{"id":783,"date":"2011-01-25T15:27:00","date_gmt":"2011-01-25T14:27:00","guid":{"rendered":"https:\/\/kids.esa.int\/moons\/"},"modified":"2026-10-08T00:32:12","modified_gmt":"2026-10-07T22:32:12","slug":"moons","status":"publish","type":"post","link":"https:\/\/kids.esa.int\/ro\/moons\/","title":{"rendered":"Luni"},"content":{"rendered":"
\n

Lunile sunt obiecte naturale care orbiteaz\u0103 \u00een jurul planetelor. Oamenii de \u0219tiin\u021b\u0103 le numesc de obicei sateli\u021bi planetari (sateli\u021bii crea\u021bi de om sunt uneori numi\u021bi luni artificiale). \u00cen Sistemul nostru Solar exist\u0103 aproximativ 170 de luni. Majoritatea se afl\u0103 pe orbita gigantilor gazo\u0219i Jupiter \u0219i Saturn. Planetele mici au, de obicei, pu\u021bine luni: Marte are dou\u0103, P\u0103m\u00e2ntul are una, \u00een timp ce Venus \u0219i Mercur nu au niciuna.<\/p>\n<\/div>\n

Luna P\u0103m\u00e2ntului este neobi\u0219nuit de mare \u00een compara\u021bie cu planeta. Majoritatea lunilor par minuscule \u00een compara\u021bie cu planeta din apropiere. Cu toate acestea, unele dintre lunile lui Jupiter \u0219i Saturn sunt mult mai mari dec\u00e2t Luna noastr\u0103. Ganymede \u0219i Titan sunt mai mari dec\u00e2t planeta Mercur.<\/p>\n

Datorit\u0103 dimensiunilor reduse, aproape toate lunile sunt incapabile s\u0103-\u0219i p\u0103streze atmosfera. Gravita\u021bia lor slab\u0103 permite gazelor s\u0103 se disipeze \u00een spa\u021biu. Excep\u021bia este Titan, cea mai mare lun\u0103 din sistemul lui Saturn. Titan are o atmosfer\u0103 mai groas\u0103 \u0219i mai dens\u0103 dec\u00e2t cea a P\u0103m\u00e2ntului. Azotul este gazul principal \u00een ambele atmosfere, dar pe Titan nu exist\u0103 oxigen \u0219i nici via\u021b\u0103. Suprafa\u021ba sa este ascuns\u0103 de o cea\u021b\u0103 portocalie. Unii oameni de \u0219tiin\u021b\u0103 consider\u0103 c\u0103 Titan este un P\u0103m\u00e2nt primitiv aflat \u00eentr-o stare de \u00eenghe\u021b profund.<\/p>\n

Se consider\u0103 c\u0103 unii sateli\u021bi, inclusiv Luna noastr\u0103, s-au format \u00een urma unor coliziuni masive, la \u00eenceputul istoriei Sistemului Solar. Luna s-a format din norul de resturi care a r\u0103mas pe orbita P\u0103m\u00e2ntului. Al\u021bii s-ar fi putut forma dintr-un nor de gaz \u0219i praf care \u00eenconjura planetele gigantice \u00een momentul \u00een care acestea atr\u0103geau materie. Majoritatea lunilor mai mici sunt comete sau asteroizi care au fost captura\u021bi atunci c\u00e2nd au trecut prea aproape de o planet\u0103 mare.<\/p>","protected":false},"excerpt":{"rendered":"

Moons are natural objects that orbit planets. Scientists usually refer to them as planetary satellites (human-made satellites are sometimes called artificial moons). There are about 170 moons in our Solar […]<\/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\/2008\/04\/five_saturn_moons2\/17883435-2-eng-GB\/Five_Saturn_moons.jpg","esa_banner_description":"","esa_banner_credit":"NASA \/ JPL","esa_banner_licence":"ESA Standard Licence","esa_banner_detail_url":"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2008\/04\/Five_Saturn_moons2","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-783","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\/ro\/wp-json\/wp\/v2\/posts\/783","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/kids.esa.int\/ro\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/kids.esa.int\/ro\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/ro\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/ro\/wp-json\/wp\/v2\/comments?post=783"}],"version-history":[{"count":1,"href":"https:\/\/kids.esa.int\/ro\/wp-json\/wp\/v2\/posts\/783\/revisions"}],"predecessor-version":[{"id":1926,"href":"https:\/\/kids.esa.int\/ro\/wp-json\/wp\/v2\/posts\/783\/revisions\/1926"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/ro\/wp-json\/wp\/v2\/media?parent=783"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/ro\/wp-json\/wp\/v2\/categories?post=783"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/ro\/wp-json\/wp\/v2\/tags?post=783"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/ro\/wp-json\/wp\/v2\/panel?post=783"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/ro\/wp-json\/wp\/v2\/language?post=783"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/ro\/wp-json\/wp\/v2\/age?post=783"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/ro\/wp-json\/wp\/v2\/duration?post=783"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/ro\/wp-json\/wp\/v2\/resource_type?post=783"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/ro\/wp-json\/wp\/v2\/audience?post=783"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/ro\/wp-json\/wp\/v2\/wf_post_folders?post=783"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}