{"id":3139,"date":"2026-10-12T16:54:39","date_gmt":"2026-10-12T14:54:39","guid":{"rendered":"https:\/\/smalltalks.eu\/blog\/?page_id=3139"},"modified":"2026-10-12T17:57:46","modified_gmt":"2026-10-12T15:57:46","slug":"astronomie","status":"publish","type":"page","link":"https:\/\/smalltalks.eu\/blog\/explorer\/sciences\/astronomie\/","title":{"rendered":"Astronomie"},"content":{"rendered":"\n<style>\n.stx{--l:#c9ced6;--m:#5b6573;font-size:16px;line-height:1.5}\n.stx a,.stx a:visited,.stx a:active,.stx a:focus{color:#14466b;text-decoration:none}.stx a:hover{color:#0a2a42;text-decoration:underline}\n.stx ol.tl a,.stx ul.lst a{font-weight:600}.stx .era h2{color:#212121}\n.stx .crumb{font-size:13px;color:var(--m);margin-bottom:1.2em}.stx .crumb a,.stx .crumb a:visited{color:var(--m)}\n.stx .cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(210px,1fr));gap:14px;margin:1em 0 2em}\n.stx .card{border:1px solid var(--l);border-radius:8px;padding:12px 14px;background:#fff}\n.stx 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href=\"https:\/\/smalltalks.eu\/blog\/?page_id=2994\">Explorer le blog<\/a> \u203a <a href=\"https:\/\/smalltalks.eu\/blog\/?page_id=3131\">Sciences<\/a> \u203a Astronomie<\/div><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">Ici, l&#8217;astronomie commence au fond du jardin. En 2014, l&#8217;auteur observe le ciel avec ses enfants et d\u00e9couvre qu&#8217;il suffit de regarder : plan\u00e8tes, satellites de Jupiter, crat\u00e8res de la Lune. Suivent des photos prises \u00e0 l&#8217;iPhone, un t\u00e9lescope, et quelques vid\u00e9os qui changent d&#8217;\u00e9chelle.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Le parcours compte trois \u00e9tapes : le ciel \u00e0 l&#8217;\u0153il nu, l&#8217;observation instrument\u00e9e, puis la place de la Terre dans l&#8217;univers.<\/p>\n\n\n\n<div class=\"stx\"><ul class=\"lst\"><li><a href=\"#e1\">\u00c9tape 1 \u2014 Le ciel \u00e0 l&#8217;\u0153il nu<\/a><\/li><li><a href=\"#e2\">\u00c9tape 2 \u2014 Avec un instrument<\/a><\/li><li><a href=\"#e3\">\u00c9tape 3 \u2014 O\u00f9 sommes-nous ?<\/a><\/li><\/ul><\/div>\n\n\n\n<div class=\"stx\"><div class=\"era\" id=\"e1\" style=\"--c:#3c6b8b\"><h2>\u00c9tape 1 \u2014 Le ciel \u00e0 l&#8217;\u0153il nu<\/h2><p>Les plan\u00e8tes visibles \u00e0 l&#8217;\u0153il nu sont bien visibles, \u00e0 condition de lever les yeux. Ces observations d&#8217;amateur, publi\u00e9es sur Facebook entre 2014 et 2020, suivent leurs conjonctions au fil des saisons.<\/p><\/div><ul class=\"lst\"><li><a href=\"https:\/\/smalltalks.eu\/blog\/2014\/05\/04\/lever-le-nez-mai-2014\/\">Lever le nez (mai 2014)<\/a><br><span>Premi\u00e8res observations avec les enfants : Mars orang\u00e9e, les quatre satellites galil\u00e9ens de Jupiter, les d\u00e9tails de la Lune.<\/span><\/li><li><a href=\"https:\/\/smalltalks.eu\/blog\/2016\/08\/22\/mars-saturne-et-antares-aout-2016\/\">Mars, Saturne et Antar\u00e8s (ao\u00fbt 2016)<\/a><br><span>Mars et Saturne au sud-ouest, Antar\u00e8s un peu plus bas, \u00e0 travers un vieil iPhone.<\/span><\/li><li><a href=\"https:\/\/smalltalks.eu\/blog\/2017\/01\/20\/venus-et-mars-janvier-2017\/\">V\u00e9nus et Mars (janvier 2017)<\/a><br><span>Un ciel clair d&#8217;hiver : V\u00e9nus brillante, et Mars, discr\u00e8te, \u00e0 ses c\u00f4t\u00e9s.<\/span><\/li><li><a href=\"https:\/\/smalltalks.eu\/blog\/2020\/04\/14\/les-planetes-du-matin-avril-2020\/\">Les plan\u00e8tes du matin (avril 2020)<\/a><br><span>Avant le lever du Soleil : Mars, Saturne, Jupiter et la Lune align\u00e9s dans le ciel du matin.<\/span><\/li><\/ul><\/div>\n\n\n\n<div class=\"stx\"><div class=\"era\" id=\"e2\" style=\"--c:#3c6b8b\"><h2>\u00c9tape 2 \u2014 Avec un instrument<\/h2><p>Un t\u00e9lescope, une Lune photographi\u00e9e par un enfant, puis l&#8217;exploit d&#8217;un astronome amateur : observer demande du mat\u00e9riel, mais surtout de la pr\u00e9paration et de la patience.<\/p><\/div><ul class=\"lst\"><li><a href=\"https:\/\/smalltalks.eu\/blog\/2015\/08\/21\/le-telescope\/\">Le t\u00e9lescope<\/a><br><span>Un t\u00e9lescope sur sa monture, en attendant les premi\u00e8res \u00e9toiles (ao\u00fbt 2015).<\/span><\/li><li><a href=\"https:\/\/smalltalks.eu\/blog\/2016\/08\/07\/et-la-lune\/\">Et la Lune<\/a><br><span>Un croissant de Lune et ses crat\u00e8res, photographi\u00e9 par Wollef, le fils de l&#8217;auteur.<\/span><\/li><li><a href=\"https:\/\/smalltalks.eu\/blog\/2020\/09\/19\/la-station-spatiale-passe-devant-mars-tom-glenn\/\">La Station spatiale passe devant Mars (Tom Glenn)<\/a><br><span>La Station spatiale passe devant Mars : il fallait se placer sur une ligne large d&#8217;environ 90 m\u00e8tres au sol.<\/span><\/li><\/ul><\/div>\n\n\n\n<div class=\"stx\"><div class=\"era\" id=\"e3\" style=\"--c:#3c6b8b\"><h2>\u00c9tape 3 \u2014 O\u00f9 sommes-nous ?<\/h2><p>La Terre tourne, le Soleil file dans la galaxie, et notre galaxie appartient \u00e0 un superamas. Le mouvement est toujours relatif \u00e0 quelque chose : ces vid\u00e9os changent d&#8217;\u00e9chelle jusqu&#8217;aux cartes de galaxies.<\/p><\/div><ul class=\"lst\"><li><a href=\"https:\/\/smalltalks.eu\/blog\/2021\/12\/08\/ou-sommes-nous-dans-lunivers\/\">O\u00f9 sommes-nous dans l&#8217;univers ?<\/a><br><span>Le pendule de Foucault, le mouvement r\u00e9el de la Terre dans l&#8217;espace, et Laniakea, notre superamas.<\/span><\/li><li><a href=\"https:\/\/smalltalks.eu\/blog\/2019\/10\/13\/voyage-parmi-22-935-galaxies-the-alfalfa-sky\/\">Voyage parmi 22 935 galaxies (The ALFALFA Sky)<\/a><br><span>Un vol \u00e0 travers les 22 935 galaxies du relev\u00e9 ALFALFA, chacune \u00e0 sa position dans l&#8217;espace.<\/span><\/li><\/ul><\/div>\n\n\n\n<div class=\"stx\"><p class=\"note\">Sciences : <a href=\"https:\/\/smalltalks.eu\/blog\/?page_id=3137\">Math\u00e9matiques<\/a> \u00b7 <a href=\"https:\/\/smalltalks.eu\/blog\/?page_id=3138\">Physique<\/a> \u00b7 <b>Astronomie<\/b> \u00b7 <a href=\"https:\/\/smalltalks.eu\/blog\/?page_id=3140\">Le vivant et le cerveau<\/a> \u00b7 <a href=\"https:\/\/smalltalks.eu\/blog\/?page_id=3141\">Raisonner et douter<\/a><\/p><\/div>\n","protected":false},"excerpt":{"rendered":"<p>Explorer le blog \u203a Sciences \u203a Astronomie Ici, l&#8217;astronomie commence au fond du jardin. En 2014, l&#8217;auteur observe le ciel avec ses enfants et d\u00e9couvre qu&#8217;il suffit de regarder : plan\u00e8tes, satellites de Jupiter, crat\u00e8res de la Lune. Suivent des photos prises \u00e0 l&#8217;iPhone, un t\u00e9lescope, et quelques vid\u00e9os qui changent d&#8217;\u00e9chelle. Le parcours compte trois \u00e9tapes : le ciel \u00e0 l&#8217;\u0153il nu, l&#8217;observation instrument\u00e9e, puis la place de la Terre dans l&#8217;univers. \u00c9tape 1 \u2014 Le ciel \u00e0 l&#8217;\u0153il&#8230;<\/p>\n<p class=\"read-more\"><a class=\"btn btn-default\" href=\"https:\/\/smalltalks.eu\/blog\/explorer\/sciences\/astronomie\/\"> Read More<span class=\"screen-reader-text\">  Read More<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"parent":3131,"menu_order":3,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-3139","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/smalltalks.eu\/blog\/wp-json\/wp\/v2\/pages\/3139","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/smalltalks.eu\/blog\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/smalltalks.eu\/blog\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/smalltalks.eu\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/smalltalks.eu\/blog\/wp-json\/wp\/v2\/comments?post=3139"}],"version-history":[{"count":2,"href":"https:\/\/smalltalks.eu\/blog\/wp-json\/wp\/v2\/pages\/3139\/revisions"}],"predecessor-version":[{"id":3244,"href":"https:\/\/smalltalks.eu\/blog\/wp-json\/wp\/v2\/pages\/3139\/revisions\/3244"}],"up":[{"embeddable":true,"href":"https:\/\/smalltalks.eu\/blog\/wp-json\/wp\/v2\/pages\/3131"}],"wp:attachment":[{"href":"https:\/\/smalltalks.eu\/blog\/wp-json\/wp\/v2\/media?parent=3139"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}