{"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\/da\/mercury\/","title":{"rendered":"Kviks\u00f8lv"},"content":{"rendered":"
\n

Merkur er den planet, der ligger t\u00e6ttest p\u00e5 Solen. Den er ikke s\u00e6rlig nem at observere, da den p\u00e5 himlen altid befinder sig t\u00e6t p\u00e5 Solen. Selv n\u00e5r den st\u00e5r bedst, befinder den sig t\u00e6t p\u00e5 horisonten og er kun synlig i et par timer efter solnedgang eller f\u00f8r solopgang.<\/p>\n<\/div>\n

Planeten, der er opkaldt efter gudernes bevingede budbringer, kredser om Solen \u00e9n gang hver 88. dag. Den roterer dog meget langsomt om sin egen akse \u2013 \u00e9n gang hver 58,6. dag. Det svarer til pr\u00e6cis to tredjedele af dens oml\u00f8bstid.<\/p>\n

Merkur er en lille, stenet planet. Den er kun omtrent lige s\u00e5 bred som Atlanterhavet, og der ville kunne v\u00e6re plads til 18 Merkur-planeter inde i Jorden.<\/p>\n

Merkur ligner M\u00e5nen meget. Dens overflade er d\u00e6kket af nedslagskratere. Den har hverken atmosf\u00e6re eller vand. Middagstemperaturen ved \u00e6kvator kan stige til 450 \u00b0C, men n\u00e6tterne er ekstremt kolde, med temperaturer under -180 \u00b0C. Der kan v\u00e6re noget vandis i de dybe, m\u00f8rke kratere n\u00e6r polerne.<\/p>\n

Merkur har en overraskende h\u00f8j massefylde. Man mener, at planeten har en stor jernkerne, der udfylder det meste af Merkurs indre. Den har desuden et overraskende st\u00e6rkt magnetfelt.<\/p>\n

Indtil videre er mindre end halvdelen af overfladen blevet fotograferet p\u00e5 t\u00e6t hold af rumfart\u00f8jet Mariner 10. ESA og Japan planl\u00e6gger at sende to rumfart\u00f8jer i kredsl\u00f8b om Merkur i 2013. BepiColombo-missionen er opkaldt efter en ber\u00f8mt italiensk matematiker og videnskabsmand.<\/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\/da\/wp-json\/wp\/v2\/posts\/963","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/comments?post=963"}],"version-history":[{"count":1,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/posts\/963\/revisions"}],"predecessor-version":[{"id":2106,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/posts\/963\/revisions\/2106"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/media?parent=963"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/categories?post=963"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/tags?post=963"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/panel?post=963"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/language?post=963"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/age?post=963"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/duration?post=963"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/resource_type?post=963"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/audience?post=963"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/wf_post_folders?post=963"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}