{"id":627,"date":"2013-10-28T14:12:00","date_gmt":"2013-10-28T13:12:00","guid":{"rendered":"https:\/\/kids.esa.int\/swarm_gets_ready_for_flight\/"},"modified":"2026-10-08T00:30:27","modified_gmt":"2026-10-07T22:30:27","slug":"swarm_gets_ready_for_flight","status":"publish","type":"post","link":"https:\/\/kids.esa.int\/fi\/swarm_gets_ready_for_flight\/","title":{"rendered":"Parvi valmistautuu lentoon"},"content":{"rendered":"
\n

Meit\u00e4 ymp\u00e4r\u00f6i n\u00e4kym\u00e4t\u00f6n magneettikentt\u00e4. Vaikka emme yleens\u00e4 huomaa sit\u00e4, maapallon magneettikentt\u00e4 on eritt\u00e4in t\u00e4rke\u00e4, sill\u00e4 se suojaa meit\u00e4 vaarallisilta aurinkomyrskyilt\u00e4 ja avaruuss\u00e4teilylt\u00e4. Ilman sit\u00e4 planeetallamme ei olisi el\u00e4m\u00e4\u00e4! Mitatakseen t\u00e4t\u00e4 magneettista voimaa entist\u00e4 tarkemmin ESA valmistautuu l\u00e4hett\u00e4m\u00e4\u00e4n kiertoradalle erityisen avaruuslennon nimelt\u00e4 Swarm.<\/p>\n<\/div>\n

Swarm-j\u00e4rjestelm\u00e4 koostuu kolmen satelliitin muodostamasta ryhm\u00e4st\u00e4, jotka kiert\u00e4v\u00e4t kolmella eri polaarisella kiertoradalla 400\u2013550 km:n korkeudella. Kukin satelliitti mittaa maapallon magneettikent\u00e4n voimakkuutta ja suuntaa.<\/p>\n

\"Earth\u2019s
Maan myrskyinen syd\u00e4n<\/figcaption><\/figure>\n

Tutkijat uskovat, ett\u00e4 magneettikentt\u00e4 syntyy maapallon ulkoytimen nesteest\u00e4, mutta he eiv\u00e4t viel\u00e4k\u00e4\u00e4n t\u00e4ysin ymm\u00e4rr\u00e4, miten se syntyy ja miten se muuttuu ajan my\u00f6t\u00e4.<\/p>\n

Esimerkiksi magneettisten pohjois- ja etel\u00e4napojen sijainnit muuttuvat jatkuvasti. My\u00f6s magneettikent\u00e4n voimakkuus vaihtelee. Ajoittain navat jopa vaihtavat paikkaa, jolloin nykyinen pohjoisnapa muuttuu etel\u00e4navaksi. T\u00e4ll\u00f6in magneettikompassi osoittaisi etel\u00e4\u00e4n pohjoisen sijaan! Tutkijat toivovat, ett\u00e4 Swarm-missio pystyy ratkaisemaan n\u00e4m\u00e4 ja monet muut magneettiset mysteerit.<\/p>\n

Swarm laukaistaan Plesetskin avaruuskeskuksesta Pohjois-Ven\u00e4j\u00e4lt\u00e4 22. marraskuuta 2013.<\/p>","protected":false},"excerpt":{"rendered":"

There is an invisible magnetic field all around us. Although we don\u2019t normally notice it, the Earth\u2019s magnetic field is very important as it protects us from dangerous solar storms […]<\/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\/2013\/10\/swarm_constellation_over_earth2\/18246698-2-eng-GB\/Swarm_constellation_over_Earth.jpg","esa_banner_description":"Swarm constellation over Earth","esa_banner_credit":"ESA\/AOES Medialab","esa_banner_licence":"ESA Standard Licence","esa_banner_detail_url":"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2013\/10\/Swarm_constellation_over_Earth2","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-627","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\/627","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=627"}],"version-history":[{"count":4,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/posts\/627\/revisions"}],"predecessor-version":[{"id":4594,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/posts\/627\/revisions\/4594"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/media?parent=627"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/categories?post=627"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/tags?post=627"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/panel?post=627"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/language?post=627"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/age?post=627"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/duration?post=627"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/resource_type?post=627"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/audience?post=627"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/wf_post_folders?post=627"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}