{"id":874,"date":"2011-04-29T12:55:00","date_gmt":"2011-04-29T10:55:00","guid":{"rendered":"https:\/\/kids.esa.int\/life_after_space\/"},"modified":"2026-10-08T00:33:15","modified_gmt":"2026-10-07T22:33:15","slug":"life_after_space","status":"publish","type":"post","link":"https:\/\/kids.esa.int\/fi\/life_after_space\/","title":{"rendered":"El\u00e4m\u00e4 avaruusmatkan j\u00e4lkeen"},"content":{"rendered":"
\n

Avaruuslento voi kest\u00e4\u00e4 viikosta kuuteen kuukauteen, mutta mit\u00e4 tapahtuu, kun miehist\u00f6 palaa Maahan? Muutamassa tunnissa he siirtyv\u00e4t painottomasta ymp\u00e4rist\u00f6st\u00e4 normaaliin painovoimaan. Sen sijaan, ett\u00e4 el\u00e4isiv\u00e4t paikassa, jossa kaikki kelluu, he palaavat planeetalle, jossa jokainen liike vaatii ponnistusta.<\/p>\n<\/div>\n

Sopeutuminen uudelleen Maan painovoimaan on vaikeaa, koska heid\u00e4n lihaksensa ja luunsa ovat heikentyneet, ja syd\u00e4men on teht\u00e4v\u00e4 paljon enemm\u00e4n ty\u00f6t\u00e4 pumppaakseen verta kehon eri osiin. Sojuz-avaruusaluksella palaavien astronauttien on saatava apua ven\u00e4l\u00e4isilt\u00e4 pelastushenkil\u00f6ilt\u00e4, ja heid\u00e4t kuljetetaan odottaviin helikoptereihin kotimatkan ensimm\u00e4iseksi osaksi.<\/p>\n

Jopa ne, jotka palaavat takaisin avaruussukkulalla, tuntevat usein huimausta. Jotkut saattavat py\u00f6rty\u00e4. Heill\u00e4 on my\u00f6s vaikeuksia seist\u00e4, k\u00e4vell\u00e4, k\u00e4\u00e4nty\u00e4 kulmista ja s\u00e4ilytt\u00e4\u00e4 tasapainoa. Jos he sulkevat silm\u00e4ns\u00e4, he todenn\u00e4k\u00f6isesti kaatuvat. Jopa nukkuminen voi olla vaikeaa. Jotkut kosmonautit ovat kertoneet, ett\u00e4 viel\u00e4 kuukausia lennon j\u00e4lkeen he saattavat joskus p\u00e4\u00e4st\u00e4\u00e4 irti kupista tai muusta esineest\u00e4 kesken lenton \u2013 ja j\u00e4rkyttyv\u00e4t, kun se putoaa lattialle! Sopeutuminen voi kest\u00e4\u00e4 kolmesta nelj\u00e4\u00e4n p\u00e4iv\u00e4\u00e4 lyhyiden lentojen j\u00e4lkeen, mutta nelj\u00e4 viikkoa tai enemm\u00e4n kuuden kuukauden oleskelun j\u00e4lkeen Kansainv\u00e4lisell\u00e4 avaruusasemalla.<\/p>\n

Muiden sivuvaikutusten voittaminen vie paljon kauemmin. Luun tiheyden lasku lis\u00e4\u00e4 luunmurtumien riski\u00e4. Heikentyneet lihakset vaikeuttavat jopa kevyiden esineiden nostamista tai arkip\u00e4iv\u00e4isten toimintojen suorittamista. Avaruusmatkailun ihmeit\u00e4 on kuitenkin vaikea vastustaa. Kahdeksan ihmist\u00e4 on lent\u00e4nyt avaruuteen v\u00e4hint\u00e4\u00e4n kuusi kertaa. Ven\u00e4l\u00e4inen Valeri Polyakov vietti 240 p\u00e4iv\u00e4\u00e4 kiertoradalla, ja muutama vuosi my\u00f6hemmin h\u00e4n palasi sinne viel\u00e4 437 p\u00e4iv\u00e4ksi!<\/p>","protected":false},"excerpt":{"rendered":"

A space mission may last anything from a week to six months, but what happens when the crew returns to Earth? Within a few hours, they are transported from a […]<\/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\/2000\/11\/jean-pierre_haignere_returns_from_mir2\/17866120-3-eng-GB\/Jean-Pierre_Haignere_returns_from_MIR.jpg","esa_banner_description":"","esa_banner_credit":"ESA\/CNES","esa_banner_licence":"ESA Standard Licence","esa_banner_detail_url":"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2000\/11\/Jean-Pierre_Haignere_returns_from_MIR2","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":[28,10,13],"tags":[],"panel":[],"language":[],"age":[],"duration":[],"resource_type":[],"audience":[],"wf_post_folders":[],"class_list":["post-874","post","type-post","status-publish","format-standard","hentry","category-astronauts","category-learn","category-life-in-space"],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/posts\/874","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/comments?post=874"}],"version-history":[{"count":1,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/posts\/874\/revisions"}],"predecessor-version":[{"id":2017,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/posts\/874\/revisions\/2017"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/media?parent=874"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/categories?post=874"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/tags?post=874"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/panel?post=874"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/language?post=874"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/age?post=874"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/duration?post=874"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/resource_type?post=874"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/audience?post=874"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/wf_post_folders?post=874"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}