{"id":85339,"date":"2026-04-24T14:37:18","date_gmt":"2026-04-24T14:37:18","guid":{"rendered":"https:\/\/www.europesays.com\/be-fr\/85339\/"},"modified":"2026-04-24T14:37:18","modified_gmt":"2026-04-24T14:37:18","slug":"la-mission-smile-sur-les-vents-solaires-decollera-le-19-mai-2","status":"publish","type":"post","link":"https:\/\/www.europesays.com\/be-fr\/85339\/","title":{"rendered":"La mission SMILE sur les vents solaires d\u00e9collera le 19 mai"},"content":{"rendered":"<p class=\"ap-StoryElement ap-StoryElement--mb ap-StoryText\">Le nouveau lancement est donc programm\u00e9 pour le 19 mai \u00e0 00h52 locales (03h52 GMT, 05h52 \u00e0 Paris).<\/p>\n<p class=\"ap-StoryElement ap-StoryElement--mb ap-StoryText\">Les vents solaires naissent des \u00e9jections de masse coronale (CME) qui se produisent \u00e0 la surface du Soleil. Ces \u00e9jections de plasma provoquent des flux de particules qui se propagent ensuite jusqu&rsquo;\u00e0 la Terre, \u00e0 une vitesse pouvant atteindre deux millions de kilom\u00e8tres par heure.<\/p>\n<p class=\"ap-StoryElement ap-StoryElement--mb ap-StoryText\">Au contact du champ magn\u00e9tique de notre plan\u00e8te, qui agit comme un bouclier, ces flux sont en grande partie d\u00e9tourn\u00e9s. Mais des particules charg\u00e9es p\u00e9n\u00e8trent tout de m\u00eame dans notre atmosph\u00e8re et interagissent alors avec les particules de l&rsquo;atmosph\u00e8re, pour engendrer le ph\u00e9nom\u00e8ne bien connu des aurores bor\u00e9ales.<\/p>\n<p class=\"ap-StoryElement ap-StoryElement--mb ap-StoryText\">Quand ces vents sont particuli\u00e8rement forts, ils peuvent entra\u00eener des temp\u00eates solaires et constituer un danger pour les satellites ou les autres \u00e9l\u00e9ments gravitant dans l&rsquo;espace, comme la Station spatiale internationale (ISS). Ils d\u00e9r\u00e8glent aussi nos syst\u00e8mes de t\u00e9l\u00e9communications.<\/p>\n<p class=\"ap-StoryElement ap-StoryElement--mb ap-StoryText\">Mieux d\u00e9finir les mod\u00e8les qui r\u00e9gissent cette m\u00e9t\u00e9o spatiale constitue donc un enjeu crucial de s\u00e9curit\u00e9 pour ces installations, ainsi qu&rsquo;un objectif scientifique d&rsquo;int\u00e9r\u00eat primordial.<\/p>\n","protected":false},"excerpt":{"rendered":"Le nouveau lancement est donc programm\u00e9 pour le 19 mai \u00e0 00h52 locales (03h52 GMT, 05h52 \u00e0 Paris).&hellip;\n","protected":false},"author":2,"featured_media":63571,"comment_status":"","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[70],"tags":[2681,12,13,18,17,1918,865,73,71,75,72,76,74],"class_list":{"0":"post-85339","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-sciences-et-technologies","8":"tag-astronomie","9":"tag-be","10":"tag-be-fr","11":"tag-belgique","12":"tag-belgium","13":"tag-espace","14":"tag-recherche","15":"tag-science","16":"tag-science-and-technology","17":"tag-sciences","18":"tag-sciences-et-technologies","19":"tag-technologies","20":"tag-technology"},"share_on_mastodon":{"url":"https:\/\/pubeurope.com\/@be_fr\/116460194749833783","error":""},"_links":{"self":[{"href":"https:\/\/www.europesays.com\/be-fr\/wp-json\/wp\/v2\/posts\/85339","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.europesays.com\/be-fr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.europesays.com\/be-fr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.europesays.com\/be-fr\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.europesays.com\/be-fr\/wp-json\/wp\/v2\/comments?post=85339"}],"version-history":[{"count":0,"href":"https:\/\/www.europesays.com\/be-fr\/wp-json\/wp\/v2\/posts\/85339\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.europesays.com\/be-fr\/wp-json\/wp\/v2\/media\/63571"}],"wp:attachment":[{"href":"https:\/\/www.europesays.com\/be-fr\/wp-json\/wp\/v2\/media?parent=85339"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.europesays.com\/be-fr\/wp-json\/wp\/v2\/categories?post=85339"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.europesays.com\/be-fr\/wp-json\/wp\/v2\/tags?post=85339"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}