{"id":301,"date":"2019-02-08T10:11:19","date_gmt":"2019-02-08T09:11:19","guid":{"rendered":"https:\/\/kids.esa.int\/worms_in_space\/"},"modified":"2026-10-08T00:26:36","modified_gmt":"2026-10-07T22:26:36","slug":"worms_in_space","status":"publish","type":"post","link":"https:\/\/kids.esa.int\/fi\/worms_in_space\/","title":{"rendered":"Matoja avaruudessa!"},"content":{"rendered":"<div class=\"lede\">\n<p>Avaruuteen l\u00e4hteminen on j\u00e4nnitt\u00e4v\u00e4 seikkailu, mutta jotkut asiat ovat astronautille eritt\u00e4in vaikeita. Kunnon yll\u00e4pit\u00e4minen ja hyv\u00e4n lihasvoiman s\u00e4ilytt\u00e4minen on todellinen haaste, sill\u00e4 lihakset ja luut heikkenev\u00e4t painottomuudessa. Kansainv\u00e4lisell\u00e4 avaruusasemalla leijailu on hauskaa, mutta se ei ole terveydelle hyv\u00e4ksi, kun siell\u00e4 viett\u00e4\u00e4 useita kuukausia!<\/p>\n<\/div>\n<p>ESA:n tutkijat pyrkiv\u00e4t auttamaan astronautteja ratkaisemaan t\u00e4m\u00e4n ongelman. He k\u00e4ytt\u00e4v\u00e4t matoa, jolla on tarttuva nimi <i>Caenorhabditis elegans<\/i> (<i>C. elegans <\/i>(lyhennettyn\u00e4) auttaakseen heit\u00e4. He havaitsivat, ett\u00e4 lihakset <i>C. elegans<\/i> muuttuvat painottomuudessa hyvin samankaltaisella tavalla kuin ihmisen lihakset. Ehk\u00e4p\u00e4 n\u00e4it\u00e4 pieni\u00e4 matoja \u2013 joista kukin on alle 1 mm pitk\u00e4 \u2013 voitaisiin k\u00e4ytt\u00e4\u00e4 osana avaruuskokeita t\u00e4m\u00e4n tutkimuksen edist\u00e4miseksi?<\/p>\n<figure class=\"wp-block-image size-large\" data-width=\"4928\" data-credit=\"ESA\/NASA\" data-detail-url=\"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2015\/09\/Samantha_running_in_space\" data-licence=\"ESA Standard Licence\" data-licence-url=\"https:\/\/www.esa.int\/ESA_Multimedia\/Terms_and_conditions_of_use_of_images_and_videos_available_on_the_esa_website\"><img decoding=\"async\" loading=\"lazy\" style=\"max-width:100%;height:auto\" src=\"https:\/\/www.esa.int\/var\/esa\/storage\/images\/esa_multimedia\/images\/2015\/09\/samantha_running_in_space\/15629558-1-eng-GB\/Samantha_running_in_space.jpg\" alt=\"Samantha running in space\"><figcaption>Samantha juoksee avaruudessa<\/figcaption><\/figure>\n<p>Tim Etheridge on vanhempi lehtori Exeterin yliopistossa Isossa-Britanniassa. H\u00e4n selitt\u00e4\u00e4: \u201cMatoja voidaan \u2013 ehk\u00e4 yll\u00e4tt\u00e4v\u00e4sti \u2013 pit\u00e4\u00e4 hyv\u00e4n\u00e4 mallina ihmisen lihaksille. Molekyylitasolla ne ovat ihmisen lihasten kaltaisia, ja ne tarjoavat etuja avaruuslentojen tutkimukselle \u2013 ne ovat hyvin pieni\u00e4, kasvavat nopeasti ja ovat lis\u00e4ksi edullisia ja helppohoitoisia!\u201d<\/p>\n<figure class=\"wp-block-image size-large\" data-width=\"5568\" data-credit=\"ESA\/NASA\" data-detail-url=\"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2018\/09\/Dragon_CRS-14\" data-licence=\"ESA Standard Licence\" data-licence-url=\"https:\/\/www.esa.int\/ESA_Multimedia\/Terms_and_conditions_of_use_of_images_and_videos_available_on_the_esa_website\"><img decoding=\"async\" loading=\"lazy\" style=\"max-width:100%;height:auto\" src=\"https:\/\/www.esa.int\/var\/esa\/storage\/images\/esa_multimedia\/images\/2018\/09\/dragon_crs-14\/17675991-2-eng-GB\/Dragon_CRS-14.jpg\" alt=\"Dragon spacecraft leaving Space Station\"><figcaption>Dragon-avaruusalus l\u00e4htee avaruusasemalta<\/figcaption><\/figure>\n<p>Tuhansia vauvoja <i>C. elegans<\/i> Matoja laitettiin erityisiin pusseihin, joissa ne pystyiv\u00e4t el\u00e4m\u00e4\u00e4n varsin tyytyv\u00e4isin\u00e4, sill\u00e4 niill\u00e4 oli tilaa ja ravinteita kasvaa ja lis\u00e4\u00e4nty\u00e4. Sen j\u00e4lkeen ne lastattiin Dragon-avaruusalukselle ja laukaistiin kansainv\u00e4liselle avaruusasemalle! ESA:n astronautti Alexander Gerst sijoitti matot inkubaattoriin, joka oli suunniteltu auttamaan niit\u00e4 kasvamaan nopeasti ja turvallisesti. Alle viikon kuluttua ne olivat t\u00e4ysin kasvaneet, kaikki painottomissa olosuhteissa. Matoja pakastettiin sen j\u00e4lkeen, jotta ne olisivat valmiina palautettaviksi Maahan tutkimusta varten. Samaan aikaan muita matoer\u00e4 on kasvatettu normaaleissa olosuhteissa Maassa, jotta eroja voidaan verrata.<\/p>\n<p>Tutkimusmatkan tutkijat toivovat, ett\u00e4 kokeen avulla saadaan lis\u00e4tietoa my\u00f6s diabeteksen mahdollisesta syyst\u00e4 sek\u00e4 lihasdystrofiasta, jossa ihmisten lihakset heikkenev\u00e4t ja rappeutuvat. Tutkimus auttaa siis paitsi avaruudessa olevia astronautteja my\u00f6s sairauksista k\u00e4rsivi\u00e4 ihmisi\u00e4 maan p\u00e4\u00e4ll\u00e4!<\/p>\n<p><i>Mielenkiintoinen fakta: matojen vieminen avaruuteen oli todellinen kilpajuoksu aikaa vastaan, sill\u00e4 ne pystyiv\u00e4t selviytym\u00e4\u00e4n vain 160 tuntia, ennen kuin ne oli saatava avaruusaseman inkubaattoriin<\/i><\/p>","protected":false},"excerpt":{"rendered":"<p>Going into space is an exciting adventure, but some things are very difficult for astronauts. Keeping fit and having good muscle strength is a real challenge, as muscles and bones [&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\/2018\/12\/neuronal_deterioration_of_worm_during_ageing\/18935244-1-eng-GB\/Neuronal_deterioration_of_worm_during_ageing.jpg","esa_banner_description":"Neuronal deterioration of worm during ageing","esa_banner_credit":"ESA","esa_banner_licence":"ESA Standard Licence","esa_banner_detail_url":"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2018\/12\/Neuronal_deterioration_of_worm_during_ageing","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-301","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\/fi\/wp-json\/wp\/v2\/posts\/301","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=301"}],"version-history":[{"count":5,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/posts\/301\/revisions"}],"predecessor-version":[{"id":4397,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/posts\/301\/revisions\/4397"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/media?parent=301"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/categories?post=301"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/tags?post=301"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/panel?post=301"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/language?post=301"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/age?post=301"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/duration?post=301"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/resource_type?post=301"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/audience?post=301"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/wf_post_folders?post=301"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}