{"id":96422,"date":"2025-03-17T11:37:17","date_gmt":"2025-03-17T11:37:17","guid":{"rendered":"https:\/\/www.africa-press.net\/cotedivoire\/politique\/voici-les-toutes-premieres-images-de-deimos-lune-de-mars-prises-par-la-sonde-hera"},"modified":"2025-03-17T11:37:17","modified_gmt":"2025-03-17T11:37:17","slug":"voici-les-toutes-premieres-images-de-deimos-lune-de-mars-prises-par-la-sonde-hera","status":"publish","type":"post","link":"https:\/\/www.africa-press.net\/cotedivoire\/toutes-les-actualites\/voici-les-toutes-premieres-images-de-deimos-lune-de-mars-prises-par-la-sonde-hera","title":{"rendered":"Voici les toutes premi\u00e8res images de Deimos, lune de Mars, prises par la sonde Hera"},"content":{"rendered":"

Africa-Press – C\u00f4te d’Ivoire. <\/strong><\/span>Lors de son survol de Mars, la mission Hera de l\u2019Agence spatiale europe\u0301enne (ESA) a pointe\u0301 ses instruments vers Deimos, obtenant des images de ce petit satellite martien. Ces observations ine\u0301dites permettent de mieux caracte\u0301riser cet objet et de pre\u0301parer la mission japonaise MMX (Martian Moons eXploration), attendue pour 2026.<\/p>\n

Une origine toujours myste\u0301rieuse<\/b><\/p>\n

Lors de ce survol, la sonde a utilise\u0301 pour la premie\u0300re fois sa charge utile a\u0300 des fins scientifiques au-dela\u0300 de la Terre et de la Lune. Activant trois instruments, Hera a photographie\u0301 la surface de la plane\u0300te rouge ainsi que celle de Deimos. Se de\u0301plac\u0327ant a\u0300 9 km\/s par rapport a\u0300 Mars, Hera a pu photographier Deimos a\u0300 une distance de 1000 km et imager sa face oppose\u0301e, habituellement moins visible. Cette lune recouverte de poussie\u0300re pourrait en re\u0301alite\u0301 e\u0302tre un vestige d’un impact ge\u0301ant sur Mars ou un aste\u0301roi\u0308de capture\u0301 par la gravite\u0301 martienne.<\/p>\n

<\/p>\n

Hera a e\u0301galement effectue\u0301 quelques observations conjointes de Deimos avec Mars Express, la sonde de l’ESA, qui est en orbite autour de la plane\u0300te rouge depuis plus de deux de\u0301cennies.<\/p>\n

En route vers Didymos<\/b>
\n<\/p>\n

Hera a pour objectif premier d\u2019e\u0301valuer les effets de l’impact de la mission DART sur le syste\u0300me binaire d’aste\u0301roi\u0308des Didymos, et plus particulie\u0300rement de Dimorphos, la petite lune impacte\u0301e en 2022. Son passage autour de Mars lui a permis de profiter de l’assistance gravitationnelle de la plane\u0300te pour se diriger vers sa cible.<\/p>\n

Avec Didymos mesurant 780 me\u0300tres de diame\u0300tre et Dimorphos seulement 151 me\u0300tres, les destinations jumelles d’Hera sont bien plus petites que Deimos qui mesure 12,4 km de diame\u0300tre. Plusieurs autres man\u0153uvres sont pre\u0301vues avant qu’elle n’atteigne sa cible en 2026.<\/p>\n

Pour plus d’informations et d’analyses sur la C\u00f4te d’Ivoire<\/span>, suivez Africa-Press<\/span><\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"

Africa-Press – C\u00f4te d’Ivoire. Lors de son survol de Mars, la mission Hera de l\u2019Agence spatiale europe\u0301enne (ESA) a pointe\u0301 ses instruments vers Deimos, obtenant des images de ce petit satellite martien. Ces observations ine\u0301dites permettent de mieux caracte\u0301riser cet objet et de pre\u0301parer la mission japonaise MMX (Martian Moons eXploration), attendue pour 2026. Une […]<\/p>\n","protected":false},"author":82,"featured_media":96421,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[22,10],"tags":[37],"class_list":["post-96422","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-divers","category-toutes-les-actualites","tag-cote-divoire-2"],"yoast_head":"\nVoici les toutes premi\u00e8res images de Deimos, lune de Mars, prises par la sonde Hera - C\u00f4te d'Ivoire<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.africa-press.net\/cotedivoire\/politique\/voici-les-toutes-premieres-images-de-deimos-lune-de-mars-prises-par-la-sonde-hera\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Voici les toutes premi\u00e8res images de Deimos, lune de Mars, prises par la sonde Hera\" \/>\n<meta property=\"og:description\" content=\"Africa-Press – C\u00f4te d’Ivoire. Lors de son survol de Mars, la mission Hera de l\u2019Agence spatiale europe\u0301enne (ESA) a pointe\u0301 ses instruments vers Deimos, obtenant des images de ce petit satellite martien. Ces observations ine\u0301dites permettent de mieux caracte\u0301riser cet objet et de pre\u0301parer la mission japonaise MMX (Martian Moons eXploration), attendue pour 2026. 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