{"id":13250,"date":"2021-01-06T16:32:20","date_gmt":"2021-01-06T16:32:20","guid":{"rendered":"https:\/\/blogs.futura-sciences.com\/feldmann\/?p=13250"},"modified":"2021-01-20T17:26:29","modified_gmt":"2021-01-20T17:26:29","slug":"voici-pitranger-un-rover-concu-pour-explorer-les-grottes-lunaires","status":"publish","type":"post","link":"https:\/\/blogs.futura-sciences.com\/feldmann\/2021\/01\/06\/voici-pitranger-un-rover-concu-pour-explorer-les-grottes-lunaires\/","title":{"rendered":"Voici PitRanger, un rover con\u00e7u pour explorer les grottes lunaires"},"content":{"rendered":"<p><strong>Des chercheurs am\u00e9ricains ont mis au point le petit rover PitRanger. Sa mission : \u00e9tudier le sous-sol de la Lune.<\/strong><\/p>\n<h5>Des trous dans la Lune :<\/h5>\n<p>Les missions d&#8217;exploration lunaires par les orbiteurs<a href=\"https:\/\/lunar.gsfc.nasa.gov\/\" target=\"_blank\" rel=\"noopener\"> LRO<\/a> (am\u00e9ricain) et <a href=\"https:\/\/www.kaguya.jaxa.jp\/index_e.htm\" target=\"_blank\" rel=\"noopener\">Kaguya<\/a> (japonais) nous ont permis de conna\u00eetre les moindres d\u00e9tails de la surface de notre satellite naturel. Gr\u00e2ce aux t\u00e9lescopes embarqu\u00e9s sur ces sondes, il a \u00e9t\u00e9 possible de d\u00e9couvrir de nouvelles formations g\u00e9ologiques. Les plus \u00e9nigmatiques sont des puits. On a identifi\u00e9 environ 200 trous dont le diam\u00e8tre varie de quelques m\u00e8tres \u00e0 un kilom\u00e8tre.<\/p>\n<figure id=\"attachment_13253\" aria-describedby=\"caption-attachment-13253\" style=\"width: 450px\" class=\"wp-caption alignnone\"><a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2021\/01\/pit2.jpg\" rel=\"lightbox[13250]\"><img loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-13253\" src=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2021\/01\/pit2-450x179.jpg\" alt=\"\" width=\"450\" height=\"179\" srcset=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2021\/01\/pit2-450x179.jpg 450w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2021\/01\/pit2-768x305.jpg 768w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2021\/01\/pit2.jpg 800w\" sizes=\"auto, (max-width: 450px) 100vw, 450px\" \/><\/a><figcaption id=\"caption-attachment-13253\" class=\"wp-caption-text\">Quelques exemples de puits photographi\u00e9s par l&#8217;orbiteur lunaire LRO. Chaque image fait 200 m\u00e8tres de c\u00f4t\u00e9. \u00a9 NASA\/Goddard Space Flight Center\/Arizona State<\/figcaption><\/figure>\n<h5>Refuges pour futurs colons :<\/h5>\n<p>Ces gouffres correspondent \u00e0 l&#8217;effondrement d&#8217;une partie du plafond d&#8217;anciens <a href=\"https:\/\/www.futura-sciences.com\/sciences\/actualites\/colonisation-lune-tunnels-lave-geants-lune-mars-sont-meilleurs-endroits-construire-villes-65666\/\" target=\"_blank\" rel=\"noopener\">tunnels de lave<\/a>. Des grottes g\u00e9antes qui peuvent s&#8217;\u00e9tirer sur des dizaines de kilom\u00e8tres. Voil\u00e0 une aubaine pour de futurs colonisateurs qui pourraient s&#8217;y abriter des radiations intenses et y construire de v\u00e9ritables villes souterraines.<\/p>\n<figure id=\"attachment_13251\" aria-describedby=\"caption-attachment-13251\" style=\"width: 450px\" class=\"wp-caption alignnone\"><a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2021\/01\/pit1.jpg\" rel=\"lightbox[13250]\"><img loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-13251\" src=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2021\/01\/pit1-450x247.jpg\" alt=\"\" width=\"450\" height=\"247\" srcset=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2021\/01\/pit1-450x247.jpg 450w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2021\/01\/pit1-768x421.jpg 768w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2021\/01\/pit1.jpg 800w\" sizes=\"auto, (max-width: 450px) 100vw, 450px\" \/><\/a><figcaption id=\"caption-attachment-13251\" class=\"wp-caption-text\">PitRanger est un petit rover con\u00e7u pour explorer les grottes lunaires. Il pourrait rejoindre la Lune dans un futur proche. \u00a9 William Whittaker\/ USRA\/ Carnegie Mellon University<\/figcaption><\/figure>\n<p>Pour le moment, aucune des missions au sol n&#8217;a pu s&#8217;approcher de ces puits. Mais leur exploration pourrait bien \u00eatre au menu des prochaines aventures lunaires. <!--more--><\/p>\n<h5>Imagerie en 3D :<\/h5>\n<p>Une \u00e9quipe de chercheurs de l&#8217;universit\u00e9 priv\u00e9e am\u00e9ricaine <a href=\"https:\/\/www.cmu.edu\/\" target=\"_blank\" rel=\"noopener\">Carnegie Mellon<\/a> r\u00e9unie autour de <a href=\"https:\/\/www.ri.cmu.edu\/ri-faculty\/william-red-l-whittaker\/\" target=\"_blank\" rel=\"noopener\">William Whittaker<\/a> vient de pr\u00e9senter PitRanger. Un projet qui s&#8217;inscrit dans le cadre du <em>NASA Innovative Advanced Concepts Program<\/em> (<a href=\"https:\/\/www.nasa.gov\/directorates\/spacetech\/niac\/index.html\" target=\"_blank\" rel=\"noopener\">NIAC<\/a>). Il s&#8217;agit d&#8217;un petit rover de 15 kilogrammes pouvant se d\u00e9placer \u00e0 une vitesse maximale de 2,5 cm\/sec. Son alimentation \u00e9lectrique par des panneaux solaires le r\u00e9serve \u00e0 de courtes missions d&#8217;une douzaine de jours.<\/p>\n<figure id=\"attachment_13255\" aria-describedby=\"caption-attachment-13255\" style=\"width: 450px\" class=\"wp-caption alignnone\"><a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2021\/01\/pit3.jpg\" rel=\"lightbox[13250]\"><img loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-13255\" src=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2021\/01\/pit3-450x450.jpg\" alt=\"\" width=\"450\" height=\"450\" srcset=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2021\/01\/pit3-450x450.jpg 450w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2021\/01\/pit3-150x150.jpg 150w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2021\/01\/pit3.jpg 700w\" sizes=\"auto, (max-width: 450px) 100vw, 450px\" \/><\/a><figcaption id=\"caption-attachment-13255\" class=\"wp-caption-text\">De nombreuses mesures effectu\u00e9es depuis le bord d&#8217;une fosse lunaire permettraient de reconstituer le tunnel de lave en 3D. \u00a9 USRA\/ Carnegie Mellon University<\/figcaption><\/figure>\n<p>Avec une dur\u00e9e de vie aussi courte, le rover doit optimiser son temps de travail. Il sera d\u00e9pos\u00e9 avec un petit atterrisseur \u00e0 proximit\u00e9 d&#8217;une fosse. PitRanger fera le tour de la cavit\u00e9 en r\u00e9alisant depuis le bord des milliers d&#8217;images et de mesures qu&#8217;il transmettra r\u00e9guli\u00e8rement \u00e0 l&#8217;atterrisseur. Une fois ces donn\u00e9es envoy\u00e9es vers la Terre, elles devraient permettre de r\u00e9aliser un mod\u00e8le 3D de la grotte par photogramm\u00e9trie. Et peut-\u00eatre de r\u00e9pondre enfin \u00e0 la question de l&#8217;habitabilit\u00e9 de ces tunnels&#8230;<\/p>\n<h5>Vous pourriez aimer :<\/h5>\n<ul>\n<li><a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2019\/04\/22\/la-sonde-lro-nous-offre-la-lune-en-tres-haute-resolution\/\" target=\"_blank\" rel=\"noopener\">La sonde LRO nous offre la Lune en tr\u00e8s haute r\u00e9solution<\/a><\/li>\n<li><a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2020\/10\/20\/un-memorial-lunaire-pour-les-astronautes-de-challenger\/\" target=\"_blank\" rel=\"noopener\">Un m\u00e9morial lunaire pour les astronautes de Challenger<\/a><\/li>\n<li><a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2020\/12\/14\/en-alaska-magnifique-jeu-de-lumiere-autour-de-la-pleine-lune\/\" target=\"_blank\" rel=\"noopener\">En Alaska, magnifique jeu de lumi\u00e8re autour de la Pleine Lune<\/a><\/li>\n<\/ul>\n<p>Suivez l\u2019actualit\u00e9 astronomique en vous abonnant \u00e0 Cielmania sur\u00a0<a href=\"https:\/\/www.facebook.com\/cielmania\/\" target=\"_blank\" rel=\"noopener noreferrer\">Facebook<\/a>\u00a0ou\u00a0<a href=\"https:\/\/twitter.com\/cielmania\" target=\"_blank\" rel=\"noopener noreferrer\">Twitter<\/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>Des chercheurs am\u00e9ricains ont mis au point le petit rover PitRanger. Sa mission : \u00e9tudier le sous-sol de la Lune. Des trous dans la Lune : Les missions d&#8217;exploration lunaires par les orbiteurs LRO (am\u00e9ricain) et Kaguya (japonais) nous ont permis de conna\u00eetre les moindres d\u00e9tails de la surface de notre satellite naturel. Gr\u00e2ce aux &hellip; <a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2021\/01\/06\/voici-pitranger-un-rover-concu-pour-explorer-les-grottes-lunaires\/\" class=\"more-link\">Continuer la lecture de <span class=\"screen-reader-text\">Voici PitRanger, un rover con\u00e7u pour explorer les grottes lunaires<\/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":13251,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","_links_to":"","_links_to_target":""},"categories":[83],"tags":[486,2632,2960,2961],"class_list":["post-13250","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-la-lune","tag-nasa","tag-on-the-moon","tag-pitranger","tag-william-whittaker"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.1 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Voici PitRanger, un rover con\u00e7u pour explorer les grottes lunaires<\/title>\n<meta name=\"description\" content=\"Des chercheurs am\u00e9ricains ont mis au point le petit rover PitRanger. 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