{"id":186,"date":"2021-12-02T12:48:59","date_gmt":"2021-12-02T11:48:59","guid":{"rendered":"https:\/\/kids.esa.int\/spot_the_asteroids3\/"},"modified":"2026-10-08T00:25:15","modified_gmt":"2026-10-07T22:25:15","slug":"spot_the_asteroids3","status":"publish","type":"post","link":"https:\/\/kids.esa.int\/da\/spot_the_asteroids3\/","title":{"rendered":"Find asteroiderne!"},"content":{"rendered":"<div class=\"lede\">\n<p>Har du nogensinde spekuleret p\u00e5, hvordan det er at v\u00e6re professionel astronom og gennemg\u00e5 data fra rumfart\u00f8jer i jagten p\u00e5 nye verdener? Nu har du chancen for at lede efter asteroider, ligesom astronomerne g\u00f8r!<\/p>\n<\/div>\n<p>Denne korte film er optaget af det japanske rumobservatorium AKARI. Den viser asteroiden Itokawa, der kredser t\u00e6t om Jorden \u2013 den lysende plet t\u00e6t p\u00e5 midten \u2013 set gennem AKARIs infrar\u00f8de kamera. Asteroidens relative n\u00e6rhed til Jorden afsl\u00f8res af dens hurtige bev\u00e6gelse over en periode p\u00e5 12 minutter. Dens lysstyrke h\u00e6nger ogs\u00e5 sammen med dens infrar\u00f8de (varme) udstr\u00e5ling. (Data som disse bruges til at give et bedre indtryk af st\u00f8rrelsen p\u00e5 asteroider, der en dag m\u00e5ske kan vise sig at v\u00e6re p\u00e5 kollisionskurs med Jorden.)<\/p>\n<p>Itokawa er ikke den eneste rumsten i denne film. Der er ogs\u00e5 to langt svagere asteroider, der langsomt bev\u00e6ger sig hen over himlen. Den ene kredser i samme retning som Itokawa. Har du t\u00e5lmodigheden og evnen til at finde dem? Bem\u00e6rk, at stjernerne ser ud til at blinke i videoen. Billederne i denne film er ubehandlede, af den slags, som astronomer selv bruger til forskning. Man kan tydeligt se mange ridser og striber for\u00e5rsaget af kosmiske str\u00e5ler og andre effekter.<\/p>\n<p>Da filmen blev optaget den 26. juli 2021, befandt Itokawa sig i stjernebilledet Skorpionen. Asteroiden og Jorden var p\u00e5 det tidspunkt t\u00e6ttest p\u00e5 hinanden, med en afstand p\u00e5 ca. 42 millioner km. (Til sammenligning ligger Jorden 150 millioner km fra Solen.)<\/p>\n<p>Tjek dine svar<\/p>","protected":false},"excerpt":{"rendered":"<p>Have you ever wondered what it is like to be a professional astronomer, searching through spacecraft data in search of new worlds? Well, here\u2019s your chance to hunt for asteroids [&hellip;]<\/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\/08\/motion_of_itokawa\/17872114-2-eng-GB\/Motion_of_Itokawa.png","esa_banner_description":"Motion of Itokawa","esa_banner_credit":"JAXA","esa_banner_licence":"ESA Standard Licence","esa_banner_detail_url":"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2007\/08\/Motion_of_Itokawa","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":[46,10,11],"tags":[2],"panel":[],"language":[],"age":[],"duration":[],"resource_type":[],"audience":[],"wf_post_folders":[],"class_list":["post-186","post","type-post","status-publish","format-standard","hentry","category-comets-and-meteors","category-learn","category-our-universe","tag-background-article"],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/posts\/186","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=186"}],"version-history":[{"count":2,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/posts\/186\/revisions"}],"predecessor-version":[{"id":3942,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/posts\/186\/revisions\/3942"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/media?parent=186"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/categories?post=186"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/tags?post=186"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/panel?post=186"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/language?post=186"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/age?post=186"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/duration?post=186"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/resource_type?post=186"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/audience?post=186"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/wf_post_folders?post=186"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}