{"id":920,"date":"2004-11-15T15:48:00","date_gmt":"2004-11-15T14:48:00","guid":{"rendered":"https:\/\/kids.esa.int\/titan\/"},"modified":"2026-10-08T00:33:47","modified_gmt":"2026-10-07T22:33:47","slug":"titan","status":"publish","type":"post","link":"https:\/\/kids.esa.int\/da\/titan\/","title":{"rendered":"Titan"},"content":{"rendered":"
\n

Titan er st\u00f8rre end planeten Merkur. Den er ogs\u00e5 den n\u00e6stst\u00f8rste m\u00e5ne i solsystemet og den eneste m\u00e5ne med en t\u00e6t atmosf\u00e6re. Ligesom p\u00e5 Jorden er den dominerende gas nitrogen, men Titan er meget koldere. Overfladen er dybt frossen ved minus 180 grader Celsius. Hvis det blev varmere, kunne Titan muligvis rumme liv.<\/p>\n<\/div>\n

Indtil NASA-ESA-rumfart\u00f8jet Cassini-Huygens ankom i 2004, vidste man kun meget lidt om Titan. Dets overflade er skjult bag et tykt lag af orange skyer.<\/p>\n

\"Titan's
Titans f\u00f8rste n\u00e6rbillede<\/figcaption><\/figure>\n

Den 14. januar 2005 foretog ESA\u2019s Huygens-sonde en historisk landing p\u00e5 Titan. Under sit 2\u00bd timers lange fald blev Huygens drevet mod \u00f8st af vinde i de \u00f8vre luftlag med en hastighed p\u00e5 over 100 km i timen. Vindene skiftede retning i en h\u00f8jde af 7 km og f\u00f8rte Huygens blidt mod vest i de sidste minutter af nedstigningen. Huygens fandt et isbelagt landskab pr\u00e6get af m\u00f8rke kanaler, der snoede sig mod en glat \u2018kystlinje\u2019.<\/p>\n

Titans atmosf\u00e6re best\u00e5r af ca. 5 procent metan. Sollysets indvirkning p\u00e5 metanet skaber den t\u00e6tte, orange t\u00e5ge. (P\u00e5 Jorden forbr\u00e6ndes metangas i kedler og komfurer.) Metanregnbyger fylder undertiden de t\u00f8rre kanaler og danner midlertidige floder, der eroderer overfladen og transporterer l\u00f8st materiale ud p\u00e5 de n\u00e6rliggende sletter.<\/p>\n

Under mere end 70 forbiflyvninger af Titan har Cassinis radar- og infrar\u00f8de instrumenter kortlagt store dele af overfladen. De har fundet mange m\u00e6rkelige tr\u00e6k, herunder k\u00e6mpe klitter af kulbrintesand, bjergk\u00e6der, metans\u00f8er og mulige isvulkaner. (Kulbrinter best\u00e5r af brint og kulstof. Eksempler herp\u00e5 p\u00e5 Jorden er kul, sod og tj\u00e6re.)<\/p>","protected":false},"excerpt":{"rendered":"

Titan is larger than the planet Mercury. It is also the second largest moon in the Solar System, and the only moon with a dense atmosphere. Just as on Earth, […]<\/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\/10\/huygens_probe_descending_through_titan_s_atmosphere4\/18244995-2-eng-GB\/Huygens_probe_descending_through_Titan_s_atmosphere.jpg","esa_banner_description":"Huygens probe descending through Titan's atmosphere","esa_banner_credit":"ESA","esa_banner_licence":"ESA Standard Licence","esa_banner_detail_url":"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2004\/10\/Huygens_probe_descending_through_Titan_s_atmosphere4","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-920","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\/920","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=920"}],"version-history":[{"count":4,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/posts\/920\/revisions"}],"predecessor-version":[{"id":4740,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/posts\/920\/revisions\/4740"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/media?parent=920"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/categories?post=920"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/tags?post=920"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/panel?post=920"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/language?post=920"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/age?post=920"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/duration?post=920"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/resource_type?post=920"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/audience?post=920"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/wf_post_folders?post=920"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}