{"id":728,"date":"2012-07-03T12:27:00","date_gmt":"2012-07-03T10:27:00","guid":{"rendered":"https:\/\/kids.esa.int\/titan_s_tides_point_to_a_hidden_ocean\/"},"modified":"2026-10-08T00:31:37","modified_gmt":"2026-10-07T22:31:37","slug":"titan_s_tides_point_to_a_hidden_ocean","status":"publish","type":"post","link":"https:\/\/kids.esa.int\/ro\/titan_s_tides_point_to_a_hidden_ocean\/","title":{"rendered":"Mareele de pe Titan sugereaz\u0103 existen\u021ba unui ocean ascuns"},"content":{"rendered":"
\n

P\u0103m\u00e2ntul este adesea cunoscut drept \u201eplaneta albastr\u0103\u201d, deoarece este singura lume din Sistemul nostru Solar care este acoperit\u0103 \u00een mare parte de ap\u0103. Cu toate acestea, se consider\u0103 c\u0103 o serie de sateli\u021bi, printre care \u0219i Titan, luna gigantic\u0103 a lui Saturn, ar avea oceane sub suprafa\u021ba lor. Indiciul privind existen\u021ba oceanului subteran al lui Titan provine din descoperirea unor maree de amploare.<\/p>\n<\/div>\n

Oricine viziteaz\u0103 litoralul este familiarizat cu mareele \u2013 cre\u0219terea \u0219i sc\u0103derea nivelului m\u0103rii de dou\u0103 ori pe zi. Mai pu\u021bin evidente sunt mareele care determin\u0103 crusta planetei noastre s\u0103 se ridice \u0219i s\u0103 coboare cu c\u00e2teva zeci de centimetri. Aceste maree sunt provocate de for\u021ba gravita\u021bional\u0103 combinat\u0103 a Lunii \u0219i a Soarelui asupra P\u0103m\u00e2ntului. Mareele de pe Titan se formeaz\u0103 \u00eentr-un mod similar. Totu\u0219i, de data aceasta, for\u021ba gravita\u021bional\u0103 a lui Saturn este cea care determin\u0103 luna s\u0103-\u0219i schimbe forma pe parcursul orbitei sale de 16 zile \u00een jurul planetei.<\/p>\n

Schimb\u0103rile de form\u0103 ale lui Titan au fost detectate prin urm\u0103rirea atent\u0103 a traiectoriei sondei spa\u021biale Cassini atunci c\u00e2nd aceasta trecea \u00een apropierea lunii. Diferen\u021bele \u00een modul \u00een care Titan a exercitat o for\u021b\u0103 de atrac\u021bie asupra sondei Cassini au ar\u0103tat c\u0103 for\u021ba gravita\u021bional\u0103 a lunii \u2013 \u0219i, prin urmare, forma acesteia \u2013 s-au modificat foarte u\u0219or. \u00cen punctul s\u0103u cel mai \u00eendep\u0103rtat, c\u00e2nd atrac\u021bia lui Saturn este mai slab\u0103, Titan este aproape sferic, ca o minge de fotbal. C\u00e2nd satelitul se afl\u0103 cel mai aproape de Saturn, acesta se alunge\u0219te, devenind mai degrab\u0103 ca o minge de rugby.<\/p>\n

Mareele rezultate determin\u0103 ridicarea \u0219i cobor\u00e2rea suprafe\u021bei lui Titan cu peste 10 metri. Totu\u0219i, aceast\u0103 varia\u021bie este mult mai mare dec\u00e2t ne-am fi a\u0219teptat dac\u0103 luna ar fi fost solid\u0103 \u00een \u00eentregime. Acest lucru indic\u0103 faptul c\u0103 are un ocean subteran, posibil cu o ad\u00e2ncime de 250 km, situat sub un \u00eenveli\u0219 de ghea\u021b\u0103 cu o grosime de aproximativ 50 km.<\/p>","protected":false},"excerpt":{"rendered":"

Earth is often known as the blue planet, because it is the only world in our Solar System which is largely covered by water. However, a number of satellites, including […]<\/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\/2012\/06\/titan_s_tides_raised_by_saturn2\/17912925-2-eng-GB\/Titan_s_tides_raised_by_Saturn.jpeg","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\/2012\/06\/Titan_s_tides_raised_by_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":[10,11,12],"tags":[],"panel":[],"language":[],"age":[],"duration":[],"resource_type":[],"audience":[],"wf_post_folders":[],"class_list":["post-728","post","type-post","status-publish","format-standard","hentry","category-learn","category-our-universe","category-planets-and-moons"],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/kids.esa.int\/ro\/wp-json\/wp\/v2\/posts\/728","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=728"}],"version-history":[{"count":1,"href":"https:\/\/kids.esa.int\/ro\/wp-json\/wp\/v2\/posts\/728\/revisions"}],"predecessor-version":[{"id":1871,"href":"https:\/\/kids.esa.int\/ro\/wp-json\/wp\/v2\/posts\/728\/revisions\/1871"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/ro\/wp-json\/wp\/v2\/media?parent=728"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/ro\/wp-json\/wp\/v2\/categories?post=728"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/ro\/wp-json\/wp\/v2\/tags?post=728"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/ro\/wp-json\/wp\/v2\/panel?post=728"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/ro\/wp-json\/wp\/v2\/language?post=728"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/ro\/wp-json\/wp\/v2\/age?post=728"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/ro\/wp-json\/wp\/v2\/duration?post=728"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/ro\/wp-json\/wp\/v2\/resource_type?post=728"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/ro\/wp-json\/wp\/v2\/audience?post=728"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/ro\/wp-json\/wp\/v2\/wf_post_folders?post=728"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}