rotation et inclinaison. Le syst\u00e8me solaire est immense, si bien qu\u2019il s\u2019av\u00e8re complexe \u00e0 repr\u00e9senter correctement. Comment [&hellip;]<\/p>\n","protected":false},"author":82,"featured_media":19129,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[22,11,10],"tags":[36,50,49],"class_list":["post-19130","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-divers","category-homepage-french","category-toutes-les-actualites","tag-africa-press","tag-africa-press-cameroun","tag-cameroun"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v26.1 (Yoast SEO v27.0) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Cette animation met les astres du syst\u00e8me solaire \u00e0 l\u2019\u00e9chelle r\u00e9elle - Cameroun<\/title>\n<meta name=\"description\" content=\"Pas facile de se repr\u00e9senter les diff\u00e9rences de taille entre les principaux objets du syst\u00e8me solaire, de la petite C\u00e9r\u00e8 ...\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.africa-press.net\/cameroun\/toutes-les-actualites\/cette-animation-met-les-astres-du-systeme-solaire-a-lechelle-reelle\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Cette animation met les astres du syst\u00e8me solaire \u00e0 l\u2019\u00e9chelle r\u00e9elle\" \/>\n<meta property=\"og:description\" content=\"Pas facile de se repr\u00e9senter les diff\u00e9rences de taille entre les principaux objets du syst\u00e8me solaire, de la petite C\u00e9r\u00e8 ...\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.africa-press.net\/cameroun\/toutes-les-actualites\/cette-animation-met-les-astres-du-systeme-solaire-a-lechelle-reelle\" \/>\n<meta property=\"og:site_name\" content=\"Cameroun\" \/>\n<meta property=\"article:published_time\" content=\"2022-05-03T17:48:47+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2022-05-03T18:20:09+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/static.africa-press.net\/cameroun\/sites\/57\/2022\/05\/img-627172369fdd7.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1440\" \/>\n\t<meta property=\"og:image:height\" content=\"904\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"cfeditorfr\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u00c9crit par\" \/>\n\t<meta name=\"twitter:data1\" content=\"cfeditorfr\" \/>\n\t<meta name=\"twitter:label2\" content=\"Dur\u00e9e de lecture estim\u00e9e\" \/>\n\t<meta name=\"twitter:data2\" content=\"2 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/www.africa-press.net\/cameroun\/toutes-les-actualites\/cette-animation-met-les-astres-du-systeme-solaire-a-lechelle-reelle#article\",\"isPartOf\":{\"@id\":\"https:\/\/www.africa-press.net\/cameroun\/toutes-les-actualites\/cette-animation-met-les-astres-du-systeme-solaire-a-lechelle-reelle\"},\"author\":{\"name\":\"cfeditorfr\",\"@id\":\"https:\/\/www.africa-press.net\/cameroun\/#\/schema\/person\/2b1cf3cd81a31e3cd26889ca66d677f1\"},\"headline\":\"Cette animation met les astres du syst\u00e8me solaire \u00e0 l\u2019\u00e9chelle r\u00e9elle\",\"datePublished\":\"2022-05-03T17:48:47+00:00\",\"dateModified\":\"2022-05-03T18:20:09+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/www.africa-press.net\/cameroun\/toutes-les-actualites\/cette-animation-met-les-astres-du-systeme-solaire-a-lechelle-reelle\"},\"wordCount\":408,\"commentCount\":0,\"image\":{\"@id\":\"https:\/\/www.africa-press.net\/cameroun\/toutes-les-actualites\/cette-animation-met-les-astres-du-systeme-solaire-a-lechelle-reelle#primaryimage\"},\"thumbnailUrl\":\"https:\/\/static.africa-press.net\/cameroun\/sites\/57\/2022\/05\/img-627172369fdd7.jpg\",\"keywords\":[\"Africa Press\",\"Africa Press-Cameroun\",\"Cameroun\"],\"articleSection\":[\"Divers\",\"homepage-french\",\"Toutes les actualit\u00e9s\"],\"inLanguage\":\"fr-FR\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\/\/www.africa-press.net\/cameroun\/toutes-les-actualites\/cette-animation-met-les-astres-du-systeme-solaire-a-lechelle-reelle#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.africa-press.net\/cameroun\/toutes-les-actualites\/cette-animation-met-les-astres-du-systeme-solaire-a-lechelle-reelle\",\"url\":\"https:\/\/www.africa-press.net\/cameroun\/toutes-les-actualites\/cette-animation-met-les-astres-du-systeme-solaire-a-lechelle-reelle\",\"name\":\"Cette animation met les astres du syst\u00e8me solaire \u00e0 l\u2019\u00e9chelle r\u00e9elle - 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