{"id":481,"date":"2016-08-09T11:53:00","date_gmt":"2016-08-09T09:53:00","guid":{"rendered":"https:\/\/kids.esa.int\/here_come_the_perseids5\/"},"modified":"2026-10-08T00:28:43","modified_gmt":"2026-10-07T22:28:43","slug":"here_come_the_perseids5","status":"publish","type":"post","link":"https:\/\/kids.esa.int\/fr\/here_come_the_perseids5\/","title":{"rendered":"Voici les Pers\u00e9ides !"},"content":{"rendered":"<div class=\"lede\">\n<p>Les amateurs d'astronomie vont se r\u00e9galer cette semaine, alors que la pluie d'\u00e9toiles filantes annuelle des Pers\u00e9ides atteindra son apog\u00e9e ! Si vous n'avez jamais vu d'\u00e9toile filante, c'est l'occasion r\u00eav\u00e9e. Le pic d'activit\u00e9 est pr\u00e9vu entre le 11 et le 13 ao\u00fbt. \u00c9loignez-vous des lumi\u00e8res vives, laissez vos yeux s'habituer \u00e0 l'obscurit\u00e9, puis allongez-vous et contemplez le ciel !<\/p>\n<\/div>\n<figure class=\"wp-block-image size-natural\" data-width=\"550\" data-credit=\"NASA\" data-detail-url=\"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2013\/07\/perseid_map2\" data-licence=\"ESA Standard Licence\" data-licence-url=\"https:\/\/www.esa.int\/ESA_Multimedia\/Terms_and_conditions_of_use_of_images_and_videos_available_on_the_esa_website\"><img decoding=\"async\" loading=\"lazy\" style=\"max-width:100%;height:auto\" src=\"https:\/\/www.esa.int\/var\/esa\/storage\/images\/esa_multimedia\/images\/2013\/07\/perseid_map2\/17878589-2-eng-GB\/perseid_map2.gif\" alt=\"\"><\/figure>\n<p>Les Pers\u00e9ides tirent leur nom de la constellation de Pers\u00e9e, d\u2019o\u00f9 elles semblent rayonner. Malgr\u00e9 tout, elles peuvent appara\u00eetre n\u2019importe o\u00f9 dans le ciel. Pour les apercevoir, nous vous conseillons d\u2019observer les zones les plus obscures du ciel, g\u00e9n\u00e9ralement droit au-dessus de vous. C\u2019est \u00e0 partir de onze heures ou minuit que vous observerez le mieux la pluie de m\u00e9t\u00e9ores. Vous pourrez en distinguer jusqu\u2019\u00e0 une centaine par heure !<\/p>\n<p>Les Pers\u00e9ides sont compos\u00e9s de d\u00e9bris rocheux de la taille d\u2019un grain de sable \u00e0 celle d\u2019un petit pois. Ces m\u00e9t\u00e9ores proviennent de Swift-Tuttle, un grosse com\u00e8te qui se d\u00e9sint\u00e8gre progressivement en orbite autour du Soleil. Depuis des si\u00e8cles, ses r\u00e9sidus friables s\u2019\u00e9tendent derri\u00e8re son orbite pour former un flux de particules de plusieurs millions de kilom\u00e8tres.<\/p>\n<p>La trajectoire de la Terre autour du Soleil nous fait traverser ces d\u00e9bris com\u00e9taires chaque mi-ao\u00fbt. Ces particules, appel\u00e9es \u2018 m\u00e9t\u00e9oro\u00efdes \u2019, se d\u00e9placent \u00e0 une vitesse de 60 km par seconde par rapport \u00e0 la Terre. Lorsqu\u2019une d\u2019entre elles percute la haute atmosph\u00e8re, elle cr\u00e9e une tra\u00een\u00e9e incandescente d\u2019air surchauff\u00e9. Les plus brillantes d\u2019entre elles, plus rares, persistent pendant plusieurs secondes, laissant derri\u00e8re elles des tra\u00een\u00e9es de fum\u00e9e et de gaz incandescents.<\/p>\n<p>Les Pers\u00e9ides sont parfaits pour la photographie num\u00e9rique. Fixez votre appareil photo sur un tr\u00e9pied, utilisez un objectif grand angle et des param\u00e8tres ISO \u00e9lev\u00e9s en raison de l\u2019obscurit\u00e9. R\u00e9glez la vitesse d\u2019obturation entre 10 et 15 secondes, voire plus longtemps dans les endroits tr\u00e8s sombres. Avec un peu de chance, vous parviendrez \u00e0 immortaliser le passage d\u2019un ou plusieurs m\u00e9t\u00e9ores !<\/p>","protected":false},"excerpt":{"rendered":"<p>Sky watchers will be in for a treat this week, when the annual Perseid meteor shower reaches its peak! If you&#8217;ve never seen a meteor before, this is the ideal [&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\/2013\/07\/perseids_meteor_shower\/17888431-2-eng-GB\/Perseids_meteor_shower.jpg","esa_banner_description":"Perseids meteor shower","esa_banner_credit":"Ali Jarekji, Reuters","esa_banner_licence":"ESA Standard Licence","esa_banner_detail_url":"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2013\/07\/Perseids_meteor_shower","esa_external_url":"","esa_external_new_window":false,"_jetpack_feature_clip_id":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_post_was_ever_published":true},"categories":[26],"tags":[],"panel":[],"language":[],"age":[],"duration":[],"resource_type":[],"audience":[],"wf_post_folders":[],"class_list":["post-481","post","type-post","status-publish","format-standard","hentry","category-news"],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/posts\/481","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/comments?post=481"}],"version-history":[{"count":5,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/posts\/481\/revisions"}],"predecessor-version":[{"id":4509,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/posts\/481\/revisions\/4509"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/media?parent=481"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/categories?post=481"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/tags?post=481"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/panel?post=481"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/language?post=481"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/age?post=481"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/duration?post=481"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/resource_type?post=481"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/audience?post=481"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/wf_post_folders?post=481"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}