{"id":2569,"date":"2018-03-01T21:48:49","date_gmt":"2018-03-01T20:48:49","guid":{"rendered":"http:\/\/www.astro-ge.net\/?p=2569"},"modified":"2018-04-27T18:27:58","modified_gmt":"2018-04-27T17:27:58","slug":"conference-sur-le-james-webb-telescope","status":"publish","type":"post","link":"https:\/\/www.astro-ge.net\/?p=2569","title":{"rendered":"Conf\u00e9rence sur le James Webb Telescope"},"content":{"rendered":"<p><iframe loading=\"lazy\" style=\"border: none; overflow: hidden; height: 30px;\" src=\"\/\/www.facebook.com\/plugins\/like.php?href=http%3A%2F%2Fwww.astro-ge.net%2F%3Fp%3D2569&amp;width&amp;layout=standard&amp;action=like&amp;show_faces=true&amp;share=true&amp;height=80\" scrolling=\"no\" width=\"300\" height=\"150\" frameborder=\"0\"><span style=\"display: inline-block; width: 0px; overflow: hidden; line-height: 0;\" data-mce-type=\"bookmark\" class=\"mce_SELRES_start\">\ufeff<\/span><span style=\"display: inline-block; width: 0px; overflow: hidden; line-height: 0;\" data-mce-type=\"bookmark\" class=\"mce_SELRES_start\">\ufeff<\/span><span style=\"display: inline-block; width: 0px; overflow: hidden; line-height: 0;\" data-mce-type=\"bookmark\" class=\"mce_SELRES_start\">\ufeff<\/span><span style=\"display: inline-block; width: 0px; overflow: hidden; line-height: 0;\" data-mce-type=\"bookmark\" class=\"mce_SELRES_start\">\ufeff<\/span><span style=\"display: inline-block; width: 0px; overflow: hidden; line-height: 0;\" data-mce-type=\"bookmark\" class=\"mce_SELRES_start\">\ufeff<\/span><span style=\"display: inline-block; width: 0px; overflow: hidden; line-height: 0;\" data-mce-type=\"bookmark\" class=\"mce_SELRES_start\">\ufeff<\/span><span style=\"display: inline-block; width: 0px; overflow: hidden; line-height: 0;\" data-mce-type=\"bookmark\" class=\"mce_SELRES_start\">\ufeff<\/span><\/iframe><\/p>\n<blockquote>\n<p style=\"text-align: center;\">Venez nombreux \u00e0 notre prochaine conf\u00e9rence publique qui aura lieu le <strong>vendredi 20 avril \u00e0 20h00 <\/strong>\u00e0 la Aula du <a href=\"https:\/\/www.google.ch\/maps\/place\/Coll%C3%A8ge+de+Saussure\/@46.1852725,6.111991,17z\/data=!3m1!4b1!4m5!3m4!1s0x478c7b47461ae179:0xfa0cfb22a3879c2e!8m2!3d46.1852725!4d6.1141797?hl=fr\" target=\"_blank\" rel=\"noopener\">coll\u00e8ge de Saussure au Petit Lancy<\/a>.<\/p>\n<\/blockquote>\n<hr>\n<p><a href=\"https:\/\/www.astro-ge.net\/wordpress\/wp-content\/uploads\/2018\/03\/180420-JWST-Bratschi.pdf\" target=\"_blank\" rel=\"noopener\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-2568 alignright\" src=\"https:\/\/www.astro-ge.net\/wordpress\/wp-content\/uploads\/2018\/03\/180420-JWST-Bratschi.jpg\" alt=\"\" width=\"273\" height=\"382\"><\/a>Malgr\u00e9 des images spectaculaires et des r\u00e9sultats scientifiques exceptionnels, le Hubble Space Telescope arrive \u00e0 la fin de sa mission. La NASA a donc d\u00e9cid\u00e9 de le remplacer par un instrument plus puissant et d\u00e9di\u00e9 \u00e0 l\u2019\u00e9tude du rayonnement infra-rouge, le James Webb Space Telescope (JWST). Grace \u00e0 sa position \u00e0 env. 1.5 millions de kilom\u00e8tres de la terre, cet instrument permettra d\u2019observer des \u00e9v\u00e8nements et objets dans l\u2019Univers qu\u2019aucun autre instrument actuel permet observer. Ceci inclut, entre autres, l\u2019\u00e9tude de la formation des \u00e9toiles et plan\u00e8tes, des premi\u00e8res galaxies, ainsi que l\u2019observation par imagerie directe d\u2019exoplan\u00e8tes et novas.<\/p>\n<p>Le JWST a un diam\u00e8tre de 6.5 m\u00e8tres, or aucune fus\u00e9e ne peut lancer un instrument de cette taille, il faudra donc le plier. Comment plier et d\u00e9plier un tel engin dans l&rsquo;espace ? Les Europ\u00e9ens (ESA) sont fortement impliqu\u00e9s dans le programme du JWST puisque ce sont eux qui ont la lourde responsabilit\u00e9 de le lancer \u00e0 l\u2019aide d\u2019une fus\u00e9e Ariane 5 entre mars et juin 2019 (pr\u00e9visions actuelles).<\/p>\n<p>Le d\u00e9fi du d\u00e9ploiement du miroir de 6.5m dans l\u2019espace est bien illustr\u00e9 dans cette vid\u00e9o :<\/p>\n<p><a href=\"https:\/\/www.youtube.com\/watch?v=LiHG-hzeOnM\">https:\/\/www.youtube.com\/watch?v=LiHG-hzeOnM<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\ufeff\ufeff\ufeff\ufeff\ufeff\ufeff\ufeff Venez nombreux \u00e0 notre prochaine conf\u00e9rence publique qui aura lieu le vendredi 20 avril \u00e0 20h00 \u00e0 la Aula du coll\u00e8ge de Saussure au Petit Lancy. Malgr\u00e9 des images spectaculaires et des r\u00e9sultats scientifiques exceptionnels, le Hubble Space Telescope &hellip; <a href=\"https:\/\/www.astro-ge.net\/?p=2569\">Continuer la lecture <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":8,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[8],"tags":[],"class_list":["post-2569","post","type-post","status-publish","format-standard","hentry","category-soirees_publiques"],"_links":{"self":[{"href":"https:\/\/www.astro-ge.net\/index.php?rest_route=\/wp\/v2\/posts\/2569","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.astro-ge.net\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.astro-ge.net\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.astro-ge.net\/index.php?rest_route=\/wp\/v2\/users\/8"}],"replies":[{"embeddable":true,"href":"https:\/\/www.astro-ge.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=2569"}],"version-history":[{"count":0,"href":"https:\/\/www.astro-ge.net\/index.php?rest_route=\/wp\/v2\/posts\/2569\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.astro-ge.net\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2569"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.astro-ge.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=2569"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.astro-ge.net\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=2569"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}