{"id":906,"date":"2004-11-19T09:13:00","date_gmt":"2004-11-19T08:13:00","guid":{"rendered":"https:\/\/kids.esa.int\/gravity_and_weightlessness\/"},"modified":"2026-10-08T00:33:36","modified_gmt":"2026-10-07T22:33:36","slug":"gravity_and_weightlessness","status":"publish","type":"post","link":"https:\/\/kids.esa.int\/da\/gravity_and_weightlessness\/","title":{"rendered":"Tyngdekraft og v\u00e6gtl\u00f8shed"},"content":{"rendered":"<div class=\"lede\">\n<p>Vores hverdag best\u00e5r af aktiviteter som at sidde, g\u00e5, samle ting op fra gulvet og ligge i sengen. Ingen af disse aktiviteter er mulige i kredsl\u00f8b.<\/p>\n<\/div>\n<p>N\u00e5r et rumfart\u00f8j n\u00e5r sin bane, virker alt indeni det v\u00e6gtl\u00f8st. Alt (eller alle), der ikke er fastgjort, vil sv\u00e6ve.<\/p>\n<p>Astronauterne m\u00e6rker f\u00f8rst virkningen af v\u00e6gtl\u00f8sheden, n\u00e5r raketmotorerne slukkes. De begynder straks at sv\u00e6ve og holdes kun fast af sikkerhedsselerne. V\u00e6gtl\u00f8sheden f\u00e5r astronauterne til at virke superst\u00e6rke. De kan l\u00f8fte genstande, der ville v\u00e6re alt for tunge at flytte p\u00e5 Jorden. Men der er ogs\u00e5 nogle ulemper.<\/p>\n<p>Uden tyngdekraftens p\u00e5virkning begynder blod og andre kropsv\u00e6sker at str\u00f8mme op mod hovedet. Dette kan medf\u00f8re en f\u00f8lelse af trykken i hovedet og hovedpine. Da der ikke er nogen tyngdekraft at k\u00e6mpe imod, kan knogler og muskler blive svage. For at holde sig i form er de n\u00f8dt til at tr\u00e6ne flere timer hver dag. Det g\u00f8r, at de kommer sig hurtigere, n\u00e5r de vender tilbage til Jorden.<\/p>\n<p>I et rumfart\u00f8j eller p\u00e5 en rumstation findes der hverken op eller ned. Der er ingen forskel p\u00e5 gulv og loft. Det kan f\u00e5 astronauterne til at blive d\u00e5rlige, indtil de v\u00e6nner sig til disse us\u00e6dvanlige forhold.<\/p>","protected":false},"excerpt":{"rendered":"<p>Our everyday lives involve such activities as sitting, walking, picking up things from the ground and lying in bed. None of these activities are possible in orbit. Once a spacecraft [&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\/2003\/03\/parabolic_flight_picture-72\/17902825-2-eng-GB\/Parabolic_Flight_picture-7.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\/2003\/03\/Parabolic_Flight_picture-72","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":[10,13,63],"tags":[2],"panel":[],"language":[],"age":[],"duration":[],"resource_type":[],"audience":[],"wf_post_folders":[],"class_list":["post-906","post","type-post","status-publish","format-standard","hentry","category-learn","category-life-in-space","category-living-in-space","tag-background-article"],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/posts\/906","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=906"}],"version-history":[{"count":1,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/posts\/906\/revisions"}],"predecessor-version":[{"id":2049,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/posts\/906\/revisions\/2049"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/media?parent=906"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/categories?post=906"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/tags?post=906"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/panel?post=906"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/language?post=906"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/age?post=906"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/duration?post=906"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/resource_type?post=906"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/audience?post=906"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/wf_post_folders?post=906"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}