{"id":963,"date":"2006-01-19T11:13:00","date_gmt":"2006-01-19T10:13:00","guid":{"rendered":"https:\/\/kids.esa.int\/mercury\/"},"modified":"2026-10-08T00:34:16","modified_gmt":"2026-10-07T22:34:16","slug":"mercury","status":"publish","type":"post","link":"https:\/\/kids.esa.int\/sv\/mercury\/","title":{"rendered":"Kvicksilver"},"content":{"rendered":"
\n

Merkurius \u00e4r den planet som ligger n\u00e4rmast Solen. Den \u00e4r inte s\u00e4rskilt l\u00e4tt att observera eftersom den alltid befinner sig n\u00e4ra Solen p\u00e5 himlen. \u00c4ven n\u00e4r den befinner sig i sitt b\u00e4sta l\u00e4ge ligger den n\u00e4ra horisonten och \u00e4r endast synlig under n\u00e5gra timmar efter solnedg\u00e5ngen eller f\u00f6re soluppg\u00e5ngen.<\/p>\n<\/div>\n

Planeten, som har f\u00e5tt sitt namn efter gudarnas bevingade budb\u00e4rare, kretsar runt Solen en g\u00e5ng var 88:e dag. Den roterar dock mycket l\u00e5ngsamt kring sin egen axel \u2013 en g\u00e5ng var 58,6:e dag. Detta motsvarar exakt tv\u00e5 tredjedelar av dess omloppsperiod.<\/p>\n

Merkurius \u00e4r en liten, stenig planet. Den \u00e4r bara ungef\u00e4r lika bred som Atlanten, och 18 Merkurius skulle f\u00e5 plats inuti Jorden.<\/p>\n

Merkurius liknar m\u00e5nen mycket. Dess yta \u00e4r t\u00e4ckt av nedslagskratrar. Den har varken atmosf\u00e4r eller vatten. Vid middagstid vid ekvatorn kan temperaturen stiga till 450 \u00b0C, men n\u00e4tterna \u00e4r extremt kalla, med temperaturer under -180 \u00b0C. Det kan finnas en del vattenis i de djupa, m\u00f6rka kratrarna n\u00e4ra polerna.<\/p>\n

Merkurius har en f\u00f6rv\u00e5nansv\u00e4rt h\u00f6g densitet. Man tror att planeten har en stor j\u00e4rnk\u00e4rna som upptar st\u00f6rre delen av Merkurius inre. Den har dessutom ett f\u00f6rv\u00e5nansv\u00e4rt starkt magnetf\u00e4lt.<\/p>\n

Hittills har mindre \u00e4n h\u00e4lften av ytan avbildats p\u00e5 n\u00e4ra h\u00e5ll av rymdfarkosten Mariner 10. ESA och Japan planerar att skicka tv\u00e5 rymdfarkoster i omloppsbana till Merkurius \u00e5r 2013. BepiColombo-uppdraget \u00e4r uppkallat efter en ber\u00f6md italiensk matematiker och vetenskapsman.<\/p>","protected":false},"excerpt":{"rendered":"

Mercury is the first planet from the Sun. It is not very easy to observe since it is always close to the Sun in the sky. Even when best placed, […]<\/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\/2006\/01\/mercury_s_southern_hemisphere2\/17904638-2-eng-GB\/Mercury_s_Southern_Hemisphere.jpg","esa_banner_description":"","esa_banner_credit":"JPL","esa_banner_licence":"ESA Standard Licence","esa_banner_detail_url":"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2006\/01\/Mercury_s_Southern_Hemisphere2","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-963","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\/963","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=963"}],"version-history":[{"count":1,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/posts\/963\/revisions"}],"predecessor-version":[{"id":2106,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/posts\/963\/revisions\/2106"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/media?parent=963"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/categories?post=963"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/tags?post=963"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/panel?post=963"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/language?post=963"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/age?post=963"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/duration?post=963"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/resource_type?post=963"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/audience?post=963"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/wf_post_folders?post=963"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}