{"id":620,"date":"2013-10-15T07:31:00","date_gmt":"2013-10-15T05:31:00","guid":{"rendered":"https:\/\/kids.esa.int\/time_to_wake_up_rosetta\/"},"modified":"2026-10-08T00:30:22","modified_gmt":"2026-10-07T22:30:22","slug":"time_to_wake_up_rosetta","status":"publish","type":"post","link":"https:\/\/kids.esa.int\/fr\/time_to_wake_up_rosetta\/","title":{"rendered":"Il est temps de se r\u00e9veiller, Rosetta !"},"content":{"rendered":"<div class=\"lede\">\n<p>Rosetta, la sonde chasseuse de com\u00e8tes de l\u2019ESA, va se r\u00e9veiller le 20 janvier 2014 \u00e0 10h00 GMT, apr\u00e8s une longue hibernation spatiale. Lanc\u00e9e le 2 mars 2004, Rosetta se dirige actuellement vers sa destination, la com\u00e8te 67P\/Churyumov-Gerasimenko, qu\u2019elle devrait atteindre en mars 2014.<\/p>\n<\/div>\n<p>La sonde spatiale de l\u2019ESA est entr\u00e9e en hibernation spatiale profonde il y a un peu plus d\u2019un an, alors qu\u2019elle se trouvait d\u00e9j\u00e0 \u00e0 plus de 800 millions de kilom\u00e8tres du Soleil. Le vaisseau a alors \u00e9t\u00e9 r\u00e9orient\u00e9 et ses panneaux solaires ont \u00e9t\u00e9 positionn\u00e9s face au Soleil pour recevoir le plus de lumi\u00e8re possible. Rosetta a \u00e9galement \u00e9t\u00e9 plac\u00e9e en rotation lente pour maintenir sa stabilit\u00e9.<\/p>\n<p>La com\u00e8te 67P\/Churyumov-Gerasimenko et la sonde de l\u2019ESA s\u2019appr\u00eatent maintenant \u00e0 faire leur retour dans notre syst\u00e8me solaire interne. Toute l\u2019\u00e9quipe de la mission Rosetta se pr\u00e9pare donc \u00e0 sortir la sonde de son hibernation.<\/p>\n<p>Le r\u00e9veil interne de Rosetta a \u00e9t\u00e9 programm\u00e9 au 20 janvier 2014 \u00e0 10h00 GMT.<\/p>\n<\/p>\n<p>Une fois r\u00e9veill\u00e9e, la sonde va commencer par r\u00e9chauffer doucement ses instruments de navigation avant d\u2019effectuer une rotation lui permettant de pointer son antenne principale vers la Terre, pour donner un premier signe de vie \u00e0 son \u00e9quipe.<\/p>\n<p>Au d\u00e9but du mois de mai 2014, Rosetta devrait encore se situer \u00e0 environ 2 millions de kilom\u00e8tres de la com\u00e8te, avant de s'aligner avec elle en pr\u00e9vision du rendez-vous entre les deux objets c\u00e9lestes, qui devrait avoir lieu en ao\u00fbt.<\/p>\n<p>Les premi\u00e8res images distantes de la com\u00e8te 67P\/Churyumov-Gerasimenko sont attendues pour le mois de mai. En se rapprochant de sa cible, Rosetta prendra des milliers d\u2019images qui devraient nous permettre d\u2019en savoir plus sur les principales caract\u00e9ristiques de la com\u00e8te, mais aussi sur sa vitesse de rotation et l\u2019orientation de son axe de rotation.<\/p>\n<p>Ce sera la premi\u00e8re fois que nous pourrons analyser une com\u00e8te sur une p\u00e9riode prolong\u00e9e. Nous ne nous contenterons pas d\u2019un survol ! Nous devrions ainsi pouvoir mieux comprendre le fonctionnement des com\u00e8tes, tout comme leur r\u00f4le dans la formation du syst\u00e8me solaire.<\/p>","protected":false},"excerpt":{"rendered":"<p>Rosetta, ESA\u2019s comet-chasing mission, will wake up from a deep-space hibernation at 10:00 GMT on 20 January! Launched on 2 March 2004, it is on its way to Comet 67P\/Churyumov-Gerasimenko, [&hellip;]<\/p>\n","protected":false},"author":5,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"esa_banner_image":"https:\/\/www.esa.int\/var\/esa\/storage\/images\/esa_multimedia\/images\/2002\/01\/rosetta_orbits_comet_with_lander_on_its_surface2\/17864159-3-eng-GB\/Rosetta_orbits_comet_with_lander_on_its_surface.jpg","esa_banner_description":"Rosetta orbits comet with lander on its surface","esa_banner_credit":"Astrium - E. 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