{"id":867,"date":"2011-04-26T08:48:00","date_gmt":"2011-04-26T06:48:00","guid":{"rendered":"https:\/\/kids.esa.int\/esa_astronaut_to_launch_on_dark_matter_mission\/"},"modified":"2026-10-08T00:33:10","modified_gmt":"2026-10-07T22:33:10","slug":"esa_astronaut_to_launch_on_dark_matter_mission","status":"publish","type":"post","link":"https:\/\/kids.esa.int\/da\/esa_astronaut_to_launch_on_dark_matter_mission\/","title":{"rendered":"ESA-astronaut skal med p\u00e5 mission om m\u00f8rkt stof"},"content":{"rendered":"
\n

Se dig omkring. Det virker indlysende, at alt best\u00e5r af faste stoffer, v\u00e6sker og gasser. Men dine \u00f8jne bedrager dig. St\u00f8rstedelen af universet best\u00e5r ikke af almindelig stof. I stedet ser det ud til, at det i h\u00f8j grad best\u00e5r af mystisk m\u00f8rkt stof og endnu mere mystisk m\u00f8rk energi. For at l\u00e6re mere om dette usynlige univers er et kraftfuldt nyt instrument, kendt som Alpha Magnetic Spectrometer (AMS-02), ved at blive leveret til Den Internationale Rumstation (ISS).<\/p>\n<\/div>\n

AMS-02 vil blive transporteret til rumstationen i slutningen af april under rumf\u00e6rgen Endeavours sidste flyvning. Med om bord vil ogs\u00e5 v\u00e6re ESA-astronauten Roberto Vittori og fem kolleger. Roberto er den f\u00f8rste ESA-astronaut, der har fl\u00f8jet til rumstationen tre gange. Han vil ogs\u00e5 v\u00e6re den sidste europ\u00e6er \u2013 og den sidste ikke-amerikaner \u2013 der flyver med rumf\u00e6rgen.<\/p>\n

En af hans opgaver bliver at bruge Endeavours robotarm til at l\u00f8fte AMS-02-partikeldetektoren ud af lastrummet og fastg\u00f8re den til ISS. Instrumentet, der vejer syv ton, skal v\u00e6re i drift i mindst tre \u00e5r. Det skal m\u00e5le, hvad der sker, n\u00e5r h\u00f8jenergipartikler \u2013 ogs\u00e5 kaldet kosmiske str\u00e5ler \u2013 ankommer fra fjerne galakser. Eventuelle m\u00e6rkelige partikler, der opst\u00e5r ved disse kosmiske str\u00e5lers indvirkning, kan muligvis levere bevis for, at antistof eller m\u00f8rkt stof eksisterer.<\/p>\n

Man mener, at der blev skabt lige store m\u00e6ngder af stof og antistof under Big Bang, men antistoffet synes at v\u00e6re forsvundet fra det nuv\u00e6rende univers. M\u00f8rkt stof menes at v\u00e6re langt mere udbredt end almindeligt stof, men det er endnu ikke blevet p\u00e5vist direkte. Navnet \u2018DAMA\u2019, som Roberto Vittoris mission har f\u00e5et, afspejler denne s\u00f8gen efter m\u00f8rkt stof.<\/p>","protected":false},"excerpt":{"rendered":"

Look around. It seems obvious that everything is made of solids, liquids and gases. However, your eyes are being deceived. Most of the Universe is not made of ordinary matter. […]<\/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\/2007\/05\/the_ring_of_dark_matter2\/17893833-2-eng-GB\/The_ring_of_dark_matter.jpg","esa_banner_description":"","esa_banner_credit":"NASA, ESA, M. Jee and H. Ford (Johns Hopkins University)","esa_banner_licence":"ESA Standard Licence","esa_banner_detail_url":"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2007\/05\/The_ring_of_dark_matter2","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-867","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\/867","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=867"}],"version-history":[{"count":1,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/posts\/867\/revisions"}],"predecessor-version":[{"id":2010,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/posts\/867\/revisions\/2010"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/media?parent=867"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/categories?post=867"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/tags?post=867"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/panel?post=867"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/language?post=867"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/age?post=867"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/duration?post=867"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/resource_type?post=867"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/audience?post=867"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/wf_post_folders?post=867"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}