{"id":77315,"date":"2026-03-21T00:12:12","date_gmt":"2026-03-21T00:12:12","guid":{"rendered":"https:\/\/www.africa-press.net\/gabon\/politique\/make-pluto-great-again-reclasser-pluton-en-planete"},"modified":"2026-04-18T03:35:11","modified_gmt":"2026-04-18T03:35:11","slug":"make-pluto-great-again-reclasser-pluton-en-planete","status":"publish","type":"post","link":"https:\/\/www.africa-press.net\/gabon\/toutes-les-actualites\/make-pluto-great-again-reclasser-pluton-en-planete","title":{"rendered":"Make Pluto Great Again: Reclasser Pluton En Plane\u0300te"},"content":{"rendered":"<p><span class=\"ap-article-header-tag\"> <strong>Africa-Press &#8211; Gabon. <\/strong> <\/span>En mars 2026, le nouvel administrateur de la Nasa, Jared Isaacman, a dit soutenir l&rsquo;ide\u0301e de \u00ab\u00a0Make Pluto Great Again\u00a0\u00bb, reprenant a\u0300 sa manie\u0300re le slogan de Donald Trump. Cette campagne a e\u0301te\u0301 alimente\u0301e ces derniers mois par le se\u0301nateur re\u0301publicain Mike Lee, qui a appele\u0301 Donald Trump a\u0300 \u00ab\u00a0Make Pluto Planetary Again\u00a0\u00bb, et par Elon Musk, qui avait re\u0301pondu en mai 2025 \u00ab\u00a0I&rsquo;d support that\u00a0\u00bb a\u0300 une demande de William Shatner, un des acteurs emble\u0301matiques de la se\u0301rie Star Trek, re\u0301clamant un de\u0301cret pre\u0301sidentiel pour re\u0301habiliter Pluton. Le sujet, longtemps cantonne\u0301 aux astronomes, est ainsi devenu un petit objet politique et culturel, parfait pour la galaxie MAGA (\u00ab\u00a0Make America Great Again\u00a0\u00bb).<\/p>\n<p><b>Pourquoi Pluton a e\u0301te\u0301 de\u0301classe\u0301e<\/b><\/p>\n<p>Le hic, c&rsquo;est que ni Trump, ni Musk, ni me\u0302me la Nasa ne peuvent changer ce statut. La classification des corps ce\u0301lestes rele\u0300ve de l&rsquo;Union astronomique internationale (UAI), qui rappelle n&rsquo;avoir pas modifie\u0301 sa de\u0301finition depuis 2006. Sur ses propres pages, la Nasa pre\u0301sente toujours Pluton comme une plane\u0300te naine, situe\u0301e dans la ceinture de Kuiper. Si Pluton a perdu son rang, cela n&rsquo;a rien a\u0300 voir avec un quelconque anti-ame\u0301ricanisme.<\/p>\n<p>Le proble\u0300me est apparu quand les astronomes ont commence\u0301 a\u0300 de\u0301couvrir, au-dela\u0300 de Neptune, toute une population d&rsquo;objets comparables dans la ceinture de Kuiper. Il a alors fallu trancher: soit allonger la liste des plane\u0300tes, soit en resserrer la de\u0301finition. En aou\u0302t 2006, l&rsquo;UAI a fixe\u0301 trois crite\u0300res: un astre doit tourner autour du Soleil, e\u0302tre assez massif pour devenir presque rond, et avoir \u00ab\u00a0nettoye\u0301\u00a0\u00bb le voisinage de son orbite. Pluton remplit les deux premiers, mais pas le troisie\u0300me. Elle partage sa re\u0301gion avec d&rsquo;autres objets transneptuniens: c&rsquo;est pour cela qu&rsquo;elle a e\u0301te\u0301 reclasse\u0301e comme plane\u0300te naine.<\/p>\n<p>Les plus belles images de la sonde New Horizons<\/p>\n<p><b>Un de\u0301bat tenace aux Etats-Unis<\/b><\/p>\n<p>Si Pluton suscite une telle charge affective aux Etats-Unis, c&rsquo;est aussi pour une raison tre\u0300s simple: elle reste la seule plane\u0300te du syste\u0300me solaire de\u0301couverte par un Ame\u0301ricain. Clyde Tombaugh l&rsquo;a repe\u0301re\u0301e en 1930, a\u0300 l&rsquo;observatoire Lowell, apre\u0300s avoir e\u0301te\u0301 recrute\u0301 pour traquer la fameuse \u00ab\u00a0plane\u0300te X\u00a0\u00bb. Cette de\u0301couverte est reste\u0301e un motif de fierte\u0301 nationale, d&rsquo;autant que Pluton a longtemps occupe\u0301 la place symbolique de neuvie\u0300me et dernie\u0300re plane\u0300te. Son de\u0301classement a donc e\u0301te\u0301 ve\u0301cu par beaucoup comme une perte de prestige scientifique plus que comme une correction de nomenclature.<\/p>\n<p>Le de\u0301bat scientifique, lui, n&rsquo;a jamais totalement disparu. Certains plane\u0301tologues, comme Philip Metzger, de\u0301fendent une de\u0301finition plus ge\u0301ophysique, centre\u0301e sur la forme et la complexite\u0301 de ce monde, re\u0301ve\u0301le\u0301e par la sonde New Horizons, pluto\u0302t que sur sa domination orbitale. Mais, pour l&rsquo;heure, la re\u0300gle officielle reste celle de l&rsquo;UAI. Et c&rsquo;est peut-e\u0302tre ce qui rend Pluton si utile politiquement: me\u0302me a\u0300 5 milliards de kilome\u0300tres, l&rsquo;Ame\u0301rique aime encore y projeter ses guerres de symboles.<\/p>\n<p class=\"ap-article-footer-note\">Retrouvez plus d\u2019actualit\u00e9s et d\u2019analyses sur <span class=\"ap-highlight-country\">Gabon<\/span> sur le site <span class=\"ap-highlight-brand\">Africa Press<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Africa-Press &#8211; Gabon. En mars 2026, le nouvel administrateur de la Nasa, Jared Isaacman, a dit soutenir l&rsquo;ide\u0301e de \u00ab\u00a0Make Pluto Great Again\u00a0\u00bb, reprenant a\u0300 sa manie\u0300re le slogan de Donald Trump. Cette campagne a e\u0301te\u0301 alimente\u0301e ces derniers mois par le se\u0301nateur re\u0301publicain Mike Lee, qui a appele\u0301 Donald Trump a\u0300 \u00ab\u00a0Make Pluto Planetary [&hellip;]<\/p>\n","protected":false},"author":82,"featured_media":77314,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[22,10],"tags":[49],"class_list":["post-77315","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-divers","category-toutes-les-actualites","tag-gabon"],"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>Make Pluto Great Again: Reclasser Pluton En Plane\u0300te - Gabon<\/title>\n<meta name=\"description\" content=\"-article-header-tag&quot;&gt; Africa-Press - Gabon. 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