{"id":1135,"date":"2004-11-15T16:04:00","date_gmt":"2004-11-15T15:04:00","guid":{"rendered":"https:\/\/kids.esa.int\/saturn_s_rings\/"},"modified":"2026-10-08T00:36:24","modified_gmt":"2026-10-07T22:36:24","slug":"saturn_s_rings","status":"publish","type":"post","link":"https:\/\/kids.esa.int\/fi\/saturn_s_rings\/","title":{"rendered":"Saturnuksen renkaat"},"content":{"rendered":"
\n

Saturnus tunnetaan \u2018renkaiden herrana\u2019, vaikka my\u00f6s kolmella muulla kaasuj\u00e4ttil\u00e4isplaneetalla \u2013 Jupiterilla, Uranuksella ja Neptunuksella \u2013 on renkaita. Saturnuksen j\u00e4rjestelm\u00e4 on kuitenkin erityisen merkitt\u00e4v\u00e4, sill\u00e4 sen renkaat ovat eritt\u00e4in kirkkaita ja hyvin suuria.<\/p>\n<\/div>\n

Ne saattavat olla hajonneen satelliitin tai komeetan j\u00e4\u00e4nteit\u00e4. Kun ne l\u00f6ydettiin 1600-luvulla, piirroksissa ne n\u00e4yttiv\u00e4t valtavilta \u2018Mikki Hiiren korvilta\u2019 planeetan kummallakin puolella. Teleskooppien kehittyess\u00e4 t\u00e4htitieteilij\u00e4t huomasivat, ett\u00e4 ne koostuvat miljoonista j\u00e4\u00e4- ja kivenpalasista. Renkaiden aukot ovat syntyneet l\u00e4heisten kuiden painovoiman vaikutuksesta.<\/p>\n

Kuin j\u00e4ttim\u00e4iset CD-levyt, n\u00e4iden litteiden renkaiden halkaisija on yli 275 000 km \u2013 tarpeeksi leve\u00e4 t\u00e4ytt\u00e4m\u00e4\u00e4n suurimman osan Maan ja Kuun v\u00e4lisest\u00e4 et\u00e4isyydest\u00e4 \u2013 mutta paksuus on alle 1 km. Kun Saturnus ja Maa liikkuvat yl\u00f6s ja alas kiertoradoillaan, n\u00e4kym\u00e4mme renkaista muuttuu. Vuonna 2003 renkaat olivat kirkkaimmillaan ja kauneimmillaan. Mutta 15 vuoden v\u00e4lein n\u00e4emme ne sivulta. Silloin niit\u00e4 ei n\u00e4e muutoin kuin suurimmilla kaukoputkilla. T\u00e4m\u00e4 on hyv\u00e4 hetki etsi\u00e4 pieni\u00e4 kuita renkaiden l\u00e4helt\u00e4.<\/p>","protected":false},"excerpt":{"rendered":"

Saturn is famous as the ‘lord of the rings’, even though the other three giant gas planets \u2013 Jupiter, Uranus and Neptune \u2013 also have rings. Saturn’s system takes pride […]<\/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\/12\/night_side_ringplane2\/17897569-2-eng-GB\/Night_Side_Ringplane.jpg","esa_banner_description":"Saturn's rings seen by Cassini-Huygens","esa_banner_credit":"NASA\/JPL\/Space Science Institute","esa_banner_licence":"ESA Standard Licence","esa_banner_detail_url":"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2004\/12\/Night_Side_Ringplane2","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-1135","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\/fi\/wp-json\/wp\/v2\/posts\/1135","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/comments?post=1135"}],"version-history":[{"count":1,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/posts\/1135\/revisions"}],"predecessor-version":[{"id":2278,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/posts\/1135\/revisions\/2278"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/media?parent=1135"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/categories?post=1135"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/tags?post=1135"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/panel?post=1135"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/language?post=1135"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/age?post=1135"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/duration?post=1135"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/resource_type?post=1135"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/audience?post=1135"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/wf_post_folders?post=1135"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}