{"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\/sv\/getting_to_know_rosetta_s_comet\/","title":{"rendered":"Att l\u00e4ra k\u00e4nna Rosettas komet"},"content":{"rendered":"
\n

Det har g\u00e5tt hundratals \u00e5r sedan Christofer Columbus seglade jorden runt och uppt\u00e4ckte nya v\u00e4rldar \u2013 men l\u00e5t ingen f\u00e5 dig att tro att uppt\u00e4cktsresornas tid \u00e4r \u00f6ver. Universum \u00e4r o\u00e4ndligt stort och fullt av mysterier som v\u00e4ntar p\u00e5 att uppt\u00e4ckas, till exempel kometen 67P\/Churyumov-Gerasimenko, som just nu utforskas av rymdsonden Rosetta.<\/p>\n<\/div>\n

Sedan Rosetta anl\u00e4nde till kometen i augusti f\u00f6rra \u00e5ret har den unders\u00f6kt \u00f6ver tv\u00e5 tredjedelar av kometens yta, och den har visat sig vara mer intressant \u00e4n v\u00e4ntat. Landskapet \u00e4r en sp\u00e4nnande blandning, d\u00e4r vissa omr\u00e5den \u00e4r t\u00e4ckta av tjockt damm och andra pr\u00e4glas av klippiga branter och kanjoner. I andra omr\u00e5den finns enorma diken, gropar och stenblock eller sl\u00e4ta \u00f6knar.<\/p>\n

M\u00e5nga av de branta klippv\u00e4ggarna p\u00e5 Rosetta \u00e4r t\u00e4ckta av sprickor som ser farliga ut. Den st\u00f6rsta sprickan \u00e4r 500 meter l\u00e5ng \u2013 det motsvarar ungef\u00e4r fem fotbollsplaner!<\/p>\n

En annan sp\u00e4nnande f\u00f6reteelse \u00e4r de str\u00e5lar som har observerats stiga upp ur groparna som \u00e4r utspridda \u00f6ver kometens yta. Gasen som str\u00f6mmar ut fr\u00e5n dessa str\u00e5lar fungerar ungef\u00e4r som vinden p\u00e5 jorden och f\u00f6rflyttar damm \u00f6ver ytan. Detta skapar ibland v\u00e5gm\u00f6nster \u00f6ver ytan, liknande dem man ibland ser p\u00e5 stranden n\u00e4r tidvattnet drar sig tillbaka.<\/p>\n

Under de f\u00e5 m\u00e5nader som Rosetta har f\u00e4rdats vid sidan av kometen har vi redan l\u00e4rt oss s\u00e5 mycket. Allteftersom Rosetta samlar in allt mer data under det kommande \u00e5ret \u00e4r forskarna \u00f6vertygade om att de \u00e4ntligen kommer att kunna besvara n\u00e5gra viktiga fr\u00e5gor om hur v\u00e5rt solsystem bildades!<\/p>\n

Rolig fakta:<\/b> En dag p\u00e5 Rosettas komet \u00e4r h\u00e4lften s\u00e5 l\u00e5ng som en jorddag, bara 12 timmar. Men det tar sex g\u00e5nger s\u00e5 l\u00e5ng tid som f\u00f6r jorden att g\u00f6ra ett varv runt 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\/sv\/wp-json\/wp\/v2\/posts\/545","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=545"}],"version-history":[{"count":1,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/posts\/545\/revisions"}],"predecessor-version":[{"id":1688,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/posts\/545\/revisions\/1688"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/media?parent=545"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/categories?post=545"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/tags?post=545"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/panel?post=545"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/language?post=545"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/age?post=545"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/duration?post=545"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/resource_type?post=545"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/audience?post=545"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/wf_post_folders?post=545"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}