{"id":926,"date":"2004-11-15T13:21:00","date_gmt":"2004-11-15T12:21:00","guid":{"rendered":"https:\/\/kids.esa.int\/soho\/"},"modified":"2026-10-08T00:33:51","modified_gmt":"2026-10-07T22:33:51","slug":"soho","status":"publish","type":"post","link":"https:\/\/kids.esa.int\/fi\/soho\/","title":{"rendered":"SOHO"},"content":{"rendered":"

ESA:n ja NASA:n SOHO-niminen avaruusalus on tarkkaillut aurinkoa jatkuvasti vuodesta 1996 l\u00e4htien. SOHO sijaitsee 1,5 miljoonan kilometrin p\u00e4\u00e4ss\u00e4, Maan aurinkoa kohti olevalla puolella. Sielt\u00e4 k\u00e4sin sill\u00e4 on erinomainen n\u00e4kym\u00e4 auringon pinnalla raivoaviin myrskyihin.<\/p>\n

\"Artist's
Taiteilijan n\u00e4kemys SOHOsta<\/figcaption><\/figure>\n

SOHO l\u00e4hett\u00e4\u00e4 joka p\u00e4iv\u00e4 upeita kuvia takaisin Maahan. Niiden avulla tutkijat voivat oppia lis\u00e4\u00e4 Auringon alati muuttuvasta pinnasta ja tutkia sen pinnan alla virtaavia kaasuvirtauksia. SOHO pystyy jopa etsim\u00e4\u00e4n auringonpilkkuja ja -myrskyj\u00e4, jotka muuten j\u00e4isiv\u00e4t n\u00e4kym\u00e4tt\u00f6miin Auringon k\u00e4\u00e4nt\u00f6puolella.<\/p>\n

SOHO pystyy my\u00f6s ennustamaan \u2018avaruuss\u00e4\u00e4ilmi\u00f6it\u00e4\u2019, jotka vaikuttavat planeettaamme. T\u00e4h\u00e4n kuuluu ennakkovaroitus nopeasti liikkuvista kuumien kaasupilvien tulvasta, jonka Aurinko l\u00e4hett\u00e4\u00e4 kohti Maata. N\u00e4m\u00e4 pilvet voivat aiheuttaa s\u00e4hk\u00f6katkoja, h\u00e4irit\u00e4 radioviestint\u00e4\u00e4 ja vahingoittaa satelliitteja.<\/p>\n

SOHO:n 12 mittauslaitetta tutkivat Auringon kuumaa sis\u00e4osaa, sen n\u00e4kyv\u00e4\u00e4 pintaa ja myrskyis\u00e4\u00e4 ilmakeh\u00e4\u00e4 aina kaukaisiin alueisiin asti, joissa Auringon tuuli kohtaa kaukaisista t\u00e4hdist\u00e4 tulevan atomien tuulen.<\/p>\n

L\u00f6yd\u00f6ksiin kuuluvat muun muassa monimutkaiset kaasuvirtaukset, jotka kulkevat Auringon n\u00e4kyv\u00e4n pinnan alla, sek\u00e4 magneettikenttien rakenteessa tapahtuvat nopeat muutokset. Auringon ilmakeh\u00e4ss\u00e4 SOHO havaitsee my\u00f6s r\u00e4j\u00e4hdyksi\u00e4, aaltoilevia paineaaltoja ja tornadoja.<\/p>\n

SOHO:n kuvista on l\u00f6ydetty my\u00f6s tuhansia aurinkoa hipovia komeettoja.<\/p>","protected":false},"excerpt":{"rendered":"

An ESA\/NASA spacecraft called SOHO has been constantly watching the Sun since 1996. SOHO is stationed 1.5 million kilometres away, on the sunward side of the Earth. From there, it […]<\/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\/11\/artist_s_impression_of_soho_spacecraft2\/17874814-2-eng-GB\/Artist_s_impression_of_SOHO_spacecraft.jpg","esa_banner_description":"Artist's impression of SOHO spacecraft","esa_banner_credit":"ESA","esa_banner_licence":"ESA Standard Licence","esa_banner_detail_url":"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2003\/11\/Artist_s_impression_of_SOHO_spacecraft2","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":[10,11,35],"tags":[2],"panel":[],"language":[],"age":[],"duration":[],"resource_type":[],"audience":[],"wf_post_folders":[],"class_list":["post-926","post","type-post","status-publish","format-standard","hentry","category-learn","category-our-universe","category-the-sun","tag-background-article"],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/posts\/926","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=926"}],"version-history":[{"count":4,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/posts\/926\/revisions"}],"predecessor-version":[{"id":4743,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/posts\/926\/revisions\/4743"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/media?parent=926"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/categories?post=926"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/tags?post=926"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/panel?post=926"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/language?post=926"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/age?post=926"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/duration?post=926"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/resource_type?post=926"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/audience?post=926"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/wf_post_folders?post=926"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}