{"id":21540,"date":"2025-08-22T08:58:50","date_gmt":"2025-08-22T08:58:50","guid":{"rendered":"https:\/\/blogs.futura-sciences.com\/feldmann\/?p=21540"},"modified":"2025-08-27T13:42:12","modified_gmt":"2025-08-27T13:42:12","slug":"vingt-cinq-heures-avant-la-nouvelle-lune","status":"publish","type":"post","link":"https:\/\/blogs.futura-sciences.com\/feldmann\/2025\/08\/22\/vingt-cinq-heures-avant-la-nouvelle-lune\/","title":{"rendered":"Vingt-cinq heures avant la Nouvelle Lune"},"content":{"rendered":"<p><strong>Le croissant lunaire faisait une derni\u00e8re apparition ce matin, avant la prochaine Nouvelle Lune, faussement appel\u00e9e Lune noire.<\/strong><\/p>\n<h5>Le buzz de la Lune noire :<\/h5>\n<p>La Nouvelle Lune (NL) se produit tous les 29,53 jours, le temps d&#8217;une <a href=\"https:\/\/fr.wikipedia.org\/wiki\/Lunaison\" target=\"_blank\" rel=\"noopener\">lunaison<\/a>. Au cours de cette p\u00e9riode, on assiste aux diff\u00e9rentes phases. Apr\u00e8s la NL, c&#8217;est le Premier quartier, suivi de la Pleine Lune puis du Dernier quartier, avant la NL suivante. L&#8217;\u00e9cart moyen entre chaque phase est donc d&#8217;environ 7,4 jours. Ce matin, veille de la NL, on pouvait observer un tr\u00e8s fin croissant au-dessus de l&#8217;horizon Est :<\/p>\n<figure id=\"attachment_21541\" aria-describedby=\"caption-attachment-21541\" style=\"width: 450px\" class=\"wp-caption alignnone\"><a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2025\/08\/croissant_lune1.jpg\" rel=\"lightbox[21540]\"><img loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-21541\" src=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2025\/08\/croissant_lune1-450x270.jpg\" alt=\"\" width=\"450\" height=\"270\" srcset=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2025\/08\/croissant_lune1-450x270.jpg 450w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2025\/08\/croissant_lune1-1024x614.jpg 1024w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2025\/08\/croissant_lune1-768x461.jpg 768w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2025\/08\/croissant_lune1.jpg 1500w\" sizes=\"auto, (max-width: 450px) 100vw, 450px\" \/><\/a><figcaption id=\"caption-attachment-21541\" class=\"wp-caption-text\">Joli croissant de Lune \u00e0 l&#8217;aube du 22 ao\u00fbt 2025. \u00a9 Jean-Baptiste Feldmann<\/figcaption><\/figure>\n<p>Au moment de la NL, notre satellite naturel est invisible, car trop proche angulairement du <a href=\"https:\/\/cnes.fr\/dossiers\/soleil\" target=\"_blank\" rel=\"noopener\">Soleil<\/a>. Invisible, vraiment ? Sauf pour l&#8217;astrophotographe fran\u00e7ais Thierry Legault, qui a r\u00e9ussi l&#8217;exploit de <a href=\"https:\/\/www.futura-sciences.com\/sciences\/actualites\/astronomie-premiere-fois-on-photographie-nouvelle-lune-23448\/\" target=\"_blank\" rel=\"noopener\">le photographier le 14 avril 2010<\/a>. Mais pour le commun des mortels, il faut attendre deux ou trois jours pour retrouver un fin croissant, cette fois au-dessus de l&#8217;horizon Ouest en soir\u00e9e. Bref, la m\u00e9canique c\u00e9leste explique parfaitement les diff\u00e9rentes phases lunaires, nul besoin de chercher \u00e0 faire le buzz avec une pr\u00e9tendue Lune noire !<\/p>\n<figure id=\"attachment_21542\" aria-describedby=\"caption-attachment-21542\" style=\"width: 450px\" class=\"wp-caption alignnone\"><a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2025\/08\/phases.jpg\" rel=\"lightbox[21540]\"><img loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-21542\" src=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2025\/08\/phases-450x333.jpg\" alt=\"\" width=\"450\" height=\"333\" srcset=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2025\/08\/phases-450x333.jpg 450w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2025\/08\/phases.jpg 766w\" sizes=\"auto, (max-width: 450px) 100vw, 450px\" \/><\/a><figcaption id=\"caption-attachment-21542\" class=\"wp-caption-text\">Les phases s&#8217;expliquent par les diff\u00e9rentes configurations Lune-Terre-Soleil. \u00a9<a href=\"https:\/\/www.astrojuniors.fr\/activite\/les-phases-de-la-lune\" target=\"_blank\" rel=\"noopener\">AstroJuniors<\/a><\/figcaption><\/figure>\n<h5>Vous pourriez aimer :<\/h5>\n<ul>\n<li><a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2025\/06\/28\/premier-croissant-de-lune-de-lete\/\" target=\"_blank\" rel=\"noopener\">Premier croissant de Lune de l&#8217;\u00e9t\u00e9<\/a><\/li>\n<li><a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2024\/04\/05\/insolite-en-sicile-letna-vapote-sous-la-lune\/\" target=\"_blank\" rel=\"noopener\">Insolite : en Sicile, l\u2019Etna vapote sous la Lune<\/a><\/li>\n<li><a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2023\/12\/26\/quand-vincent-van-gogh-peignait-la-pleine-lune\/\" target=\"_blank\" rel=\"noopener\">Quand Vincent Van Gogh peignait la Pleine Lune<\/a><\/li>\n<\/ul>\n<p>Suivez l\u2019actualit\u00e9 astronomique et d\u00e9couvrez mes images du ciel en vous abonnant \u00e0 Cielmania sur\u00a0<a href=\"https:\/\/www.facebook.com\/cielmania\/\" target=\"_blank\" rel=\"noopener noreferrer\">Facebook<\/a>\u00a0et sur\u00a0<a href=\"https:\/\/bsky.app\/profile\/cielmania.bsky.social\" target=\"_blank\" rel=\"noopener\">Bluesky<\/a>.<\/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>Le croissant lunaire faisait une derni\u00e8re apparition ce matin, avant la prochaine Nouvelle Lune, faussement appel\u00e9e Lune noire. Le buzz de la Lune noire : La Nouvelle Lune (NL) se produit tous les 29,53 jours, le temps d&#8217;une lunaison. Au cours de cette p\u00e9riode, on assiste aux diff\u00e9rentes phases. Apr\u00e8s la NL, c&#8217;est le Premier &hellip; <a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2025\/08\/22\/vingt-cinq-heures-avant-la-nouvelle-lune\/\" class=\"more-link\">Continuer la lecture de <span class=\"screen-reader-text\">Vingt-cinq heures avant la Nouvelle Lune<\/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":8,"featured_media":21541,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","_links_to":"","_links_to_target":""},"categories":[83],"tags":[3815,161,2632,2179],"class_list":["post-21540","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-la-lune","tag-lune-noire","tag-nouvelle-lune","tag-on-the-moon","tag-thierry-legault"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.1 - 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