{"id":14559,"date":"2022-09-27T11:23:36","date_gmt":"2022-09-27T09:23:36","guid":{"rendered":"https:\/\/congopubonline.com\/?p=14559"},"modified":"2022-10-04T10:21:39","modified_gmt":"2022-10-04T08:21:39","slug":"defense-planetaire-limpact-de-dart-sur-la-lune-dimorphos","status":"publish","type":"post","link":"https:\/\/congopubonline.com\/?p=14559","title":{"rendered":"D\u00e9fense plan\u00e9taire: l’impact de DART sur la lune Dimorphos"},"content":{"rendered":"\n

DART est la premi\u00e8re mission d’essai de d\u00e9fense plan\u00e9taire de la NASA. L’Observatoire de Paris – PSL est membre de la \u00ab\u00a0DART Investigation Team\u00a0\u00bb. Mardi 27 septembre 2022, \u00e0 1h14 (heure fran\u00e7aise), ses scientifiques suivront de pr\u00e8s l’impact pr\u00e9vu avec Dimorphos, la\u00a0lune\u00a0de l’ast\u00e9ro\u00efde\u00a0(65803) Didymos<\/strong>.<\/p>\n\n\n\n

DART est la premi\u00e8re mission d’essai de d\u00e9fense\u00a0plan\u00e9taire, comme test d’une mitigation de risque sur un\u00a0ast\u00e9ro\u00efde g\u00e9ocroiseur. Cette mission de la\u00a0NASA, men\u00e9e dans le cadre d’une collaboration internationale, ex\u00e9cute intentionnellement un impact\u00a0cin\u00e9tique\u00a0sur Dimorphos la lune de l’ast\u00e9ro\u00efde (65803) Didymos, afin de modifier l\u00e9g\u00e8rement son mouvement relatif.<\/p>\n\n\n\n

Alors que cet ast\u00e9ro\u00efde ne repr\u00e9sente en aucune sorte une menace pour la\u00a0Terre, l’objectif de la mission DART est de d\u00e9montrer qu’un vaisseau spatial peut naviguer de mani\u00e8re autonome vers un ast\u00e9ro\u00efde g\u00e9ocroiseur pour effectuer un impact cin\u00e9tique.<\/p>\n\n\n\n

Ceci prouvera, en grandeur r\u00e9elle, que la technique de mitigation par impacteur cin\u00e9tique est une solution viable pour d\u00e9vier un ast\u00e9ro\u00efde qui s’av\u00e9rerait \u00eatre sur une\u00a0trajectoire\u00a0de\u00a0collision\u00a0future avec la Terre – si jamais on en d\u00e9couvrait un, pr\u00e9sentant un tel risque.<\/p>\n\n\n\n

Une mission de gestion du risque<\/h5>\n\n\n\n

Il n’y a aucun risque actuellement de collision entre la Terre et un ast\u00e9ro\u00efde g\u00e9ocroiseur, mais il faut s’assurer que l’on sera en mesure d’y faire face rapidement au\u00a0besoin, en ma\u00eetrisant toutes les \u00e9tapes de la gestion de ce risque avec, entre autres, la\u00a0technologie\u00a0\u00e0 mettre en oeuvre.<\/p>\n\n\n\n

L’impact sera suivi dans le\u00a0monde\u00a0entier par la DART Investigation Team, une collaboration\u00a0scientifique\u00a0dont fait partie l’Observatoire de Paris\u00a0– PSL et qui regroupe au\u00a0total\u00a0230 chercheurs issus de 102 institutions diff\u00e9rentes, r\u00e9parties dans 27\u00a0pays.<\/p>\n\n\n\n

Son analyse permettra de pr\u00e9parer la prochaine mission spatiale europ\u00e9enne Hera qui observera le syst\u00e8me Dimorphos – Didymos en 2027, \u00e9tant attendu par ailleurs un autre \u00e9v\u00e8nement de taille: le passage de l’ast\u00e9ro\u00efde Apophis le 13 avril 2029, qui sera visible \u00e0 l’oeil nu depuis la Terre.<\/p>\n\n\n\n

Techno-Science via CONGO PUB Online<\/em><\/strong><\/p>\n

<\/span> 489<\/span> Vues<\/span><\/div>","protected":false},"excerpt":{"rendered":"

DART est la premi\u00e8re mission d’essai de d\u00e9fense plan\u00e9taire de la NASA. L’Observatoire de Paris – PSL est membre de la \u00ab\u00a0DART Investigation Team\u00a0\u00bb. Mardi 27 septembre 2022, \u00e0 1h14…<\/p>\n","protected":false},"author":1,"featured_media":14560,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"content-type":"","_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"categories":[61],"tags":[],"class_list":["post-14559","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-sci-et-tech"],"yoast_head":"\nD\u00e9fense plan\u00e9taire: l'impact de DART sur la lune Dimorphos - Congo Pub Online<\/title>\n<meta name=\"description\" content=\"D\u00e9fense plan\u00e9taire: l'impact de DART sur la lune Dimorphos\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/congopubonline.com\/?p=14559\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"D\u00e9fense plan\u00e9taire: l'impact de DART sur la lune Dimorphos\" \/>\n<meta property=\"og:description\" content=\"D\u00e9fense plan\u00e9taire: l'impact de DART sur la lune Dimorphos\" \/>\n<meta property=\"og:url\" content=\"https:\/\/congopubonline.com\/?p=14559\" \/>\n<meta property=\"og:site_name\" content=\"Congo Pub Online\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/web.facebook.com\/Congopubonline\" \/>\n<meta property=\"article:published_time\" content=\"2022-09-27T09:23:36+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2022-10-04T08:21:39+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/congopubonline.com\/wp-content\/uploads\/2022\/09\/dart.webp\" \/>\n\t<meta property=\"og:image:width\" content=\"1778\" \/>\n\t<meta property=\"og:image:height\" content=\"1000\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/webp\" \/>\n<meta name=\"author\" content=\"admin9775\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@CONGOPUBOnline\" \/>\n<meta name=\"twitter:site\" content=\"@CONGOPUBOnline\" \/>\n<meta name=\"twitter:label1\" content=\"\u00c9crit par\" \/>\n\t<meta name=\"twitter:data1\" content=\"admin9775\" \/>\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:\\\/\\\/congopubonline.com\\\/?p=14559#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/congopubonline.com\\\/?p=14559\"},\"author\":{\"name\":\"admin9775\",\"@id\":\"https:\\\/\\\/congopubonline.com\\\/#\\\/schema\\\/person\\\/d2f3a940be2e9c1a0e4f8831e203f3cc\"},\"headline\":\"D\u00e9fense plan\u00e9taire: l’impact de DART sur la lune Dimorphos\",\"datePublished\":\"2022-09-27T09:23:36+00:00\",\"dateModified\":\"2022-10-04T08:21:39+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/congopubonline.com\\\/?p=14559\"},\"wordCount\":396,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\\\/\\\/congopubonline.com\\\/#organization\"},\"image\":{\"@id\":\"https:\\\/\\\/congopubonline.com\\\/?p=14559#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/congopubonline.com\\\/wp-content\\\/uploads\\\/2022\\\/09\\\/dart.webp\",\"articleSection\":[\"Science et Technologie\"],\"inLanguage\":\"fr-FR\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\\\/\\\/congopubonline.com\\\/?p=14559#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/congopubonline.com\\\/?p=14559\",\"url\":\"https:\\\/\\\/congopubonline.com\\\/?p=14559\",\"name\":\"D\u00e9fense plan\u00e9taire: l'impact de DART sur la lune Dimorphos - 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