{"id":492,"date":"2016-05-30T07:29:00","date_gmt":"2016-05-30T05:29:00","guid":{"rendered":"https:\/\/kids.esa.int\/the_aurora\/"},"modified":"2026-10-08T00:28:49","modified_gmt":"2026-10-07T22:28:49","slug":"the_aurora","status":"publish","type":"post","link":"https:\/\/kids.esa.int\/pt\/the_aurora\/","title":{"rendered":"A aurora"},"content":{"rendered":"<div class=\"lede\">\n<p>J\u00e1 alguma vez viu a aurora? Uma bel\u00edssima cortina de luz ondulante no c\u00e9u noturno, \u00e9 um espet\u00e1culo impressionante e inesquec\u00edvel para quem tem a sorte de a testemunhar. Mas o que causa a aurora?<\/p>\n<\/div>\n<p>Tudo come\u00e7a com a nossa estrela mais pr\u00f3xima, o Sol. O Sol \u00e9 incrivelmente energ\u00e9tico e est\u00e1 constantemente a produzir aquilo a que chamamos vento solar \u2014 um fluxo de part\u00edculas min\u00fasculas. Estas s\u00e3o lan\u00e7adas para o espa\u00e7o e s\u00e3o desviadas pelo campo magn\u00e9tico que envolve o planeta Terra.<\/p>\n<p>Normalmente, a hist\u00f3ria termina aqui\u2026 mas, por vezes, ocorrem enormes erup\u00e7\u00f5es no Sol, chamadas \u00aberup\u00e7\u00f5es solares\u00bb, que tornam o vento solar ainda mais forte. Quando isso acontece, as part\u00edculas t\u00eam tanta energia que n\u00e3o se limitam a entrar no campo magn\u00e9tico da Terra \u2013 elas colidem com ele!<\/p>\n<p>As part\u00edculas do vento solar seguem ent\u00e3o o campo magn\u00e9tico da Terra at\u00e9 aos p\u00f3los norte e sul do nosso planeta. Por fim, as part\u00edculas colidem com os gases da nossa atmosfera. Toda essa energia \u00e9 ent\u00e3o libertada sob a forma de luz! As part\u00edculas do vento solar que colidem com o oxig\u00e9nio produzem uma fabulosa cor verde. O azoto cria belos tons de azul e roxo. \u00c9 isto que d\u00e1 origem \u00e0 aurora.<\/p>\n<p>Por mais bela que seja a aurora, outros efeitos secund\u00e1rios do vento solar podem causar problemas. As part\u00edculas de alta energia podem danificar sat\u00e9lites em \u00f3rbita \u00e0 volta do nosso planeta e amea\u00e7ar a seguran\u00e7a dos astronautas. Podem at\u00e9 causar cortes de energia na superf\u00edcie da Terra. A aurora n\u00e3o \u00e9 exclusiva da Terra. Outros mundos do nosso Sistema Solar, como Saturno e J\u00fapiter, tamb\u00e9m possuem campos magn\u00e9ticos. As part\u00edculas do vento solar podem colidir com eles, tal como acontece com a Terra! Gostarias de voar para outro planeta e ver a sua aurora?<\/p>\n<p><b>Curiosidade:<\/b> A aurora deve o seu nome \u00e0 deusa romana do amanhecer.<\/p>\n<nav class=\"related\" aria-label=\"Relacionado\">\n<h2 class=\"related__heading\">Relacionado<\/h2>\n<div class=\"grid related__grid\">\n<div class=\"grid-item\">\n<article class=\"card focuson agency\"><a class=\"card__link\" href=\"\/pt\/polarlys\/\"><\/p>\n<figure class=\"thumbnail\"><span class=\"dimmer\"><\/span><\/figure>\n<header class=\"entry\">\n<h3 class=\"heading\">dinamarqu\u00eas<\/h3>\n<\/header>\n<p><\/a><\/article>\n<\/div>\n<div class=\"grid-item\">\n<article class=\"card focuson agency\"><a class=\"card__link\" href=\"\/pt\/aurora_of_het_poollicht\/\"><\/p>\n<figure class=\"thumbnail\"><span class=\"dimmer\"><\/span><\/figure>\n<header class=\"entry\">\n<h3 class=\"heading\">holand\u00eas<\/h3>\n<\/header>\n<p><\/a><\/article>\n<\/div>\n<div class=\"grid-item\">\n<article class=\"card focuson agency\"><a class=\"card__link\" href=\"\/pt\/les_aurores\/\"><\/p>\n<figure class=\"thumbnail\"><span class=\"dimmer\"><\/span><\/figure>\n<header class=\"entry\">\n<h3 class=\"heading\">Franc\u00eas<\/h3>\n<\/header>\n<p><\/a><\/article>\n<\/div>\n<div class=\"grid-item\">\n<article class=\"card focuson agency\"><a class=\"card__link\" href=\"\/pt\/das_nordlicht\/\"><\/p>\n<figure class=\"thumbnail\"><span class=\"dimmer\"><\/span><\/figure>\n<header class=\"entry\">\n<h3 class=\"heading\">Alem\u00e3o<\/h3>\n<\/header>\n<p><\/a><\/article>\n<\/div>\n<div class=\"grid-item\">\n<article class=\"card focuson agency\"><a class=\"card__link\" href=\"\/pt\/l_aurora\/\"><\/p>\n<figure class=\"thumbnail\"><span class=\"dimmer\"><\/span><\/figure>\n<header class=\"entry\">\n<h3 class=\"heading\">Italiano<\/h3>\n<\/header>\n<p><\/a><\/article>\n<\/div>\n<div class=\"grid-item\">\n<article class=\"card focuson agency\"><a class=\"card__link\" href=\"\/pt\/polarlyset\/\"><\/p>\n<figure class=\"thumbnail\"><span class=\"dimmer\"><\/span><\/figure>\n<header class=\"entry\">\n<h3 class=\"heading\">noruegu\u00eas<\/h3>\n<\/header>\n<p><\/a><\/article>\n<\/div>\n<div class=\"grid-item\">\n<article class=\"card focuson agency\"><a class=\"card__link\" href=\"\/pt\/zorza_polarna\/\"><\/p>\n<figure class=\"thumbnail\"><span class=\"dimmer\"><\/span><\/figure>\n<header class=\"entry\">\n<h3 class=\"heading\">polaco<\/h3>\n<\/header>\n<p><\/a><\/article>\n<\/div>\n<div class=\"grid-item\">\n<article class=\"card focuson agency\"><a class=\"card__link\" href=\"\/pt\/la_aurora\/\"><\/p>\n<figure class=\"thumbnail\"><span class=\"dimmer\"><\/span><\/figure>\n<header class=\"entry\">\n<h3 class=\"heading\">Espanhol<\/h3>\n<\/header>\n<p><\/a><\/article>\n<\/div>\n<div class=\"grid-item\">\n<article class=\"card focuson agency\"><a class=\"card__link\" href=\"\/pt\/auroran_norrskenet\/\"><\/p>\n<figure class=\"thumbnail\"><span class=\"dimmer\"><\/span><\/figure>\n<header class=\"entry\">\n<h3 class=\"heading\">sueco<\/h3>\n<\/header>\n<p><\/a><\/article>\n<\/div>\n<\/div>\n<\/nav>","protected":false},"excerpt":{"rendered":"<p>Have you ever seen the aurora? A beautiful curtain of rippling light in the night sky, it is an awe-inspiring and unforgettable sight for those lucky enough to have witnessed [&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\/2012\/09\/aurora_borealis2\/17887210-2-eng-GB\/Aurora_borealis.jpg","esa_banner_description":"Aurora borealis","esa_banner_credit":"ESA","esa_banner_licence":"ESA Standard Licence","esa_banner_detail_url":"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2012\/09\/Aurora_borealis2","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":[10,11,35],"tags":[],"panel":[],"language":[],"age":[],"duration":[],"resource_type":[],"audience":[],"wf_post_folders":[],"class_list":["post-492","post","type-post","status-publish","format-standard","hentry","category-learn","category-our-universe","category-the-sun"],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/kids.esa.int\/pt\/wp-json\/wp\/v2\/posts\/492","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/kids.esa.int\/pt\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/kids.esa.int\/pt\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/pt\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/pt\/wp-json\/wp\/v2\/comments?post=492"}],"version-history":[{"count":1,"href":"https:\/\/kids.esa.int\/pt\/wp-json\/wp\/v2\/posts\/492\/revisions"}],"predecessor-version":[{"id":1635,"href":"https:\/\/kids.esa.int\/pt\/wp-json\/wp\/v2\/posts\/492\/revisions\/1635"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/pt\/wp-json\/wp\/v2\/media?parent=492"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/pt\/wp-json\/wp\/v2\/categories?post=492"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/pt\/wp-json\/wp\/v2\/tags?post=492"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/pt\/wp-json\/wp\/v2\/panel?post=492"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/pt\/wp-json\/wp\/v2\/language?post=492"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/pt\/wp-json\/wp\/v2\/age?post=492"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/pt\/wp-json\/wp\/v2\/duration?post=492"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/pt\/wp-json\/wp\/v2\/resource_type?post=492"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/pt\/wp-json\/wp\/v2\/audience?post=492"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/pt\/wp-json\/wp\/v2\/wf_post_folders?post=492"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}