{"id":1130,"date":"2004-11-15T15:52:00","date_gmt":"2004-11-15T14:52:00","guid":{"rendered":"https:\/\/kids.esa.int\/threats_from_space\/"},"modified":"2026-10-08T00:36:20","modified_gmt":"2026-10-07T22:36:20","slug":"threats_from_space","status":"publish","type":"post","link":"https:\/\/kids.esa.int\/es\/threats_from_space\/","title":{"rendered":"Amenazas procedentes del espacio"},"content":{"rendered":"<div class=\"lede\">\n<p>La Tierra es el mayor de los cuatro planetas rocosos de nuestro Sistema Solar. Es muy pesado para su tama\u00f1o. En su centro hay un n\u00facleo grande y rico en hierro, donde la temperatura alcanza los 6.000 grados Celsius, tan caliente como la superficie del Sol.<\/p>\n<\/div>\n<p>El n\u00facleo externo l\u00edquido gira a medida que el planeta gira sobre su eje, actuando como el dinamo de una bicicleta. Este dinamo hace que la Tierra se comporte como un potente im\u00e1n.<\/p>\n<p>El campo magn\u00e9tico de la Tierra, que forma una burbuja invisible alrededor del planeta, act\u00faa como un escudo. Esto protege al planeta de la mayor\u00eda de las part\u00edculas a gran velocidad que las tormentas solares lanzan al espacio. A veces, las part\u00edculas atraviesan la barrera cerca de los polos magn\u00e9ticos. Esto da lugar a las auroras terrestres, conocidas com\u00fanmente como auroras boreales y australes.<\/p>\n<p>La superficie de la Tierra tambi\u00e9n est\u00e1 protegida por una densa atm\u00f3sfera. Esta bloquea la mayor parte de la radiaci\u00f3n nociva procedente del espacio. Adem\u00e1s, hace que los objetos peque\u00f1os que se acercan se quemen al entrar en la atm\u00f3sfera, formando estrellas fugaces. Solo los meteoritos y cometas de mayor tama\u00f1o llegan a la superficie y explotan, dejando grandes cr\u00e1teres.<\/p>\n<p>A diferencia de la Luna y otros planetas rocosos, hoy en d\u00eda hay pocos cr\u00e1teres de impacto en la Tierra. La mayor\u00eda de ellos se han desgastado o se han rellenado por la acci\u00f3n del agua corriente, el viento y el hielo.<\/p>","protected":false},"excerpt":{"rendered":"<p>Earth is the largest of the four rocky planets in our Solar System. It is very heavy for its size. At its centre is a large, iron-rich core, where the [&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\/2004\/05\/meteor_crater_in_arizona3\/17895645-2-eng-GB\/Meteor_Crater_in_Arizona.jpg","esa_banner_description":"Meteor Crater in Arizona","esa_banner_credit":"David Roddy, USGS","esa_banner_licence":"No ESA licences available","esa_banner_detail_url":"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2004\/05\/Meteor_Crater_in_Arizona3","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":[10,11,12],"tags":[2],"panel":[],"language":[],"age":[],"duration":[],"resource_type":[],"audience":[],"wf_post_folders":[],"class_list":["post-1130","post","type-post","status-publish","format-standard","hentry","category-learn","category-our-universe","category-planets-and-moons","tag-background-article"],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/kids.esa.int\/es\/wp-json\/wp\/v2\/posts\/1130","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/kids.esa.int\/es\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/kids.esa.int\/es\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/es\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/es\/wp-json\/wp\/v2\/comments?post=1130"}],"version-history":[{"count":1,"href":"https:\/\/kids.esa.int\/es\/wp-json\/wp\/v2\/posts\/1130\/revisions"}],"predecessor-version":[{"id":2273,"href":"https:\/\/kids.esa.int\/es\/wp-json\/wp\/v2\/posts\/1130\/revisions\/2273"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/es\/wp-json\/wp\/v2\/media?parent=1130"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/es\/wp-json\/wp\/v2\/categories?post=1130"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/es\/wp-json\/wp\/v2\/tags?post=1130"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/es\/wp-json\/wp\/v2\/panel?post=1130"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/es\/wp-json\/wp\/v2\/language?post=1130"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/es\/wp-json\/wp\/v2\/age?post=1130"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/es\/wp-json\/wp\/v2\/duration?post=1130"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/es\/wp-json\/wp\/v2\/resource_type?post=1130"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/es\/wp-json\/wp\/v2\/audience?post=1130"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/es\/wp-json\/wp\/v2\/wf_post_folders?post=1130"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}