{"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\/sv\/titan\/","title":{"rendered":"Titan"},"content":{"rendered":"
\n

Titan \u00e4r st\u00f6rre \u00e4n planeten Merkurius. Den \u00e4r ocks\u00e5 den n\u00e4st st\u00f6rsta m\u00e5nen i solsystemet och den enda m\u00e5nen med en t\u00e4t atmosf\u00e4r. Precis som p\u00e5 jorden best\u00e5r atmosf\u00e4ren huvudsakligen av kv\u00e4ve, men p\u00e5 Titan \u00e4r det mycket kallare. Ytan \u00e4r iskall, med en temperatur p\u00e5 minus 180 grader Celsius. Om det blev varmare skulle Titan kanske kunna hysa liv.<\/p>\n<\/div>\n

Fram till dess att NASA:s och ESA:s rymdsond Cassini-Huygens anl\u00e4nde \u00e5r 2004 visste man mycket lite om Titan. Dess yta \u00e4r dold under ett tjockt t\u00e4cke av orangea moln.<\/p>\n

\"Titan's
Titans f\u00f6rsta n\u00e4rbild<\/figcaption><\/figure>\n

Den 14 januari 2005 genomf\u00f6rde ESA:s sond Huygens en historisk landning p\u00e5 Titan. Under sin 2\u00bd timmar l\u00e5nga nedstigning drevs Huygens \u00f6sterut av vindar p\u00e5 h\u00f6g h\u00f6jd med hastigheter p\u00e5 \u00f6ver 100 km per timme. Vindarna bytte riktning p\u00e5 7 km h\u00f6jd och f\u00f6rde Huygens f\u00f6rsiktigt v\u00e4sterut under de sista minuterna av nedstigningen. Huygens fann ett isigt landskap pr\u00e4glat av m\u00f6rka kanaler som slingrade sig mot en j\u00e4mn \u2018strandlinje\u2019.<\/p>\n

Titans atmosf\u00e4r best\u00e5r till cirka 5 procent av metan. N\u00e4r solljuset verkar p\u00e5 metanet bildas ett tjockt orange dis. (P\u00e5 jorden anv\u00e4nds metangas i v\u00e4rmepannor och spisar.) Ibland fyller metanregn de torra kanalerna och bildar tillf\u00e4lliga floder som eroderar ytan och f\u00f6r med sig l\u00f6st material ut p\u00e5 n\u00e4rliggande sl\u00e4tter.<\/p>\n

Under mer \u00e4n 70 f\u00f6rbiflygningar av Titan har Cassinis radar- och infrar\u00f6da instrument kartlagt stora delar av ytan. De har uppt\u00e4ckt m\u00e5nga m\u00e4rkliga formationer, d\u00e4ribland enorma sanddyner av kolv\u00e4te, bergskedjor, metansj\u00f6ar och m\u00f6jliga isvulkaner. (Kolv\u00e4ten best\u00e5r av v\u00e4te och kol. Exempel p\u00e5 jorden \u00e4r kol, sot och tj\u00e4ra.)<\/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\/sv\/wp-json\/wp\/v2\/posts\/920","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=920"}],"version-history":[{"count":4,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/posts\/920\/revisions"}],"predecessor-version":[{"id":4740,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/posts\/920\/revisions\/4740"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/media?parent=920"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/categories?post=920"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/tags?post=920"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/panel?post=920"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/language?post=920"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/age?post=920"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/duration?post=920"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/resource_type?post=920"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/audience?post=920"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/wf_post_folders?post=920"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}