{"id":7939,"date":"2017-06-01T15:32:01","date_gmt":"2017-06-01T15:32:01","guid":{"rendered":"https:\/\/blogs.futura-sciences.com\/feldmann\/?p=7939"},"modified":"2017-06-08T16:47:36","modified_gmt":"2017-06-08T16:47:36","slug":"video-miroir-geant-jwst-arrive-a-houston","status":"publish","type":"post","link":"https:\/\/blogs.futura-sciences.com\/feldmann\/2017\/06\/01\/video-miroir-geant-jwst-arrive-a-houston\/","title":{"rendered":"En vid\u00e9o : le miroir g\u00e9ant du JWST est arriv\u00e9 \u00e0 Houston"},"content":{"rendered":"<p><strong>Le miroir de 6,5 m\u00e8tres de diam\u00e8tre du James Webb Space Telescope (JWST) a rejoint le centre spatial Johnson de la NASA \u00e0 Houston pour de nouveaux tests.<\/strong><\/p>\n<p>La fin du mois de mai 2017 a marqu\u00e9 un tournant dans le d\u00e9veloppement du <a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2015\/10\/27\/la-monture-du-telescope-spatial-james-webb-est-prete\/\" target=\"_blank\" rel=\"noopener noreferrer\"><em>James Webb Space Telescope<\/em><\/a>. Jusqu&#8217;\u00e0 pr\u00e9sent c&#8217;est au <a href=\"https:\/\/www.nasa.gov\/goddard\" target=\"_blank\" rel=\"noopener noreferrer\"><em>Goddard Space Flight Center<\/em><\/a> \u00e0 Greenbelt dans le Maryland (l\u00e0 o\u00f9 la <a href=\"https:\/\/www.nasa.gov\/\" target=\"_blank\" rel=\"noopener noreferrer\">NASA<\/a> dispose de la plus grande salle blanche du monde pour r\u00e9aliser et tester ses syst\u00e8mes spatiaux), que s&#8217;\u00e9tait d\u00e9roul\u00e9 l&#8217;assemblage des dix-huit segments en b\u00e9ryllium recouverts d\u2019or qui constituent le miroir principal du prochain t\u00e9lescope spatial.<\/p>\n\n<!-- iframe plugin v.5.1 wordpress.org\/plugins\/iframe\/ -->\n<iframe loading=\"lazy\" width=\"560\" height=\"315\" src=\"https:\/\/www.youtube.com\/embed\/t6eGygs0gLU\" frameborder=\"0\" 0=\"allowfullscreen&gt;&lt;\/iframe\" scrolling=\"yes\" class=\"iframe-class\"><\/iframe>\n\n<p>Ce miroir g\u00e9ant a rejoint le <a href=\"https:\/\/www.nasa.gov\/centers\/johnson\/home\/index.html\" target=\"_blank\" rel=\"noopener noreferrer\"><em>Johnson Space Center<\/em><\/a> \u00e0 Houston, au Texas, pour y subir pendant une centaine de jours des tests cryog\u00e9niques sous vide dans le <em>Space Environment Simulation<\/em>, une grande chambre \u00e0 vide de 19 m de diam\u00e8tre con\u00e7ue dans les ann\u00e9es 1960 pour tester les vaisseaux du programme <a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2016\/11\/23\/47-ans-apres-apollo-11-margaret-hamilton-enfin-recompensee\/\" target=\"_blank\" rel=\"noopener noreferrer\">Apollo<\/a>.<!--more--><\/p>\n<p>Pour aller du Maryland au Texas, le miroir du JWST a voyag\u00e9 en camion dans un conteneur climatis\u00e9 appel\u00e9<a href=\"https:\/\/www.flickr.com\/photos\/nasawebbtelescope\/16402559521\" target=\"_blank\" rel=\"noopener noreferrer\"> STTARS<\/a> (<em>Space Telescope Transporter for Air Road and Sea<\/em>) et en avion cargo <em>Lockheed C-5 Galaxy<\/em>, un avion de transport militaire lourd. Comme le montre la vid\u00e9o, le trajet routier a n\u00e9cessit\u00e9 le d\u00e9placement de certaines lignes \u00e9lectriques et de quelques feux de signalisation.<\/p>\n<p>Si tout se passe bien le JWST sera lanc\u00e9 en 2018 depuis la base de Kourou en Guyane \u00e0 l\u2019aide d\u2019une fus\u00e9e <a href=\"http:\/\/www.futura-sciences.com\/sciences\/definitions\/univers-ariane-5-3455\/\" target=\"_blank\" rel=\"noopener noreferrer\">Ariane 5<\/a> puis plac\u00e9 sur une orbite \u00e0 1,5 million de kilom\u00e8tres de la Terre pour mener \u00e0 bien ses observations.<\/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>Le miroir de 6,5 m\u00e8tres de diam\u00e8tre du James Webb Space Telescope (JWST) a rejoint le centre spatial Johnson de la NASA \u00e0 Houston pour de nouveaux tests. La fin du mois de mai 2017 a marqu\u00e9 un tournant dans le d\u00e9veloppement du James Webb Space Telescope. Jusqu&#8217;\u00e0 pr\u00e9sent c&#8217;est au Goddard Space Flight Center &hellip; <a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2017\/06\/01\/video-miroir-geant-jwst-arrive-a-houston\/\" class=\"more-link\">Continuer la lecture de <span class=\"screen-reader-text\">En vid\u00e9o : le miroir g\u00e9ant du JWST est arriv\u00e9 \u00e0 Houston<\/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":7941,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","_links_to":"","_links_to_target":""},"categories":[509],"tags":[181,1108,1304,2241,741,486,2242,2243,1013],"class_list":["post-7939","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-actualites","tag-apollo","tag-ariane-5","tag-goddard-space-flight-center","tag-johnson-space-center","tag-jwst","tag-nasa","tag-space-environment-simulation","tag-sttars","tag-video"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.1 - 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