{"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\/sv\/gravity_and_weightlessness\/","title":{"rendered":"Tyngdkraft och tyngdl\u00f6shet"},"content":{"rendered":"
\n

V\u00e5r vardag best\u00e5r av aktiviteter som att sitta, g\u00e5, plocka upp saker fr\u00e5n marken och ligga i s\u00e4ngen. Ingen av dessa aktiviteter \u00e4r m\u00f6jlig i omloppsbana.<\/p>\n<\/div>\n

N\u00e4r ett rymdfarkost n\u00e5r omloppsbana verkar allt inuti den vara tyngdl\u00f6st. Allt (eller alla) som inte \u00e4r fastsp\u00e4nt kommer att sv\u00e4va.<\/p>\n

Astronauterna k\u00e4nner f\u00f6rst av tyngdl\u00f6sheten n\u00e4r raketmotorerna st\u00e4ngs av. De b\u00f6rjar genast sv\u00e4va och h\u00e5lls endast p\u00e5 plats av s\u00e4kerhetsb\u00e4ltena. Tyngdl\u00f6sheten g\u00f6r att astronauterna verkar ha \u00f6verm\u00e4nsklig styrka. De kan lyfta f\u00f6rem\u00e5l som skulle vara alldeles f\u00f6r tunga att flytta p\u00e5 jorden. Men det finns ocks\u00e5 vissa nackdelar.<\/p>\n

Utan tyngdkraften b\u00f6rjar blod och andra kroppsv\u00e4tskor att str\u00f6mma upp mot huvudet. Detta kan orsaka en k\u00e4nsla av tryck \u00f6ver br\u00f6stet och huvudv\u00e4rk. Utan tyngdkraften att k\u00e4mpa emot kan ben och muskler f\u00f6rsvagas. F\u00f6r att h\u00e5lla sig i form m\u00e5ste de tr\u00e4na flera timmar varje dag. P\u00e5 s\u00e5 s\u00e4tt kan de \u00e5terh\u00e4mta sig snabbare n\u00e4r de \u00e5terv\u00e4nder till jorden.<\/p>\n

I en rymdf\u00e4rja eller p\u00e5 en rymdstation finns det varken upp eller ner. Det finns ingen skillnad mellan golv och tak. Detta kan g\u00f6ra att astronauterna m\u00e5r illa tills de vant sig vid denna m\u00e4rkliga situation.<\/p>","protected":false},"excerpt":{"rendered":"

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 […]<\/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\/sv\/wp-json\/wp\/v2\/posts\/906","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=906"}],"version-history":[{"count":1,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/posts\/906\/revisions"}],"predecessor-version":[{"id":2049,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/posts\/906\/revisions\/2049"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/media?parent=906"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/categories?post=906"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/tags?post=906"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/panel?post=906"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/language?post=906"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/age?post=906"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/duration?post=906"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/resource_type?post=906"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/audience?post=906"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/wf_post_folders?post=906"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}