{"id":1133,"date":"2004-11-16T08:14:00","date_gmt":"2004-11-16T07:14:00","guid":{"rendered":"https:\/\/kids.esa.int\/planets_and_moons_life_on_earth\/"},"modified":"2026-10-08T00:36:23","modified_gmt":"2026-10-07T22:36:23","slug":"planets_and_moons_life_on_earth","status":"publish","type":"post","link":"https:\/\/kids.esa.int\/es\/planets_and_moons_life_on_earth\/","title":{"rendered":"La vida en la Tierra"},"content":{"rendered":"<div class=\"lede\">\n<p>Los estudios de los f\u00f3siles encontrados en rocas antiguas nos indican que la vida probablemente surgi\u00f3 hace unos 4.000 millones de a\u00f1os, cuando la Tierra era muy joven. Nadie sabe c\u00f3mo surgi\u00f3 la vida en la Tierra. La mayor\u00eda de los cient\u00edficos creen que surgi\u00f3 en agua l\u00edquida. Pero, \u00bffue en charcos en la superficie, bajo tierra o en el fondo de los oc\u00e9anos, donde la actividad volc\u00e1nica forma fuentes termales?<\/p>\n<\/div>\n<p>Los experimentos demuestran que los componentes qu\u00edmicos b\u00e1sicos de la vida pueden formarse tanto en el espacio como en la Tierra. Muchos de ellos debieron de llegar a la Tierra con los meteoritos y cometas que cayeron sobre ella. De alguna manera, estas sustancias qu\u00edmicas \u2018org\u00e1nicas\u2019 simples se unieron para formar mol\u00e9culas m\u00e1s complejas. A continuaci\u00f3n, comenzaron a replicarse y a crecer.<\/p>\n<figure class=\"wp-block-image size-natural\" data-width=\"264\" data-credit=\"ESA\" data-detail-url=\"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2004\/09\/Dry_earth3\" 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\/2004\/09\/dry_earth3\/17868598-2-eng-GB\/Dry_earth.jpeg\" alt=\"Dry earth\"><figcaption>Tierra seca<\/figcaption><\/figure>\n<p>Lo que s\u00ed sabemos es que, una vez que se pone en marcha, la vida resulta incre\u00edblemente dura. Se han encontrado bacterias vivas en la Ant\u00e1rtida helada, en agua hirviendo y en el interior de rocas a una profundidad de hasta cinco kil\u00f3metros bajo tierra. Tambi\u00e9n sabemos que esos organismos pueden sobrevivir durante a\u00f1os en el hostil entorno del espacio.<\/p>\n<p>Una vez que las plantas se extendieron por todo el planeta, se liberaron grandes cantidades de ox\u00edgeno a la atm\u00f3sfera. La Tierra se convirti\u00f3 en el \u00fanico planeta de nuestro Sistema Solar con una atm\u00f3sfera rica en ox\u00edgeno. Al buscar ox\u00edgeno en otros mundos, quiz\u00e1 alg\u00fan d\u00eda encontremos pruebas de vida extraterrestre.<\/p>","protected":false},"excerpt":{"rendered":"<p>Studies of fossils in ancient rocks tell us that life probably began about 4 billion years ago, when the Earth was very young. No one knows how life began on [&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\/2003\/05\/dna_s_famous_double-helix_structure3\/17902899-2-eng-GB\/DNA_s_famous_double-helix_structure.jpg","esa_banner_description":"DNA's famous double-helix structure","esa_banner_credit":"ESA 2003. Illustration by Medialab.","esa_banner_licence":"ESA Standard Licence","esa_banner_detail_url":"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2003\/05\/DNA_s_famous_double-helix_structure3","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-1133","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\/1133","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=1133"}],"version-history":[{"count":5,"href":"https:\/\/kids.esa.int\/es\/wp-json\/wp\/v2\/posts\/1133\/revisions"}],"predecessor-version":[{"id":4865,"href":"https:\/\/kids.esa.int\/es\/wp-json\/wp\/v2\/posts\/1133\/revisions\/4865"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/es\/wp-json\/wp\/v2\/media?parent=1133"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/es\/wp-json\/wp\/v2\/categories?post=1133"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/es\/wp-json\/wp\/v2\/tags?post=1133"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/es\/wp-json\/wp\/v2\/panel?post=1133"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/es\/wp-json\/wp\/v2\/language?post=1133"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/es\/wp-json\/wp\/v2\/age?post=1133"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/es\/wp-json\/wp\/v2\/duration?post=1133"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/es\/wp-json\/wp\/v2\/resource_type?post=1133"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/es\/wp-json\/wp\/v2\/audience?post=1133"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/es\/wp-json\/wp\/v2\/wf_post_folders?post=1133"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}