{"id":476,"date":"2016-07-27T08:41:00","date_gmt":"2016-07-27T06:41:00","guid":{"rendered":"https:\/\/kids.esa.int\/radiation_tracker_a_must-have_bit_of_an_astronaut_kit\/"},"modified":"2026-10-08T00:28:39","modified_gmt":"2026-10-07T22:28:39","slug":"radiation_tracker_a_must-have_bit_of_an_astronaut_kit","status":"publish","type":"post","link":"https:\/\/kids.esa.int\/fi\/radiation_tracker_a_must-have_bit_of_an_astronaut_kit\/","title":{"rendered":"S\u00e4teilynseuranta: v\u00e4ltt\u00e4m\u00e4t\u00f6n osa astronautin varustusta"},"content":{"rendered":"<div class=\"lede\">\n<p>Avaruuslent\u00e4j\u00e4t kohtaavat avaruudessa monia riskej\u00e4. Yksi n\u00e4ist\u00e4 on s\u00e4teily: n\u00e4kym\u00e4t\u00f6n vaara, joka voi kuitenkin aiheuttaa vakavaa haittaa avaruusmatkailijoille. T\u00e4m\u00e4n uhan ymm\u00e4rt\u00e4misen helpottamiseksi on kehitetty uusi laite.<\/p>\n<\/div>\n<p>S\u00e4teily\u00e4 tulee avaruuden eri puolilta, kuten Auringosta ja kaukaisista kuolevista t\u00e4hdist\u00e4. S\u00e4teily vahingoittaa kehomme soluja ja voi aiheuttaa vakavia sairauksia \u2013 jopa kuoleman. T\u00e4\u00e4ll\u00e4 Maan pinnalla meit\u00e4 suojaa t\u00e4lt\u00e4 s\u00e4teilylt\u00e4 planeettamme magneettikentt\u00e4. Se toimii suojakilpen\u00e4 ja pit\u00e4\u00e4 meid\u00e4t turvassa. Avaruudessa olevat astronautit ovat kuitenkin suuremmassa altistumisriskiss\u00e4.<\/p>\n<figure class=\"wp-block-image size-large\" data-width=\"1280\" data-credit=\"ESA\" data-detail-url=\"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2016\/07\/EuCPAD_units_will_be_worn_by_astronauts\" 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\/2016\/07\/eucpad_units_will_be_worn_by_astronauts\/17911565-2-eng-GB\/EuCPAD_units_will_be_worn_by_astronauts.jpg\" alt=\"EuCPAD units will be worn by astronauts\"><figcaption>Astronautit tulevat k\u00e4ytt\u00e4m\u00e4\u00e4n EuCPAD-laitteita<\/figcaption><\/figure>\n<p>Astronautit k\u00e4ytt\u00e4v\u00e4t jo nyt antureita, jotka laskevat heid\u00e4n kokonaiss\u00e4teilyaltistuksensa ajan mittaan. Antureiden tiedot voidaan kuitenkin lukea vasta heid\u00e4n palattuaan Maahan, erityisess\u00e4 laboratoriossa.<\/p>\n<p>Jotta tilannekuva olisi tarkempi, tutkijat ja insin\u00f6\u00f6rit ovat kehitt\u00e4neet European Crew Personal Active Dosimeter -laitteen, jota kutsutaan lyhyesti EuCPAD:ksi. \u00c4lypuhelimen kokoinen mittari tallentaa k\u00e4ytt\u00e4j\u00e4ns\u00e4 s\u00e4teilyaltistusta jatkuvasti.<\/p>\n<p>Sitten astronautit voivat kytke\u00e4 ne suurempaan laitteeseen, kuten \u00e4lypuhelimen telakkaan, akkujen lataamiseksi ja tulosten lataamiseksi. Astronautit ja maassa olevat tutkijat voivat sitten saada s\u00e4\u00e4nn\u00f6llisi\u00e4 p\u00e4ivityksi\u00e4 s\u00e4teilyolosuhteista: ovatko avaruusaluksen tietyt osat suojattuja paremmin kuin toiset?<\/p>\n<figure class=\"wp-block-image size-large\" data-width=\"1279\" data-credit=\"ESA\" data-detail-url=\"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2016\/07\/ESA_astronaut_Andreas_Mogensen_has_tested_a_EuCPAD\" 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\/2016\/07\/esa_astronaut_andreas_mogensen_has_tested_a_eucpad\/17883954-2-eng-GB\/ESA_astronaut_Andreas_Mogensen_has_tested_a_EuCPAD.jpg\" alt=\"ESA astronaut Andreas Mogensen has tested a EuCPAD\"><figcaption>ESA:n avaruuslent\u00e4j\u00e4 Andreas Mogensen on testannut EuCPAD-laitetta<\/figcaption><\/figure>\n<p>ESA:n astronautti Andreas Mogensen testasi EuCPAD-n\u00e4ytt\u00f6\u00e4 viime syyskuussa. Nyt EuCPAD-lukulaite on toimitettu Kansainv\u00e4liselle avaruusasemalle, ja se on valmiina ESA:n astronautti Thomas Pesquet\u2019n k\u00e4ytt\u00f6\u00f6n yhdess\u00e4 t\u00e4m\u00e4n oman n\u00e4yt\u00f6n kanssa, kun h\u00e4nen teht\u00e4v\u00e4ns\u00e4 siell\u00e4 alkaa marraskuussa.<\/p>\n<p>EuCPAD:n tuottamat tulokset ovat varmasti korvaamattomia, kun kyse on matkoista, jotka ulottuvat Maan kiertoradan ulkopuolelle.<\/p>\n<p>Suunnitellut lennot Kuuhun ja Marsiin ovat erityisen vaarallisia, koska ne viev\u00e4t astronautit kauas Maan magneettikent\u00e4n suojaavasta vaipasta. Astronauttien s\u00e4teilyaltistuksen reaaliaikainen seuranta auttaa kuitenkin tutkijoita kehitt\u00e4m\u00e4\u00e4n suojausmenetelmi\u00e4, joilla miehist\u00f6n turvallisuus voidaan taata matkojen aikana.<\/p>\n<p><b>Mielenkiintoinen fakta:<\/b> EuCPAD-laitteet ovat niin kehittyneit\u00e4, ett\u00e4 ne pystyv\u00e4t tunnistamaan s\u00e4teilyn l\u00e4hteen, olipa kyseess\u00e4 sitten aurinko tai kaukaa galaksistamme tuleva kosmisen s\u00e4teily!<\/p>","protected":false},"excerpt":{"rendered":"<p>Astronauts face many risks in space. One of these is radiation: an invisible danger but one that can cause serious harm to space travellers. A new gadget has been developed [&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\/2016\/07\/radiation_from_space_is_dangerous_for_astronauts\/17888061-2-eng-GB\/Radiation_from_space_is_dangerous_for_astronauts.jpg","esa_banner_description":"Radiation from space is dangerous for astronauts","esa_banner_credit":"SSA","esa_banner_licence":"ESA Standard Licence","esa_banner_detail_url":"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2016\/07\/Radiation_from_space_is_dangerous_for_astronauts","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":[],"panel":[],"language":[],"age":[],"duration":[],"resource_type":[],"audience":[],"wf_post_folders":[],"class_list":["post-476","post","type-post","status-publish","format-standard","hentry","category-learn","category-life-in-space","category-living-in-space"],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/posts\/476","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=476"}],"version-history":[{"count":4,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/posts\/476\/revisions"}],"predecessor-version":[{"id":4505,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/posts\/476\/revisions\/4505"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/media?parent=476"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/categories?post=476"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/tags?post=476"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/panel?post=476"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/language?post=476"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/age?post=476"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/duration?post=476"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/resource_type?post=476"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/audience?post=476"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/wf_post_folders?post=476"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}