{"id":821,"date":"2004-12-02T15:40:00","date_gmt":"2004-12-02T14:40:00","guid":{"rendered":"https:\/\/kids.esa.int\/beyond_earth\/"},"modified":"2026-10-08T00:32:39","modified_gmt":"2026-10-07T22:32:39","slug":"beyond_earth","status":"publish","type":"post","link":"https:\/\/kids.esa.int\/pt\/beyond_earth\/","title":{"rendered":"Para al\u00e9m da Terra"},"content":{"rendered":"<div class=\"lede\">\n<p>A maioria das naves espaciais \u00e9 colocada em \u00f3rbitas \u00e0 volta da Terra. Mas nem sempre este \u00e9 o local ideal para os sat\u00e9lites cient\u00edficos que exploram o universo distante.<\/p>\n<\/div>\n<p>O Telesc\u00f3pio Espacial Hubble segue uma \u00f3rbita circular a 600 km acima da superf\u00edcie terrestre, com uma inclina\u00e7\u00e3o de 28,5 graus em rela\u00e7\u00e3o ao equador. Esta \u00f3rbita terrestre facilita a repara\u00e7\u00e3o e a manuten\u00e7\u00e3o do observat\u00f3rio. No entanto, a Terra e a Lua bloqueiam grande parte do c\u00e9u.<\/p>\n<p>O sucessor do Hubble, o Telesc\u00f3pio Espacial James Webb, ir\u00e1 operar a uma dist\u00e2ncia muito maior. Ser\u00e1 colocado numa \u00f3rbita est\u00e1vel no chamado Ponto de Lagrange L2, a 1,5 milh\u00f5es de km de dist\u00e2ncia, no lado noturno da Terra.<\/p>\n<p>O L2 \u00e9 um dos cinco pontos de Lagrange da Terra. Nestes pontos, as for\u00e7as gravitacionais da Terra, da Lua e do Sol anulam-se mutuamente, pelo que \u00e9 f\u00e1cil manter um sat\u00e9lite na mesma posi\u00e7\u00e3o.<\/p>\n<p>Outros sat\u00e9lites, como o observat\u00f3rio SOHO da ESA, t\u00eam de manter o Sol sempre na sua linha de vis\u00e3o. Esta nave espacial est\u00e1 posicionada no ponto de Lagrange L1, a 1,5 milh\u00f5es de km da Terra, na dire\u00e7\u00e3o do Sol.<\/p>\n<p>Uma vez que as for\u00e7as gravitacionais da Terra e do Sol se equilibram no ponto L1, a SOHO pode permanecer entre ambos o tempo todo sem consumir muito combust\u00edvel.<\/p>","protected":false},"excerpt":{"rendered":"<p>Most spacecraft are placed in orbits around the Earth. But this is not always the optimal place for scientific satellites that explore the distant universe. The Hubble Space Telescope follows [&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\/changing_seasons_on_saturn2\/17877220-2-eng-GB\/Changing_seasons_on_Saturn.jpg","esa_banner_description":"Changing seasons on Saturn","esa_banner_credit":"NASA and The Hubble Heritage Team (STScI\/AURA)","esa_banner_licence":"ESA Standard Licence","esa_banner_detail_url":"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2003\/05\/Changing_seasons_on_Saturn2","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":[10,65,40],"tags":[2],"panel":[],"language":[],"age":[],"duration":[],"resource_type":[],"audience":[],"wf_post_folders":[],"class_list":["post-821","post","type-post","status-publish","format-standard","hentry","category-learn","category-mission-control","category-technology","tag-background-article"],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/kids.esa.int\/pt\/wp-json\/wp\/v2\/posts\/821","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=821"}],"version-history":[{"count":1,"href":"https:\/\/kids.esa.int\/pt\/wp-json\/wp\/v2\/posts\/821\/revisions"}],"predecessor-version":[{"id":1964,"href":"https:\/\/kids.esa.int\/pt\/wp-json\/wp\/v2\/posts\/821\/revisions\/1964"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/pt\/wp-json\/wp\/v2\/media?parent=821"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/pt\/wp-json\/wp\/v2\/categories?post=821"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/pt\/wp-json\/wp\/v2\/tags?post=821"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/pt\/wp-json\/wp\/v2\/panel?post=821"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/pt\/wp-json\/wp\/v2\/language?post=821"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/pt\/wp-json\/wp\/v2\/age?post=821"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/pt\/wp-json\/wp\/v2\/duration?post=821"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/pt\/wp-json\/wp\/v2\/resource_type?post=821"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/pt\/wp-json\/wp\/v2\/audience?post=821"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/pt\/wp-json\/wp\/v2\/wf_post_folders?post=821"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}