{"id":24110,"date":"2026-10-01T21:18:47","date_gmt":"2026-10-01T19:18:47","guid":{"rendered":"https:\/\/reperes-astro.fr\/?p=24110"},"modified":"2026-10-01T21:23:50","modified_gmt":"2026-10-01T19:23:50","slug":"lastronomie-de-octobre-2026","status":"publish","type":"post","link":"https:\/\/reperes-astro.fr\/lastronomie-de-octobre-2026\/","title":{"rendered":"L\u2019Astronomie de Octobre 2026"},"content":{"rendered":"<div class=\"wp-block-image\">\n<figure class=\"alignright size-medium is-resized\"><a href=\"https:\/\/reperes-astro.fr\/%77%70%2d%63%6f%6e%74%65%6e%74\/uploads\/2026\/10\/Capture-decran-2026-10-01-211518.jpg\"><img loading=\"lazy\" decoding=\"async\" width=\"234\" height=\"300\" src=\"https:\/\/reperes-astro.fr\/%77%70%2d%63%6f%6e%74%65%6e%74\/uploads\/2026\/10\/Capture-decran-2026-10-01-211518-234x300.jpg\" alt=\"L\u2019Astronomie de Octobre 2026\" class=\"wp-image-24190\" style=\"aspect-ratio:3\/4;object-fit:cover;object-position:34% 20%;width:180px;height:auto\" srcset=\"https:\/\/reperes-astro.fr\/%77%70%2d%63%6f%6e%74%65%6e%74\/uploads\/2026\/10\/Capture-decran-2026-10-01-211518-234x300.jpg 234w, https:\/\/reperes-astro.fr\/%77%70%2d%63%6f%6e%74%65%6e%74\/uploads\/2026\/10\/Capture-decran-2026-10-01-211518.jpg 645w\" sizes=\"auto, (max-width: 234px) 100vw, 234px\" \/><\/a><\/figure>\n<\/div>\n\n\n<p class=\"wp-block-paragraph\">Voici ce que vous trouverez au sommaire de l\u2019Astronomie de Octobre 2026&nbsp;:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Une livraison toujours aussi vari\u00e9e ce mois-ci&nbsp;! Que l\u2019on en juge&nbsp;:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>En premier lieu on pourra lire un article sur le bassin issu de la dislocation du sol de l\u2019Antarctique tel que mis en \u00e9vidence par des chercheurs de l\u2019Universit\u00e9 de G\u00eanes,<\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Suivi d\u2019une \u00e9tude des min\u00e9raux pr\u00e9sents dans les grains de Ryugu et Bennu, qui par leur anciennet\u00e9 de 4,5 milliards d\u2019ann\u00e9es aident \u00e0 comprendre la formation du syst\u00e8me solaire.<\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Vient un expos\u00e9 de l\u2019analyse spectrale de l\u2019atmosph\u00e8re de l\u2019exoplan\u00e8te WD1856b, Jupiter chaude en orbite autour d\u2019une naine blanche. Les donn\u00e9es ont \u00e9t\u00e9 collect\u00e9es gr\u00e2ce \u00e0 l\u2019instrument <a href=\"https:\/\/www.jwst.fr\/2021\/02\/nirspec\/\">NIRspecPRISM<\/a> du JWST.<\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Puis James Lequeux nous r\u00e9v\u00e8le comment de l\u2019\u00e9toile S301 tr\u00e8s proche du trou noir central de notre galaxie pourrait permettre, par recours aux m\u00e9thodes issues de la relativit\u00e9 g\u00e9n\u00e9rale, de conna\u00eetre la vitesse de rotation de ce trou noir.<\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Vient une pr\u00e9sentation des galaxies primordiales, c\u2019est-\u00e0-dire les plus anciennes et \u00e9loign\u00e9es, apparues entre 300 et 500 millions d\u2019ann\u00e9es apr\u00e8s le Big Bang. Une \u00e9tude r\u00e9cente r\u00e9v\u00e8le qu\u2019elles sont beaucoup plus diverses qu\u2019on ne le pensait jusqu\u2019\u00e0 pr\u00e9sent.<\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Vous pourrez ensuite lire un bilan de dix ans de la mission <a href=\"https:\/\/fr.wikipedia.org\/wiki\/Programme_ExoMars\">ExoMArs TGO<\/a>, sonde charg\u00e9e d\u2019\u00e9tudier l\u2019atmosph\u00e8re de la plan\u00e8te rouge.<\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Th\u00e9r\u00e8se Encrenaz de l\u2019observatoire de Paris PSL dresse quant \u00e0 elle la liste des t\u00e9lescopes de la montagne Mauna Kea de la grande \u00eele d\u2019Hawa\u00ef,<\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Et Justine Hrycko, Professeur \u00e0 la Sorbonne, nous relate l\u2019histoire des supputations li\u00e9es aux canaux martiens, de Secchi et Schiaparelli \u00e0 Lowell en passant par Flammarion, sans oublier la Guerre des Mondes de H.G. Wells.<\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Apr\u00e8s la suite de la BD commenc\u00e9e le mois dernier, une fiche pratique est consacr\u00e9e \u00e0 la n\u00e9buleuse du croissant.<\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Et enfin, apr\u00e8s les \u00e9ph\u00e9m\u00e9rides et un album photo de l\u2019\u00e9clipse du mois d\u2019ao\u00fbt, Christophe Marion de la commission des cadrans solaires de la SAF nous explique l\u2019histoire de l\u2019heure d\u2019hiver et de l\u2019heure d\u2019\u00e9t\u00e9.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">C\u2019est l\u2019occasion de red\u00e9couvrir l\u2019heure solaire gr\u00e2ce \u00e0 son invention, le <a href=\"https:\/\/lecadranier.com\/fabriquez-votre-propre-papophoplon\/\"><strong>papophoplon<\/strong><\/a>, que vous pouvez concevoir et param\u00e9trer gr\u00e2ce \u00e0 l\u2019application <a href=\"https:\/\/www.geogebra.org\/?lang=fr\"><strong>Geogebra<\/strong><\/a>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Retrouvez tous les num\u00e9ros et abonnez-vous directement sur le site :&nbsp;<strong><a href=\"https:\/\/lastronomie.fr\/\" target=\"_blank\" rel=\"noopener\">https:\/\/lastronomie.fr\/<\/a><\/strong><\/p>\n<div class=\"pvc_clear\"><\/div><p id=\"pvc_stats_24110\" class=\"pvc_stats all  \" data-element-id=\"24110\" style=\"\"><i class=\"pvc-stats-icon medium\" aria-hidden=\"true\"><svg aria-hidden=\"true\" focusable=\"false\" data-prefix=\"far\" data-icon=\"chart-bar\" role=\"img\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 512 512\" class=\"svg-inline--fa fa-chart-bar fa-w-16 fa-2x\"><path fill=\"currentColor\" d=\"M396.8 352h22.4c6.4 0 12.8-6.4 12.8-12.8V108.8c0-6.4-6.4-12.8-12.8-12.8h-22.4c-6.4 0-12.8 6.4-12.8 12.8v230.4c0 6.4 6.4 12.8 12.8 12.8zm-192 0h22.4c6.4 0 12.8-6.4 12.8-12.8V140.8c0-6.4-6.4-12.8-12.8-12.8h-22.4c-6.4 0-12.8 6.4-12.8 12.8v198.4c0 6.4 6.4 12.8 12.8 12.8zm96 0h22.4c6.4 0 12.8-6.4 12.8-12.8V204.8c0-6.4-6.4-12.8-12.8-12.8h-22.4c-6.4 0-12.8 6.4-12.8 12.8v134.4c0 6.4 6.4 12.8 12.8 12.8zM496 400H48V80c0-8.84-7.16-16-16-16H16C7.16 64 0 71.16 0 80v336c0 17.67 14.33 32 32 32h464c8.84 0 16-7.16 16-16v-16c0-8.84-7.16-16-16-16zm-387.2-48h22.4c6.4 0 12.8-6.4 12.8-12.8v-70.4c0-6.4-6.4-12.8-12.8-12.8h-22.4c-6.4 0-12.8 6.4-12.8 12.8v70.4c0 6.4 6.4 12.8 12.8 12.8z\" class=\"\"><\/path><\/svg><\/i> <img loading=\"lazy\" decoding=\"async\" width=\"16\" height=\"16\" alt=\"Loading\" src=\"https:\/\/reperes-astro.fr\/%77%70%2d%63%6f%6e%74%65%6e%74\/plugins\/page-views-count\/ajax-loader-2x.gif\" border=0 \/><\/p><div class=\"pvc_clear\"><\/div>","protected":false},"excerpt":{"rendered":"<p>Voici ce que vous trouverez au sommaire de l\u2019Astronomie de Octobre 2026&nbsp;: Une livraison toujours aussi vari\u00e9e ce mois-ci&nbsp;! Que l\u2019on&#46;&#46;&#46;<\/p>\n<div class=\"pvc_clear\"><\/div>\n<p id=\"pvc_stats_24110\" class=\"pvc_stats all  \" data-element-id=\"24110\" style=\"\"><i class=\"pvc-stats-icon medium\" aria-hidden=\"true\"><svg aria-hidden=\"true\" focusable=\"false\" data-prefix=\"far\" data-icon=\"chart-bar\" role=\"img\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 512 512\" class=\"svg-inline--fa fa-chart-bar fa-w-16 fa-2x\"><path fill=\"currentColor\" d=\"M396.8 352h22.4c6.4 0 12.8-6.4 12.8-12.8V108.8c0-6.4-6.4-12.8-12.8-12.8h-22.4c-6.4 0-12.8 6.4-12.8 12.8v230.4c0 6.4 6.4 12.8 12.8 12.8zm-192 0h22.4c6.4 0 12.8-6.4 12.8-12.8V140.8c0-6.4-6.4-12.8-12.8-12.8h-22.4c-6.4 0-12.8 6.4-12.8 12.8v198.4c0 6.4 6.4 12.8 12.8 12.8zm96 0h22.4c6.4 0 12.8-6.4 12.8-12.8V204.8c0-6.4-6.4-12.8-12.8-12.8h-22.4c-6.4 0-12.8 6.4-12.8 12.8v134.4c0 6.4 6.4 12.8 12.8 12.8zM496 400H48V80c0-8.84-7.16-16-16-16H16C7.16 64 0 71.16 0 80v336c0 17.67 14.33 32 32 32h464c8.84 0 16-7.16 16-16v-16c0-8.84-7.16-16-16-16zm-387.2-48h22.4c6.4 0 12.8-6.4 12.8-12.8v-70.4c0-6.4-6.4-12.8-12.8-12.8h-22.4c-6.4 0-12.8 6.4-12.8 12.8v70.4c0 6.4 6.4 12.8 12.8 12.8z\" class=\"\"><\/path><\/svg><\/i> <img loading=\"lazy\" decoding=\"async\" width=\"16\" height=\"16\" alt=\"Loading\" src=\"https:\/\/reperes-astro.fr\/%77%70%2d%63%6f%6e%74%65%6e%74\/plugins\/page-views-count\/ajax-loader-2x.gif\" border=0 \/><\/p>\n<div class=\"pvc_clear\"><\/div>\n","protected":false},"author":14,"featured_media":24189,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[61,63,49],"tags":[],"class_list":["post-24110","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-cosmologie","category-espace","category-informations-a-destination-des-enseignants-et-des-animateurs"],"a3_pvc":{"activated":true,"total_views":5,"today_views":4},"yoast_head":"<title>L\u2019Astronomie de Octobre 2026 - Rep\u00e8res Astro<\/title>\n<meta name=\"description\" content=\"Voici ce que vous trouverez au sommaire de l\u2019Astronomie de Octobre 2026\u00a0: Une livraison toujours aussi vari\u00e9e ce mois-ci\u00a0!\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/reperes-astro.fr\/lastronomie-de-octobre-2026\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"L\u2019Astronomie de Octobre 2026 - Rep\u00e8res Astro\" \/>\n<meta property=\"og:description\" content=\"Voici ce que vous trouverez au sommaire de l\u2019Astronomie de Octobre 2026\u00a0: Une livraison toujours aussi vari\u00e9e ce mois-ci\u00a0!\" \/>\n<meta property=\"og:url\" content=\"https:\/\/reperes-astro.fr\/lastronomie-de-octobre-2026\/\" \/>\n<meta property=\"og:site_name\" content=\"Rep\u00e8res Astro\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/AssoReperesAstro\/?locale=fr_FRrplanetarium\" \/>\n<meta property=\"article:published_time\" content=\"2026-10-01T19:18:47+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2026-10-01T19:23:50+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/reperes-astro.fr\/%77%70%2d%63%6f%6e%74%65%6e%74\/uploads\/2026\/10\/Capture-decran-2026-10-01-211326.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"647\" \/>\n\t<meta property=\"og:image:height\" content=\"220\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Axel Guillerand\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u00c9crit par\" \/>\n\t<meta name=\"twitter:data1\" content=\"Axel Guillerand\" \/>\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:\\\/\\\/reperes-astro.fr\\\/lastronomie-de-octobre-2026\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/reperes-astro.fr\\\/lastronomie-de-octobre-2026\\\/\"},\"author\":{\"name\":\"Axel Guillerand\",\"@id\":\"https:\\\/\\\/reperes-astro.fr\\\/#\\\/schema\\\/person\\\/63a42a145e25940d630b542b05dc9b3e\"},\"headline\":\"L\u2019Astronomie de Octobre 2026\",\"datePublished\":\"2026-10-01T19:18:47+00:00\",\"dateModified\":\"2026-10-01T19:23:50+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/reperes-astro.fr\\\/lastronomie-de-octobre-2026\\\/\"},\"wordCount\":439,\"publisher\":{\"@id\":\"https:\\\/\\\/reperes-astro.fr\\\/#organization\"},\"image\":{\"@id\":\"https:\\\/\\\/reperes-astro.fr\\\/lastronomie-de-octobre-2026\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/reperes-astro.fr\\\/%77%70%2d%63%6f%6e%74%65%6e%74\\\/uploads\\\/2026\\\/10\\\/Capture-decran-2026-10-01-211326.jpg\",\"articleSection\":[\"Cosmologie\",\"Espace\",\"Publications\"],\"inLanguage\":\"fr-FR\"},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/reperes-astro.fr\\\/lastronomie-de-octobre-2026\\\/\",\"url\":\"https:\\\/\\\/reperes-astro.fr\\\/lastronomie-de-octobre-2026\\\/\",\"name\":\"L\u2019Astronomie de Octobre 2026 - 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