{"id":9005,"date":"2015-11-07T00:00:38","date_gmt":"2015-11-06T23:00:38","guid":{"rendered":"http:\/\/www.laterredufutur.com\/accueil\/?p=9005"},"modified":"2015-11-05T17:43:26","modified_gmt":"2015-11-05T16:43:26","slug":"latmosphere-de-la-comete-tchouri-contient-de-loxygene","status":"publish","type":"post","link":"https:\/\/www.laterredufutur.com\/accueil\/latmosphere-de-la-comete-tchouri-contient-de-loxygene\/","title":{"rendered":"L\u2019atmosph\u00e8re de la com\u00e8te Tchouri contient de l\u2019oxyg\u00e8ne"},"content":{"rendered":"<div class=\"1665f18d14f35dd9e7566e1a8ac9a3e9\" data-index=\"1\" style=\"float: none; margin:10px 0 10px 0; text-align:center;\">\n<script async src=\"https:\/\/pagead2.googlesyndication.com\/pagead\/js\/adsbygoogle.js\"><\/script>\r\n<ins class=\"adsbygoogle\"\r\n     style=\"display:block; text-align:center;\"\r\n     data-ad-layout=\"in-article\"\r\n     data-ad-format=\"fluid\"\r\n     data-ad-client=\"ca-pub-2860849627502538\"\r\n     data-ad-slot=\"3019501113\"><\/ins>\r\n<script>\r\n     (adsbygoogle = window.adsbygoogle || []).push({});\r\n<\/script>\n<\/div>\n<p style=\"text-align: justify;\">L\u2019atmosph\u00e8re de la com\u00e8te Tchouri contient de l\u2019oxyg\u00e8ne, \u00ab\u2009surprise totale\u2009\u00bb pour les scientifiques<br \/>\nLa sonde europ\u00e9enne Rosetta, qui gravite autour de la com\u00e8te, a d\u00e9couvert de l\u2019oxyg\u00e8ne en abondance.<\/p>\n<p style=\"text-align: justify;\">Les scientifiques sont stup\u00e9faits. La sonde europ\u00e9enne Rosetta, qui gravite autour de la com\u00e8te Tchouri, a d\u00e9couvert de l\u2019oxyg\u00e8ne en abondance dans son atmosph\u00e8re. \u00ab\u2009Une surprise totale\u2009\u00bb pour les scientifiques, qui pensent qu\u2019il faudra peut-\u00eatre revoir les mod\u00e8les sur la formation du syst\u00e8me solaire. La sonde Philae, qui s\u2019est pos\u00e9e sur la com\u00e8te en novembre 2014, a r\u00e9v\u00e9l\u00e9 dans l\u2019\u00e9t\u00e9 la pr\u00e9sence de quatre mol\u00e9cules organiques sur Tchouri . Rosetta s&rsquo;est empress\u00e9e de tweeter sa d\u00e9couverte<\/p>\n<p style=\"text-align: justify;\">Cet oxyg\u00e8ne mol\u00e9culaire (O2) pourrait \u00eatre plus ancien que notre syst\u00e8me solaire, a annonc\u00e9 une \u00e9tude publi\u00e9e mercredi dans la revue britannique Nature. \u00ab\u2009Il va peut-\u00eatre falloir modifier nos mod\u00e8les actuels sur la formation du syst\u00e8me solaire\u2009\u00bb, a d\u00e9clar\u00e9 \u00e0 l\u2019Agence France Presse (AFP) Andr\u00e9 Bieler, l\u2019un des auteurs de l\u2019\u00e9tude. Les mol\u00e9cules d&rsquo;oxyg\u00e8ne se seraient incorpor\u00e9es \u00e0 la com\u00e8te durant sa formation, rapporte l&rsquo;Agence spatiale europ\u00e9enne (ASE) .<\/p>\n<p style=\"text-align: justify;\"><a href=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2014\/11\/laterredufutur.com_photos_mission-rosetta-1.jpg\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" data-attachment-id=\"2273\" data-permalink=\"https:\/\/www.laterredufutur.com\/accueil\/a-la-conquete-de-la-comete-churyumov-gerasimenko\/laterredufutur-com_photos_mission-rosetta-1\/\" data-orig-file=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2014\/11\/laterredufutur.com_photos_mission-rosetta-1.jpg?fit=561%2C360&amp;ssl=1\" data-orig-size=\"561,360\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;0&quot;}\" data-image-title=\"laterredufutur.com_photos_mission-rosetta-1\" data-image-description=\"\" data-image-caption=\"\" data-large-file=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2014\/11\/laterredufutur.com_photos_mission-rosetta-1.jpg?fit=561%2C360&amp;ssl=1\" class=\"size-full wp-image-2273 aligncenter\" src=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2014\/11\/laterredufutur.com_photos_mission-rosetta-1.jpg?resize=561%2C360\" alt=\"laterredufutur.com_photos_mission-rosetta-1\" width=\"561\" height=\"360\" srcset=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2014\/11\/laterredufutur.com_photos_mission-rosetta-1.jpg?w=561&amp;ssl=1 561w, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2014\/11\/laterredufutur.com_photos_mission-rosetta-1.jpg?resize=300%2C193&amp;ssl=1 300w\" sizes=\"auto, (max-width: 561px) 100vw, 561px\" \/><\/a><\/p><div class=\"1665f18d14f35dd9e7566e1a8ac9a3e9\" data-index=\"2\" style=\"float: none; margin:10px 0 10px 0; text-align:center;\">\n<script async src=\"https:\/\/pagead2.googlesyndication.com\/pagead\/js\/adsbygoogle.js\"><\/script>\r\n<ins class=\"adsbygoogle\"\r\n     style=\"display:block; text-align:center;\"\r\n     data-ad-layout=\"in-article\"\r\n     data-ad-format=\"fluid\"\r\n     data-ad-client=\"ca-pub-2860849627502538\"\r\n     data-ad-slot=\"3019501113\"><\/ins>\r\n<script>\r\n     (adsbygoogle = window.adsbygoogle || []).push({});\r\n<\/script>\n<\/div>\n\n<p style=\"text-align: justify;\">3.000 \u00e9chantillons recueillis en sept mois<\/p>\n<p style=\"text-align: justify;\">Malgr\u00e9 le fait que l&rsquo;oxyg\u00e8ne soit le troisi\u00e8me \u00e9l\u00e9ment le plus abondant dans l&rsquo;Univers, sa version gazeuse, O2, s&rsquo;av\u00e8re \u00eatre tr\u00e8s rare \u00e0 d\u00e9tecter, avance l&rsquo;ASE. La difficult\u00e9 vient du fait que le gaz soit tr\u00e8s r\u00e9actif et se brise facilement pour former d&rsquo;autres atomes et mol\u00e9cules. Ainsi, de l&rsquo;oxyg\u00e8ne gazeux n&rsquo;avait encore jamais \u00e9t\u00e9 rep\u00e9r\u00e9 sur une com\u00e8te.<\/p>\n<p style=\"text-align: justify;\">L\u2019\u00e9quipe a analys\u00e9 plus de 3.000 \u00e9chantillons recueillis autour de la com\u00e8te entre septembre 2014 et mars 2015. \u00ab\u2009Cette d\u00e9couverte \u00e9tait impossible \u00e0 pr\u00e9voir du fait qu\u2019il n\u2019y a que tr\u00e8s peu d\u2019exemples de d\u00e9tection d\u2019O2 interstellaire. [&#8230;] La pr\u00e9sence de ce gaz n\u2019est pas facilement explicable par les mod\u00e8les actuels sur la formation du syst\u00e8me solaire\u2009\u00bb, d\u00e9crit Kathrin Altwegg, chercheuse \u00e0 l\u2019universit\u00e9 de Berne et principale investigatrice du spectrom\u00e8tre orbital de Rosetta.<\/p>\n<p style=\"text-align: justify;\"><a href=\"http:\/\/www.laterredufutur.com\/accueil\/\" target=\"_blank\">TDF<\/a><\/p>\n<p style=\"text-align: justify;\">source : <a href=\"http:\/\/www.lesechos.fr\/\" target=\"_blank\">http:\/\/www.lesechos.fr\/<\/a><\/p>\n<p class=\"bawpvc-ajax-counter\" data-id=\"9005\">(282)<\/p>\n<!--CusAds0-->\n<div style=\"font-size: 0px; height: 0px; line-height: 0px; margin: 0; padding: 0; clear: both;\"><\/div>","protected":false},"excerpt":{"rendered":"<p>L\u2019atmosph\u00e8re de la com\u00e8te Tchouri contient de l\u2019oxyg\u00e8ne, \u00ab\u2009surprise totale\u2009\u00bb pour les scientifiques La sonde europ\u00e9enne Rosetta, qui gravite autour&#8230;<\/p>\n","protected":false},"author":1,"featured_media":2271,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_exactmetrics_skip_tracking":false,"_exactmetrics_sitenote_active":false,"_exactmetrics_sitenote_note":"","_exactmetrics_sitenote_category":0,"ngg_post_thumbnail":0,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"L\u2019atmosph\u00e8re de la com\u00e8te Tchouri contient de l\u2019oxyg\u00e8ne @laterredufutur","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2},"jetpack_post_was_ever_published":false},"categories":[22],"tags":[2258,1521,538,286,2192,702,4966],"class_list":["post-9005","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-espace","tag-ase","tag-comete","tag-decouverte","tag-oxygene","tag-rosetta","tag-sonde","tag-tchouri","wpcat-22-id"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2014\/11\/laterredufutur.com_photos_mission-rosetta.jpg?fit=620%2C349&ssl=1","jetpack_shortlink":"https:\/\/wp.me\/p631RN-2lf","jetpack-related-posts":[{"id":12397,"url":"https:\/\/www.laterredufutur.com\/accueil\/rosetta-detecte-des-ingredients-de-la-vie-dans-la-comete-tchouri\/","url_meta":{"origin":9005,"position":0},"title":"Rosetta d\u00e9tecte des ingr\u00e9dients de la vie dans la com\u00e8te Tchouri","author":"Admin","date":"29 mai 2016","format":false,"excerpt":"De la glycine et du phosphore, ingr\u00e9dients consid\u00e9r\u00e9s comme cruciaux pour l'origine de la vie sur Terre, ont \u00e9t\u00e9 d\u00e9couverts dans la com\u00e8te 67P\/Tchourioumov-Gu\u00e9rassimenko, que la sonde Rosetta de l'ESA explore depuis presque deux ans. C'\u00e9tait l'une des missions de Rosetta. La sonde de l'Agence spatiale europ\u00e9enne (ESA) l'a remplie.\u2026","rel":"","context":"Dans &quot;Espace&quot;","block_context":{"text":"Espace","link":"https:\/\/www.laterredufutur.com\/accueil\/sujets\/espace\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2016\/05\/roseta-comete.jpg?fit=1000%2C560&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2016\/05\/roseta-comete.jpg?fit=1000%2C560&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2016\/05\/roseta-comete.jpg?fit=1000%2C560&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2016\/05\/roseta-comete.jpg?fit=1000%2C560&ssl=1&resize=700%2C400 2x"},"classes":[]},{"id":13486,"url":"https:\/\/www.laterredufutur.com\/accueil\/exceptionnelle-video-de-la-descente-de-rosetta\/","url_meta":{"origin":9005,"position":1},"title":"Exceptionnelle Video de la descente de Rosetta","author":"Admin","date":"1 octobre 2016","format":false,"excerpt":"La sonde exp\u00e9di\u00e9e dans l'espace par l'Agence spatiale europ\u00e9enne s'est \u00e9cras\u00e9e dans un gouffre de la com\u00e8te Tchouri. Un saut de l'ange diffus\u00e9 en direct diff\u00e9r\u00e9. Un \u00e9v\u00e9nement tout \u00e0 fait historique. This is the end. Ce vendredi 30 septembre 2016, la sonde Rosetta de l'Agence spatiale europ\u00e9enne (ESA) a\u2026","rel":"","context":"Dans &quot;Espace&quot;","block_context":{"text":"Espace","link":"https:\/\/www.laterredufutur.com\/accueil\/sujets\/espace\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2016\/10\/tchouri.jpg?fit=599%2C446&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2016\/10\/tchouri.jpg?fit=599%2C446&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2016\/10\/tchouri.jpg?fit=599%2C446&ssl=1&resize=525%2C300 1.5x"},"classes":[]},{"id":2277,"url":"https:\/\/www.laterredufutur.com\/accueil\/a-la-conquete-de-la-comete-churyumov-gerasimenko\/","url_meta":{"origin":9005,"position":2},"title":"A la conqu\u00eate de la com\u00e8te Churyumov Gerasimenko","author":"Admin","date":"11 novembre 2014","format":false,"excerpt":"L'ach\u00e8vement d'un travail de plus de dix ans: ce 12 novembre, la sonde Rosetta, lanc\u00e9e le 2 mars 2004 \u00e0 l'assaut de la fameuse com\u00e8te en forme de canard 67P\/Tchourioumov-Gu\u00e9rassimenko (\u00abTchouri\u00bb pour les intimes) s'est s\u00e9par\u00e9 de Philae, autre sonde dont l'objectif est de se poser \u00e0 la surface de\u2026","rel":"","context":"Dans &quot;Espace&quot;","block_context":{"text":"Espace","link":"https:\/\/www.laterredufutur.com\/accueil\/sujets\/espace\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.laterredufutur.com\/wordpress\/wp-content\/uploads\/2014\/11\/laterredufutur.com_photos_comete-churyumov-4.jpg?resize=350%2C200","width":350,"height":200},"classes":[]},{"id":2147,"url":"https:\/\/www.laterredufutur.com\/accueil\/la-sonde-rosetta-en-route-vers-une-comete-plus-etrange-que-prevue\/","url_meta":{"origin":9005,"position":3},"title":"La sonde Rosetta en route vers une com\u00e8te plus \u00e9trange que pr\u00e9vue","author":"Admin","date":"22 juillet 2014","format":false,"excerpt":"Alors que la sonde Rosetta se rapproche de plus en plus de son objectif, les scientifiques de l'Agence spatiale europ\u00e9enne (ESA) ont fait une d\u00e9couverte inattendue : la com\u00e8te Churyumov-Gerasimenko que Rosetta doit \u00e9tudier est compos\u00e9e de deux morceaux distincts. \u00a0","rel":"","context":"Dans &quot;Espace&quot;","block_context":{"text":"Espace","link":"https:\/\/www.laterredufutur.com\/accueil\/sujets\/espace\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":7346,"url":"https:\/\/www.laterredufutur.com\/accueil\/philae-sest-reveille-de-son-hibernation-sur-la-comete\/","url_meta":{"origin":9005,"position":4},"title":"Philae s&rsquo;est r\u00e9veill\u00e9 de son hibernation sur la com\u00e8te","author":"Admin","date":"15 juin 2015","format":false,"excerpt":"Apr\u00e8s sept mois sans donner de nouvelles, le robot largu\u00e9 sur une com\u00e8te par la sonde Rosetta a donn\u00e9 de ses nouvelles dans la nuit de samedi \u00e0 dimanche. Philae s'est r\u00e9veill\u00e9 apr\u00e8s sept mois d'hibernation sur la com\u00e8te 67P\/Tchourioumov-Guerassimenko. A 22h28 (20h28 GMT) samedi soir, le petit robot a\u2026","rel":"","context":"Dans &quot;Espace&quot;","block_context":{"text":"Espace","link":"https:\/\/www.laterredufutur.com\/accueil\/sujets\/espace\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2015\/06\/philae.jpg?fit=805%2C453&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2015\/06\/philae.jpg?fit=805%2C453&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2015\/06\/philae.jpg?fit=805%2C453&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2015\/06\/philae.jpg?fit=805%2C453&ssl=1&resize=700%2C400 2x"},"classes":[]},{"id":26070,"url":"https:\/\/www.laterredufutur.com\/accueil\/le-soufre-est-a-lorigine-de-la-premiere-eau-sur-terre\/","url_meta":{"origin":9005,"position":5},"title":"Le soufre est \u00e0 l&rsquo;origine de la premi\u00e8re eau sur Terre","author":"Admin","date":"20 juillet 2024","format":false,"excerpt":"Cette d\u00e9couverte sugg\u00e8re que toutes les plan\u00e8tes rocheuses sont recouvertes d'eau peu apr\u00e8s leur naissance, ce qui augmente les chances de d\u00e9veloppement de la vie. Selon une nouvelle \u00e9tude, c'est gr\u00e2ce \u00e0 un \u00e9l\u00e9ment chimique qui n'est m\u00eame pas pr\u00e9sent dans l'H2O - le soufre - que la Terre a\u2026","rel":"","context":"Dans &quot;Divers&quot;","block_context":{"text":"Divers","link":"https:\/\/www.laterredufutur.com\/accueil\/sujets\/divers\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2023\/07\/ocean-plage.jpg?fit=1200%2C798&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2023\/07\/ocean-plage.jpg?fit=1200%2C798&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2023\/07\/ocean-plage.jpg?fit=1200%2C798&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2023\/07\/ocean-plage.jpg?fit=1200%2C798&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2023\/07\/ocean-plage.jpg?fit=1200%2C798&ssl=1&resize=1050%2C600 3x"},"classes":[]}],"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/posts\/9005","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/comments?post=9005"}],"version-history":[{"count":1,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/posts\/9005\/revisions"}],"predecessor-version":[{"id":9006,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/posts\/9005\/revisions\/9006"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/media\/2271"}],"wp:attachment":[{"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/media?parent=9005"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/categories?post=9005"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/tags?post=9005"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}