{"id":589,"date":"2004-11-15T13:56:00","date_gmt":"2004-11-15T12:56:00","guid":{"rendered":"https:\/\/kids.esa.int\/the_big_bang\/"},"modified":"2026-10-08T00:29:59","modified_gmt":"2026-10-07T22:29:59","slug":"the_big_bang","status":"publish","type":"post","link":"https:\/\/kids.esa.int\/es\/the_big_bang\/","title":{"rendered":"El Big Bang"},"content":{"rendered":"<div class=\"lede\">\n<p>La mayor\u00eda de los astr\u00f3nomos cree que el Universo comenz\u00f3 con un Big Bang, hace alrededor de 14 billones de a\u00f1os. En ese momento, todo el Universo se encontraba en el interior de una burbuja mil veces m\u00e1s peque\u00f1a que la aguja de un alfiler. Era m\u00e1s caliente y densa que cualquier cosa que nos podamos imaginar.<\/p>\n<\/div>\n<p>Luego explot\u00f3 de pronto. Hab\u00eda nacido el Universo que conocemos. El tiempo, el espacio y la materia comenzaron con el Big Bang. En una fracci\u00f3n de segundo, el Universo pas\u00f3 de ser m\u00e1s peque\u00f1o que un \u00e1tomo a ser m\u00e1s grande que una galaxia. Y continu\u00f3 creciendo a una velocidad impensable. Todav\u00eda hoy se encuentra en expansi\u00f3n.<\/p>\n<p>A medida que el Universo se expand\u00eda y enfriaba, la energ\u00eda se convert\u00eda en part\u00edculas de materia y antimateria. Estos dos tipos opuestos de part\u00edculas se destruyeron entre s\u00ed casi por completo. Pero algo de materia sobrevivi\u00f3. Cuando el Universo ten\u00eda un segundo de edad, se comenzaron a formar part\u00edculas m\u00e1s estables, llamadas protones y neutrones.<\/p>\n<p>En los tres minutos que siguieron, la temperatura cay\u00f3 por debajo de 1 bill\u00f3n de grados Celsius siendo entonces lo suficientemente templada como para que los protones y neutrones se unieran, formando n\u00facleos de hidr\u00f3geno y helio.<\/p>\n<p>Tras 300.000 a\u00f1os, la temperatura del Universo hab\u00eda descendido a cerca de 3.000 grados. Los n\u00facleos at\u00f3micos finalmente pudieron capturar electrones para formar \u00e1tomos. El Universo se llen\u00f3 de nubes de gas de hidr\u00f3geno y helio.<\/p>","protected":false},"excerpt":{"rendered":"<p>Most astronomers believe the Universe began in a Big Bang about 14 billion years ago. At that time, the entire Universe was inside a bubble that was thousands of times [&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\/2014\/06\/nearby_galaxy\/17883658-2-eng-GB\/Nearby_galaxy.jpg","esa_banner_description":"","esa_banner_credit":"ESA","esa_banner_licence":"ESA Standard Licence","esa_banner_detail_url":"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2014\/06\/Nearby_galaxy","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":[10,11,19],"tags":[2],"panel":[],"language":[],"age":[],"duration":[],"resource_type":[],"audience":[],"wf_post_folders":[],"class_list":["post-589","post","type-post","status-publish","format-standard","hentry","category-learn","category-our-universe","category-story-of-the-universe","tag-background-article"],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/kids.esa.int\/es\/wp-json\/wp\/v2\/posts\/589","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=589"}],"version-history":[{"count":1,"href":"https:\/\/kids.esa.int\/es\/wp-json\/wp\/v2\/posts\/589\/revisions"}],"predecessor-version":[{"id":1732,"href":"https:\/\/kids.esa.int\/es\/wp-json\/wp\/v2\/posts\/589\/revisions\/1732"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/es\/wp-json\/wp\/v2\/media?parent=589"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/es\/wp-json\/wp\/v2\/categories?post=589"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/es\/wp-json\/wp\/v2\/tags?post=589"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/es\/wp-json\/wp\/v2\/panel?post=589"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/es\/wp-json\/wp\/v2\/language?post=589"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/es\/wp-json\/wp\/v2\/age?post=589"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/es\/wp-json\/wp\/v2\/duration?post=589"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/es\/wp-json\/wp\/v2\/resource_type?post=589"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/es\/wp-json\/wp\/v2\/audience?post=589"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/es\/wp-json\/wp\/v2\/wf_post_folders?post=589"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}