{"id":924,"date":"2006-01-20T13:14:00","date_gmt":"2006-01-20T12:14:00","guid":{"rendered":"https:\/\/kids.esa.int\/venus\/"},"modified":"2026-10-08T00:33:50","modified_gmt":"2026-10-07T22:33:50","slug":"venus","status":"publish","type":"post","link":"https:\/\/kids.esa.int\/da\/venus\/","title":{"rendered":"Venus"},"content":{"rendered":"
\n

Venus er den anden planet regnet fra Solen, s\u00e5 den befinder sig altid ret t\u00e6t p\u00e5 Solen p\u00e5 himlen. Den fremst\u00e5r som en str\u00e5lende \u201cstjerne\u201d om morgenen eller om aftenen \u2013 det lyseste objekt p\u00e5 nattehimlen bortset fra M\u00e5nen. Gennem et teleskop kan man se, at den gennemg\u00e5r forskellige faser, ligesom M\u00e5nen.<\/p>\n<\/div>\n

Venus skinner s\u00e5 st\u00e6rkt, fordi den er d\u00e6kket af skyer, der reflekterer en stor del af det indfaldende sollys. De gullige skyer best\u00e5r af svovl og svovlsyre.<\/p>\n

P\u00e5 nogle m\u00e5der er Venus Jordens tvilling. Den er omtrent lige s\u00e5 stor og best\u00e5r af de samme klippematerialer. Den kommer ogs\u00e5 t\u00e6ttere p\u00e5 os end nogen anden planet. Den er dog omgivet af en tyk atmosf\u00e6re af kuldioxid \u2013 den gas, vi ud\u00e5nder. Denne atmosf\u00e6re er s\u00e5 t\u00e6t, at det at g\u00e5 igennem den ville v\u00e6re som at vade gennem vand.<\/p>\n

Kuldioxiden holder det meste af solens varme tilbage. Skylagene fungerer ogs\u00e5 som et t\u00e6ppe. Resultatet er en \u201cl\u00f8bsk drivhuseffekt\u201d, der har f\u00e5et planetens temperatur til at stige til 465 \u00b0C \u2013 varmt nok til at smelte bly. Det betyder, at Venus er endnu varmere end Merkur.<\/p>\n

Uden s\u00e6rlig beskyttelse ville en bes\u00f8gende p\u00e5 Venus d\u00f8 \u00f8jeblikkeligt \u2013 knust af det enorme lufttryk, kvalt af atmosf\u00e6ren, br\u00e6ndt til aske af den br\u00e6ndende hede og opl\u00f8st af syren.<\/p>\n

Venus\u2019 overflade er blevet kortlagt ved hj\u00e6lp af radar. Kortene viser tusindvis af vulkaner og nedslagskratere. Der findes to st\u00f8rre h\u00f8jlandsomr\u00e5der med en bjergk\u00e6de, der er h\u00f8jere end Mount Everest.<\/p>\n

Snesevis af rumfart\u00f8jer har bes\u00f8gt Venus, men der er stadig mange ubesvarede sp\u00f8rgsm\u00e5l. ESA\u2019s Venus Express har kredset i en n\u00e6sten pol\u00e6r bane omkring planeten, siden den ankom i april 2006. De fleste af dens instrumenter har unders\u00f8gt den t\u00e6tte atmosf\u00e6re og de hurtigt bev\u00e6gende skyer eller unders\u00f8gt, hvordan Solen p\u00e5virker planeten. Imidlertid har dens infrar\u00f8de sensor ogs\u00e5 v\u00e6ret i stand til at kortl\u00e6gge en del af overfladen og vise, at der muligvis findes aktive vulkaner p\u00e5 Jordens nabo.<\/p>","protected":false},"excerpt":{"rendered":"

Venus is the second planet from the Sun, so it is always fairly close to the Sun in the sky. It appears as a brilliant morning or evening \u201cstar\u201d \u2013 […]<\/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\/2002\/01\/venus_in_ultraviolet_light2\/17863345-3-eng-GB\/Venus_in_ultraviolet_light.jpg","esa_banner_description":"Venus in ultraviolet light","esa_banner_credit":"L. Esposito (University of Colorado, Boulder), and NASA\/ESA","esa_banner_licence":"ESA Standard Licence","esa_banner_detail_url":"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2002\/01\/Venus_in_ultraviolet_light2","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-924","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\/924","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=924"}],"version-history":[{"count":1,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/posts\/924\/revisions"}],"predecessor-version":[{"id":2067,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/posts\/924\/revisions\/2067"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/media?parent=924"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/categories?post=924"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/tags?post=924"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/panel?post=924"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/language?post=924"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/age?post=924"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/duration?post=924"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/resource_type?post=924"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/audience?post=924"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/wf_post_folders?post=924"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}