{"id":405,"date":"2018-04-06T09:36:00","date_gmt":"2018-04-06T07:36:00","guid":{"rendered":"https:\/\/kids.esa.int\/when_sparks_fly_how_to_watch_lightning_from_space\/"},"modified":"2026-10-08T00:27:48","modified_gmt":"2026-10-07T22:27:48","slug":"when_sparks_fly_how_to_watch_lightning_from_space","status":"publish","type":"post","link":"https:\/\/kids.esa.int\/fr\/when_sparks_fly_how_to_watch_lightning_from_space\/","title":{"rendered":"Quand les \u00e9clairs volent : observation de la foudre depuis l\u2019espace"},"content":{"rendered":"<div class=\"lede\">\n<p>Quand avez-vous vu pour la derni\u00e8re fois un orage ? Ce ph\u00e9nom\u00e8ne climatique, relativement fr\u00e9quent sur Terre, entra\u00eene la formation de d\u00e9charges \u00e9lectriques qui se manifestent sous la forme de foudre dans notre atmosph\u00e8re. Nous n\u2019avons pas encore \u00e9clairci tous les myst\u00e8res de la foudre, mais une observation r\u00e9alis\u00e9e par un astronaute de l\u2019ESA a donn\u00e9 de quoi r\u00e9fl\u00e9chir \u00e0 toute la communaut\u00e9 scientifique.<\/p>\n<\/div>\n<p>L\u2019astronaute Andreas Mogensen a effectu\u00e9 une longue mission \u00e0 bord de la Station spatiale internationale en 2015. Alors qu\u2019il se trouvait en orbite au-dessus de l\u2019Inde, il a point\u00e9 un appareil de haute technologie en direction d\u2019un \u00e9norme orage en contrebas. Andreas a alors aper\u00e7u un jet bleu dans les couches sup\u00e9rieures de l\u2019atmosph\u00e8re terrestre. Ce jet bleu a atteint une altitude de 40 kilom\u00e8tres, soit plus de quatre fois la taille du mont Everest!<\/p>\n<figure class=\"wp-block-image size-large\" data-width=\"781\" data-credit=\"Terma\/DTU\" data-detail-url=\"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2018\/04\/Atmosphere-Space_Interactions_Monitor\" 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\/2018\/04\/atmosphere-space_interactions_monitor\/17892427-2-eng-GB\/Atmosphere-Space_Interactions_Monitor.jpg\" alt=\"Atmosphere-Space Interactions Monitor\"><figcaption>Moniteur des interactions entre l'atmosph\u00e8re et l'espace<\/figcaption><\/figure>\n<p>Ces images spectaculaires \u00e9taient les premi\u00e8res du genre. L\u2019enregistrement r\u00e9alis\u00e9 par Andreas de cet \u00e9trange jet a montr\u00e9 qu\u2019il restait encore beaucoup \u00e0 d\u00e9couvrir sur l\u2019activit\u00e9 \u00e9lectrique au sommet des orages. Les scientifiques ont commenc\u00e9 \u00e0 comprendre quels types de nuages peuvent d\u00e9clencher ces jets bleus, et comment ceux-ci modifient la composition chimique de l'air qui les entoure. Cela a \u00e9galement d\u00e9montr\u00e9 \u00e0 quel point la Station spatiale internationale est utile pour observer la Terre et ses orages, car cette d\u00e9couverte n'aurait jamais pu \u00eatre faite depuis le sol.<\/p>\n<figure class=\"wp-block-image size-large\" data-width=\"1789\" data-credit=\"ESA CDF\" data-detail-url=\"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2018\/04\/ASIM_on_Columbus2\" 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\/2018\/04\/asim_on_columbus2\/17870523-2-eng-GB\/ASIM_on_Columbus.jpg\" alt=\"ASIM on Columbus\"><figcaption>ASIM \u00e0 Columbus<\/figcaption><\/figure>\n<p>Les scientifiques disposeront bient\u00f4t d\u2019un nouvel outil pour \u00e9tudier les orages. Le moniteur des interactions entre l\u2019atmosph\u00e8re et l'espace (ou ASIM) comprend un ensemble de cam\u00e9ras, de photom\u00e8tres et de d\u00e9tecteurs pour rayons X et rayons gamma. En cours d\u2019exp\u00e9dition vers la Station spatiale internationale, ASIM va \u00eatre fix\u00e9 \u00e0 l\u2019ext\u00e9rieur du laboratoire spatial Columbus de l\u2019ESA. L\u2019une de nos meilleures technologies sera ainsi disponible dans l\u2019un des meilleurs endroits pour observer la foudre.<\/p>\n<figure class=\"wp-block-image size-large\" data-width=\"4928\" data-credit=\"ESA\/NASA\" data-detail-url=\"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2018\/04\/Lightning\" 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\/2018\/04\/lightning\/17906274-2-eng-GB\/Lightning.jpg\" alt=\"Lightning\"><figcaption>La foudre<\/figcaption><\/figure>\n<p>Ce projet est tr\u00e8s important car la foudre peut affecter les gaz de l'atmosph\u00e8re, qui sont susceptibles d\u2019impacter le climat de notre plan\u00e8te. Les mesures enregistr\u00e9es par ASIM dans l\u2019espace seront combin\u00e9es aux informations collect\u00e9es par les satellites et les stations terrestres dans le monde entier. Plus de 100 experts travaillent d\u00e9j\u00e0 sur ce projet \u00e0 travers huit pays.<\/p>\n<p>Aimeriez-vous les rejoindre pour \u00e9tudier les myst\u00e8res de la foudre?<\/p>\n<p><b>Fait int\u00e9ressant :<\/b> L'air, \u00e0 haute altitude dans l'atmosph\u00e8re terrestre, est plus rare, ce qui ralentit la foudre, permettant ainsi aux astronautes et aux appareils \u00e0 bord de la Station spatiale internationale de l'observer un peu plus facilement !<\/p>","protected":false},"excerpt":{"rendered":"<p>When was the last time you saw a lightning storm? They are very common on planet Earth, where storm clouds often trigger powerful electrical bursts in our atmosphere. There is [&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\/2018\/04\/thunderstorm_seen_from_space_station\/17912222-2-eng-GB\/Thunderstorm_seen_from_Space_Station.jpg","esa_banner_description":"Thunderstorm seen from Space Station","esa_banner_credit":"ESA\/NASA","esa_banner_licence":"ESA Standard Licence","esa_banner_detail_url":"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2018\/04\/Thunderstorm_seen_from_Space_Station","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-405","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\/405","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=405"}],"version-history":[{"count":4,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/posts\/405\/revisions"}],"predecessor-version":[{"id":4448,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/posts\/405\/revisions\/4448"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/media?parent=405"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/categories?post=405"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/tags?post=405"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/panel?post=405"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/language?post=405"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/age?post=405"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/duration?post=405"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/resource_type?post=405"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/audience?post=405"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/wf_post_folders?post=405"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}