{"id":1123,"date":"2004-12-03T10:13:00","date_gmt":"2004-12-03T09:13:00","guid":{"rendered":"https:\/\/kids.esa.int\/how_do_we_observe_the_earth\/"},"modified":"2026-10-08T00:36:15","modified_gmt":"2026-10-07T22:36:15","slug":"how_do_we_observe_the_earth","status":"publish","type":"post","link":"https:\/\/kids.esa.int\/es\/how_do_we_observe_the_earth\/","title":{"rendered":"\u00bfC\u00f3mo observamos la Tierra?"},"content":{"rendered":"
\n

Durante muchos siglos la \u00fanica posibilidad de obtener una buena visi\u00f3n de un \u00e1rea extensa consist\u00eda en subirse a un terreno m\u00e1s elevado. Posteriormente, la invenci\u00f3n de globos y aeronaves facilit\u00f3 en gran medida la observaci\u00f3n de la Tierra.<\/p>\n<\/div>\n

Durante la era espacial, los sat\u00e9lites se est\u00e1n utilizando cada vez m\u00e1s para examinar cada aspecto de nuestro planeta.<\/p>\n

Puesto que observan la Tierra desde una gran distancia, con frecuencia se les denomina sat\u00e9lites de 'teledetecci\u00f3n'.<\/p>\n

Las im\u00e1genes m\u00e1s detalladas de la superficie terrestre y la atm\u00f3sfera nos llegan desde los sat\u00e9lites ubicados en \u00f3rbitas bajas que los llevan sobre los polos Norte y Sur.<\/p>\n

A medida que la Tierra gira debajo de ellos, esos sat\u00e9lites pueden tomar im\u00e1genes de todo el planeta, franja por franja, en apenas algunos d\u00edas.<\/p>\n

\"Envisat,
Envisat, representaci\u00f3n art\u00edstica<\/figcaption><\/figure>\n

Los sat\u00e9lites en \u00f3rbita polar estudian la capa de hielo y nieve, el uso del suelo, la contaminaci\u00f3n atmosf\u00e9rica y del agua, y las condiciones meteorol\u00f3gicas locales. Los sat\u00e9lites en \u00f3rbita polar de la ESA son el Sat\u00e9lite Europeo de Teledetecci\u00f3n (ERS-2) y el sat\u00e9lite medioambiental Envisat.<\/p>\n

Otros sat\u00e9lites contemplan continuamente la misma regi\u00f3n de la Tierra al orbitarla a 36.000 km sobre el ecuador. Esto les permite obtener una visi\u00f3n m\u00e1s amplia, pero con la desventaja de que no pueden tomar im\u00e1genes tan detalladas de la superficie terrestre.<\/p>\n

Hasta ahora Europa ha lanzado ocho sat\u00e9lites meteorol\u00f3gicos, llamados Meteosat, en este tipo de \u00f3rbita 'geoestacionaria'.<\/p>","protected":false},"excerpt":{"rendered":"

For many centuries, the only way to obtain a good view of a large area was to climb to higher ground. Then the invention of balloons and aircraft made Earth […]<\/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\/07\/the_world_seen_by_envisat_s_meris2\/17870967-2-eng-GB\/The_world_seen_by_Envisat_s_MERIS.jpg","esa_banner_description":"The world seen by Envisat 's MERIS","esa_banner_credit":"ESA 2004","esa_banner_licence":"ESA Standard Licence","esa_banner_detail_url":"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2004\/07\/The_world_seen_by_Envisat_s_MERIS2","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":[42,10,59],"tags":[2],"panel":[],"language":[],"age":[],"duration":[],"resource_type":[],"audience":[],"wf_post_folders":[],"class_list":["post-1123","post","type-post","status-publish","format-standard","hentry","category-earth","category-learn","category-natural-disasters","tag-background-article"],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/kids.esa.int\/es\/wp-json\/wp\/v2\/posts\/1123","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=1123"}],"version-history":[{"count":4,"href":"https:\/\/kids.esa.int\/es\/wp-json\/wp\/v2\/posts\/1123\/revisions"}],"predecessor-version":[{"id":4859,"href":"https:\/\/kids.esa.int\/es\/wp-json\/wp\/v2\/posts\/1123\/revisions\/4859"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/es\/wp-json\/wp\/v2\/media?parent=1123"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/es\/wp-json\/wp\/v2\/categories?post=1123"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/es\/wp-json\/wp\/v2\/tags?post=1123"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/es\/wp-json\/wp\/v2\/panel?post=1123"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/es\/wp-json\/wp\/v2\/language?post=1123"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/es\/wp-json\/wp\/v2\/age?post=1123"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/es\/wp-json\/wp\/v2\/duration?post=1123"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/es\/wp-json\/wp\/v2\/resource_type?post=1123"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/es\/wp-json\/wp\/v2\/audience?post=1123"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/es\/wp-json\/wp\/v2\/wf_post_folders?post=1123"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}