{"id":1101,"date":"2005-12-09T13:07:00","date_gmt":"2005-12-09T12:07:00","guid":{"rendered":"https:\/\/kids.esa.int\/moons_and_rings\/"},"modified":"2026-10-08T00:36:01","modified_gmt":"2026-10-07T22:36:01","slug":"moons_and_rings","status":"publish","type":"post","link":"https:\/\/kids.esa.int\/sv\/moons_and_rings\/","title":{"rendered":"M\u00e5nar och ringar"},"content":{"rendered":"
\n

Alla planeter kretsar kring Solen moturs \u2013 sett uppifr\u00e5n jordens nordpol. Deras \u00e5r \u2013 den tid det tar f\u00f6r dem att fullborda ett varv \u2013 varierar beroende p\u00e5 deras avst\u00e5nd fr\u00e5n Solen. Ett \u00e5r p\u00e5 Merkurius varar bara 88 jorddagar, s\u00e5 n\u00e5gon som \u00e4r f\u00f6dd d\u00e4r skulle ha fyra g\u00e5nger s\u00e5 m\u00e5nga f\u00f6delsedagar som vi har h\u00e4r p\u00e5 jorden. D\u00e4remot motsvarar ett \u00e5r p\u00e5 Pluto 248 av v\u00e5ra \u00e5r. N\u00e5gon som \u00e4r f\u00f6dd p\u00e5 Pluto skulle aldrig fira n\u00e5gon f\u00f6delsedag!<\/p>\n<\/div>\n

Venus och Merkurius har inga naturliga m\u00e5nar, men de \u00f6vriga sju planeterna har alla m\u00e5nar som kretsar kring dem. Det totala antalet som hittills har registrerats \u00e4r 138. De flesta m\u00e5nar \u00e4r mycket sm\u00e5 och sv\u00e5ra att se, \u00e4ven med stora teleskop. F\u00f6r n\u00e4rvarande \u00e4r Jupiter rekordh\u00e5llare med 63 k\u00e4nda m\u00e5nar. Bland dessa finns fyra m\u00e5nar som \u00e4r lika stora som planeter \u2013 Ganymedes (solsystemets st\u00f6rsta m\u00e5ne), Callisto, Europa och Io.<\/p>\n

De andra gasj\u00e4ttarnas starka gravitation har ocks\u00e5 lockat till sig ett stort antal m\u00e5nar: Saturnus har 31, Uranus 27 och Neptunus 13. B\u00e5de Jorden och Pluto har varsin stor m\u00e5ne som kretsar kring dem.<\/p>\n

De fyra st\u00f6rsta planeterna \u2013 Jupiter, Saturnus, Uranus och Neptunus \u2013 har ocks\u00e5 ringar. De best\u00e5r av is- och stenbitar vars storlek varierar fr\u00e5n berg till cigarettr\u00f6k. Ringarna kan vara rester av en m\u00e5ne som g\u00e5tt s\u00f6nder, eller bitar som har flisats av fr\u00e5n n\u00e4rliggande m\u00e5nar.<\/p>","protected":false},"excerpt":{"rendered":"

All of the planets travel around the Sun in a counter-clockwise direction \u2013 as seen from above Earth\u2019s north pole. Their year – the time they take to complete one […]<\/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\/2005\/04\/jupiter_s_moon_europa2\/17905460-2-eng-GB\/Jupiter_s_moon_Europa.jpg","esa_banner_description":"Jupiter's moon, Europa","esa_banner_credit":"NASA\/DLR","esa_banner_licence":"ESA Standard Licence","esa_banner_detail_url":"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2005\/04\/Jupiter_s_moon_Europa2","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-1101","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\/sv\/wp-json\/wp\/v2\/posts\/1101","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/comments?post=1101"}],"version-history":[{"count":1,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/posts\/1101\/revisions"}],"predecessor-version":[{"id":2244,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/posts\/1101\/revisions\/2244"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/media?parent=1101"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/categories?post=1101"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/tags?post=1101"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/panel?post=1101"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/language?post=1101"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/age?post=1101"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/duration?post=1101"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/resource_type?post=1101"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/audience?post=1101"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/wf_post_folders?post=1101"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}