{"id":545,"date":"2015-01-28T07:45:00","date_gmt":"2015-01-28T06:45:00","guid":{"rendered":"https:\/\/kids.esa.int\/getting_to_know_rosetta_s_comet\/"},"modified":"2026-10-08T00:29:28","modified_gmt":"2026-10-07T22:29:28","slug":"getting_to_know_rosetta_s_comet","status":"publish","type":"post","link":"https:\/\/kids.esa.int\/da\/getting_to_know_rosetta_s_comet\/","title":{"rendered":"L\u00e6r Rosettas komet at kende"},"content":{"rendered":"
\n

Det er hundreder af \u00e5r siden, at Christopher Columbus sejlede rundt om Jorden og opdagede nye verdener \u2014 men lad ingen fort\u00e6lle dig, at opdagelsernes tidsalder er forbi. Universet er uendeligt stort og fuld af mysterier, der venter p\u00e5 at blive afsl\u00f8ret, s\u00e5som kometen 67P\/Churyumov-Gerasimenko, som i \u00f8jeblikket udforskes af rumfart\u00f8jet Rosetta.<\/p>\n<\/div>\n

Siden Rosetta ankom til kometen i august sidste \u00e5r, har den unders\u00f8gt over to tredjedele af kometens overflade, og det har vist sig at v\u00e6re mere interessant end forventet. Landskabet er en sp\u00e6ndende blanding, hvor nogle omr\u00e5der er d\u00e6kket af tykt st\u00f8v, mens andre er pr\u00e6get af klippeskr\u00e6nter og kl\u00f8fter. Andre omr\u00e5der byder p\u00e5 enorme fordybninger, huller og kampesten eller glatte \u00f8rkener.<\/p>\n

Mange af de stejle klippev\u00e6gge p\u00e5 Rosetta er d\u00e6kket af spr\u00e6kker, der ser farlige ud. Den st\u00f8rste spr\u00e6kke er 500 meter lang \u2013 det svarer til fem fodboldbaner!<\/p>\n

Et andet sp\u00e6ndende f\u00e6nomen er de str\u00e5ler, der er blevet observeret stige op fra fordybningerne spredt ud over kometens overflade. Gassen, der str\u00f8mmer ud af disse str\u00e5ler, virker lidt ligesom vinden p\u00e5 Jorden og bl\u00e6ser st\u00f8v rundt p\u00e5 overfladen. Dette skaber undertiden krusninger p\u00e5 overfladen, ligesom dem man nogle gange ser p\u00e5 stranden, n\u00e5r tidevandet tr\u00e6kker sig tilbage.<\/p>\n

I de f\u00e5 m\u00e5neder, Rosetta har rejst ved siden af kometen, har vi allerede l\u00e6rt utroligt meget. I takt med at Rosetta indsamler flere og flere data i l\u00f8bet af det kommende \u00e5r, er forskerne overbeviste om, at de endelig vil kunne besvare nogle vigtige sp\u00f8rgsm\u00e5l om, hvordan vores solsystem blev dannet!<\/p>\n

Sjovt faktum:<\/b> En dag p\u00e5 Rosettas komet varer halvt s\u00e5 l\u00e6nge som en jorddag, nemlig kun 12 timer. Men det tager seks gange l\u00e6ngere tid end p\u00e5 Jorden at kredse \u00e9n gang rundt om Solen.<\/p>","protected":false},"excerpt":{"rendered":"

It\u2019s been hundreds of years since Christopher Columbus sailed the Earth discovering new worlds \u2014 but don\u2019t let anyone tell you that the Age of Exploration is over. The Universe […]<\/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\/2015\/01\/comet_from_8_km2\/17887284-2-eng-GB\/Comet_from_8_km.jpg","esa_banner_description":"","esa_banner_credit":"ESA","esa_banner_licence":"ESA Standard Licence","esa_banner_detail_url":"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2015\/01\/Comet_from_8_km2","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":[26],"tags":[],"panel":[],"language":[],"age":[],"duration":[],"resource_type":[],"audience":[],"wf_post_folders":[],"class_list":["post-545","post","type-post","status-publish","format-standard","hentry","category-news"],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/posts\/545","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=545"}],"version-history":[{"count":1,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/posts\/545\/revisions"}],"predecessor-version":[{"id":1688,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/posts\/545\/revisions\/1688"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/media?parent=545"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/categories?post=545"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/tags?post=545"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/panel?post=545"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/language?post=545"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/age?post=545"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/duration?post=545"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/resource_type?post=545"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/audience?post=545"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/wf_post_folders?post=545"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}