{"id":924929,"date":"2020-04-01T15:00:58","date_gmt":"2020-04-01T13:00:58","guid":{"rendered":"https:\/\/www.tomsguide.fr\/?p=924929"},"modified":"2024-01-26T16:45:43","modified_gmt":"2024-01-26T15:45:43","slug":"nasa-le-telescope-spatial-james-webb-deploie-son-miroir-avec-succes","status":"publish","type":"post","link":"https:\/\/www.tomsguide.fr\/nasa-le-telescope-spatial-james-webb-deploie-son-miroir-avec-succes\/","title":{"rendered":"NASA\u00a0: le t\u00e9lescope spatial James Webb d\u00e9ploie son miroir avec succ\u00e8s"},"content":{"rendered":"\n<p>Alors que la <strong>NASA<\/strong> vient d\u2019annoncer la mise en pause de ses programmes les plus ambitieux \u00e0 cause de la pand\u00e9mie de <strong>Covid-19<\/strong>, l\u2019agence spatiale revient sur les derni\u00e8res avanc\u00e9es du plus gros t\u00e9lescope spatial jamais construit. D\u00e9but mars, <strong>James Webb<\/strong> a franchi une \u00e9tape importante de son d\u00e9veloppement en d\u00e9ployant avec succ\u00e8s son immense miroir de 6,5 m\u00e8tres de diam\u00e8tre.&nbsp;<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img alt=\"Image 1 : NASA\u00a0: le t\u00e9lescope spatial James Webb d\u00e9ploie son miroir avec succ\u00e8s\" decoding=\"async\" width=\"800\" height=\"450\" src=\"https:\/\/www.tomsguide.fr\/content\/uploads\/sites\/2\/2020\/04\/nasa-esa-james-webb.jpeg\" alt=\"\" class=\"wp-image-925230\" srcset=\"https:\/\/www.tomsguide.fr\/content\/uploads\/sites\/2\/2020\/04\/nasa-esa-james-webb.jpeg 800w, https:\/\/www.tomsguide.fr\/content\/uploads\/sites\/2\/2020\/04\/nasa-esa-james-webb-300x169.jpeg 300w, https:\/\/www.tomsguide.fr\/content\/uploads\/sites\/2\/2020\/04\/nasa-esa-james-webb-150x84.jpeg 150w, https:\/\/www.tomsguide.fr\/content\/uploads\/sites\/2\/2020\/04\/nasa-esa-james-webb-200x113.jpeg 200w, https:\/\/www.tomsguide.fr\/content\/uploads\/sites\/2\/2020\/04\/nasa-esa-james-webb-250x141.jpeg 250w, https:\/\/www.tomsguide.fr\/content\/uploads\/sites\/2\/2020\/04\/nasa-esa-james-webb-350x197.jpeg 350w, https:\/\/www.tomsguide.fr\/content\/uploads\/sites\/2\/2020\/04\/nasa-esa-james-webb-400x225.jpeg 400w, https:\/\/www.tomsguide.fr\/content\/uploads\/sites\/2\/2020\/04\/nasa-esa-james-webb-450x253.jpeg 450w, https:\/\/www.tomsguide.fr\/content\/uploads\/sites\/2\/2020\/04\/nasa-esa-james-webb-500x281.jpeg 500w, https:\/\/www.tomsguide.fr\/content\/uploads\/sites\/2\/2020\/04\/nasa-esa-james-webb-550x309.jpeg 550w, https:\/\/www.tomsguide.fr\/content\/uploads\/sites\/2\/2020\/04\/nasa-esa-james-webb-600x338.jpeg 600w, https:\/\/www.tomsguide.fr\/content\/uploads\/sites\/2\/2020\/04\/nasa-esa-james-webb-640x360.jpeg 640w, https:\/\/www.tomsguide.fr\/content\/uploads\/sites\/2\/2020\/04\/nasa-esa-james-webb-710x399.jpeg 710w, https:\/\/www.tomsguide.fr\/content\/uploads\/sites\/2\/2020\/04\/nasa-esa-james-webb-755x425.jpeg 755w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><figcaption>Cr\u00e9dit : NASA \/ Sophia Roberts <\/figcaption><\/figure>\n\n\n\n<p>Dans une salle blanche du Northrop Grumman Space Systems en Californie, les syst\u00e8mes internes de l\u2019engin spatial ont pour la premi\u00e8re fois d\u00e9ploy\u00e9 son miroir dans la m\u00eame configuration qu\u2019il aura une fois en orbite. Une op\u00e9ration complexe puisqu\u2019il a fallu mettre en place un \u00e9quipement sp\u00e9cial pour compenser la gravit\u00e9 terrestre, et effectuer un essai dans des conditions proches de l\u2019impesanteur. <strong>James Webb<\/strong> se d\u00e9pliera \u00e0 nouveau pour un ultime test avant de rejoindre Kourou pour un lancement toujours pr\u00e9vu en mars 2021 \u00e0 bord d\u2019un lanceur <strong>Ariane&nbsp;5<\/strong>.<\/p>\n\n\n\n<iframe src=\"https:\/\/www.youtube.com\/embed\/xHTciBIEtmY\" allow=\"accelerometer; autoplay; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen=\"\" width=\"800\" height=\"450\" frameborder=\"0\"><\/iframe>\n\n\n\n<p class=\"has-background has-very-light-gray-background-color\"><strong>Lune : la NASA d\u00e9voile les 2 missions scientifiques s\u00e9lectionn\u00e9es<\/strong><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">James Webb, une machine \u00e0 remonter dans le temps jusqu\u2019\u00e0 l\u2019origine de l\u2019univers<\/h2>\n\n\n\n<p>Imagin\u00e9 dans les ann\u00e9es&nbsp;90 et lanc\u00e9 au d\u00e9but des ann\u00e9es&nbsp;2000, le t\u00e9lescope spatial est l\u2019un des projets les plus ambitieux de la NASA, mais aussi de l\u2019agence spatiale europ\u00e9enne et de l\u2019agence spatiale canadienne. Sauf un nouveau retard, il deviendra l\u2019ann\u00e9e prochaine le nouvel outil de pr\u00e9dilections des astrophysiciens pour \u00e9tudier les confins de l\u2019univers. <\/p>\n\n\n<div class=\"product product--small product--bordered module4\">\n    <div class=\"product__header\">\n        <div class=\"product__thumbnail\">\n\t\t\t<img alt=\"Image 2 : NASA\u00a0: le t\u00e9lescope spatial James Webb d\u00e9ploie son miroir avec succ\u00e8s\" decoding=\"async\" width=\"996\" height=\"1024\" src=\"https:\/\/www.tomsguide.fr\/content\/uploads\/sites\/2\/2020\/04\/71sv5n4loll--ac-sl1024-.jpg\" class=\"product__img wp-post-image\" alt=\"\" data-location=\"product-img--small\" srcset=\"https:\/\/www.tomsguide.fr\/content\/uploads\/sites\/2\/2020\/04\/71sv5n4loll--ac-sl1024-.jpg 996w, https:\/\/www.tomsguide.fr\/content\/uploads\/sites\/2\/2020\/04\/71sv5n4loll--ac-sl1024--292x300.jpg 292w, https:\/\/www.tomsguide.fr\/content\/uploads\/sites\/2\/2020\/04\/71sv5n4loll--ac-sl1024--150x154.jpg 150w, https:\/\/www.tomsguide.fr\/content\/uploads\/sites\/2\/2020\/04\/71sv5n4loll--ac-sl1024--200x206.jpg 200w, https:\/\/www.tomsguide.fr\/content\/uploads\/sites\/2\/2020\/04\/71sv5n4loll--ac-sl1024--250x257.jpg 250w, https:\/\/www.tomsguide.fr\/content\/uploads\/sites\/2\/2020\/04\/71sv5n4loll--ac-sl1024--300x308.jpg 300w, https:\/\/www.tomsguide.fr\/content\/uploads\/sites\/2\/2020\/04\/71sv5n4loll--ac-sl1024--350x360.jpg 350w, https:\/\/www.tomsguide.fr\/content\/uploads\/sites\/2\/2020\/04\/71sv5n4loll--ac-sl1024--400x411.jpg 400w, https:\/\/www.tomsguide.fr\/content\/uploads\/sites\/2\/2020\/04\/71sv5n4loll--ac-sl1024--450x463.jpg 450w, https:\/\/www.tomsguide.fr\/content\/uploads\/sites\/2\/2020\/04\/71sv5n4loll--ac-sl1024--500x514.jpg 500w, https:\/\/www.tomsguide.fr\/content\/uploads\/sites\/2\/2020\/04\/71sv5n4loll--ac-sl1024--550x565.jpg 550w, https:\/\/www.tomsguide.fr\/content\/uploads\/sites\/2\/2020\/04\/71sv5n4loll--ac-sl1024--600x617.jpg 600w, https:\/\/www.tomsguide.fr\/content\/uploads\/sites\/2\/2020\/04\/71sv5n4loll--ac-sl1024--640x658.jpg 640w, https:\/\/www.tomsguide.fr\/content\/uploads\/sites\/2\/2020\/04\/71sv5n4loll--ac-sl1024--710x730.jpg 710w, https:\/\/www.tomsguide.fr\/content\/uploads\/sites\/2\/2020\/04\/71sv5n4loll--ac-sl1024--755x776.jpg 755w\" sizes=\"(max-width: 996px) 100vw, 996px\" \/>        <\/div>\n\n        <div class=\"product__caption\">\n            <p class=\"product__title\">LEGO (60227) La station spatiale lunaire<\/p>\n\t\t\t                    <a href=\"https:\/\/www.amazon.fr\/Station-Spatiale-Construction-60227-Multicolore\/dp\/B07L4FNTH4?tag=tgufr_shopping_misc-21\"\n                       class=\"product__link button button--xround button--product\" target=\"_blank\"\n                       title=\"Commander le produit\">\n                    <span class=\"product__price\">40,99\u20ac                    <\/span> > Amazon                    <\/a>\n\t\t\t\t\n        <\/div>\n    <\/div>\n<\/div>\n\n\n<p>En orbite au point&nbsp;L2 de Lagrange \u00e0 environ <strong>1,5 million de kilom\u00e8tres<\/strong> de la Terre, ses <strong>18 miroirs hexagonaux<\/strong> lui conf\u00e8rent un pouvoir de r\u00e9solution de <strong>0,1 seconde d\u2019arc dans l\u2019infrarouge<\/strong>. Une pr\u00e9cision et une sensibilit\u00e9 qui doivent lui permettre de capturer des images des toutes premi\u00e8res \u00e9toiles et galaxies, et ainsi remonter jusqu\u2019\u00e0 quelques centaines de millions d\u2019ann\u00e9es apr\u00e8s le big-bang. Outre l\u2019\u00e9tude de l\u2019origine de l\u2019univers, le t\u00e9lescope spatial nous promet \u00e9galement des clich\u00e9s in\u00e9dits d\u2019exoplan\u00e8tes ou des ph\u00e9nom\u00e8nes cataclysmiques qui agitent l\u2019univers.<\/p>\n\n\n\n<p class=\"has-background has-very-light-gray-background-color\"><strong>NASA : Le retour de l\u2019Homme sur la Lune pourrait prendre un an de retard<\/strong><\/p>\n\n\n\n<p>Source : <a href=\"https:\/\/www.nasa.gov\/feature\/goddard\/2020\/nasa-s-james-webb-space-telescope-full-mirror-deployment-a-success\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"NASA (s\u2019ouvre dans un nouvel onglet)\">NASA<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Le t\u00e9lescope spatial James Webb vient de franchir une \u00e9tape capitale avant son lancement par Ariane 5 l\u2019ann\u00e9e prochaine. L\u2019engin vient en effet de d\u00e9ployer son immense miroir de 6,5 m de diam\u00e8tre pour la\u2026<\/p>","protected":false},"author":82,"featured_media":925230,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"ep_exclude_from_search":false,"footnotes":""},"categories":[494,3872],"tags":[],"hubs":[],"acf":{"display_mode":"medium-img","post_show_excerpt":true,"post_source":"","hide_sidebar":false,"hide_advertising":false},"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v21.5 (Yoast SEO v22.5) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>NASA\u00a0: le t\u00e9lescope spatial James Webb d\u00e9ploie son miroir avec succ\u00e8s<\/title>\n<meta name=\"description\" content=\"Le t\u00e9lescope spatial James Webb vient de franchir une \u00e9tape capitale avant son lancement par Ariane 5 l\u2019ann\u00e9e prochaine. 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