{"id":781,"date":"2011-07-27T12:48:00","date_gmt":"2011-07-27T10:48:00","guid":{"rendered":"https:\/\/kids.esa.int\/pioneering_satellite_reaches_retirement\/"},"modified":"2026-10-08T00:32:11","modified_gmt":"2026-10-07T22:32:11","slug":"pioneering_satellite_reaches_retirement","status":"publish","type":"post","link":"https:\/\/kids.esa.int\/sv\/pioneering_satellite_reaches_retirement\/","title":{"rendered":"Banbrytande satellit g\u00e5r i pension"},"content":{"rendered":"
\n

En av ESA:s \u00e4ldsta aktiva satelliter ska snart tas ur drift, efter att ha kretsat runt jorden n\u00e4stan 85 000 g\u00e5nger och tillryggalagt cirka 3,8 miljarder km. Satelliten European Remote Sensing 2 (ERS-2) sk\u00f6ts upp 1995. Nu har ESA beslutat att ta den ur drift innan den slutar fungera och blir ett hot mot andra rymdfarkoster.<\/p>\n<\/div>\n

Fr\u00e5n och med den 6 juli kommer en serie man\u00f6vrer med styrraketerna gradvis att s\u00e4nka dess omloppsbana fr\u00e5n 800 km till cirka 550 km, d\u00e4r risken f\u00f6r kollision med andra satelliter \u00e4r liten. Ist\u00e4llet f\u00f6r att bli rymdskrot kommer ERS-2 s\u00e5 sm\u00e5ningom att tr\u00e4nga in i jordens atmosf\u00e4r och brinna upp.<\/p>\n

ERS-1 (som var i drift mellan 1991 och 2000) och dess systersatellit hade en l\u00e5ng och framg\u00e5ngsrik karri\u00e4r. Tillsammans levererade de en kontinuerlig str\u00f6m av data under en period p\u00e5 20 \u00e5r, vilket revolutionerade forskningen om jordens atmosf\u00e4r, land, hav och polaris.<\/p>\n

\"ERS-2
Satelliten ERS-2 och dess till\u00e4mpningar<\/figcaption><\/figure>\n

Bland deras instrument fanns den f\u00f6rsta icke-milit\u00e4ra radarn i rymden. Den kunde observera ytan oavsett v\u00e4der, dag som natt, och var d\u00e4rmed i st\u00e5nd att \u00f6vervaka hur marken r\u00f6r sig vid kraftiga jordb\u00e4vningar eller vulkanutbrott. Den kunde dessutom kartl\u00e4gga landytans h\u00f6jd.<\/p>\n

Andra instrument m\u00e4tte den globala havsytetemperaturen och f\u00f6r\u00e4ndringar i havsniv\u00e5n, vilket \u00e4r viktig information f\u00f6r forskare som studerar klimatf\u00f6r\u00e4ndringar. Ett annat viktigt experiment ombord p\u00e5 ERS-2 \u00f6vervakade f\u00f6r\u00e4ndringarna i storlek och l\u00e4ge hos ett enormt h\u00e5l i ozonskiktet ovanf\u00f6r Antarktis.<\/p>\n

Tusentals forskningsprojekt och vetenskapliga artiklar har baserats p\u00e5 data fr\u00e5n ERS. Den information som satelliterna skickade tillbaka har f\u00f6rdjupat v\u00e5r f\u00f6rst\u00e5else f\u00f6r hur jorden fungerar. Och vidareutvecklade versioner av de instrument som de var utrustade med anv\u00e4nds idag i uppdrag som ESA:s Envisat, Earth Explorers och Sentinels.<\/p>","protected":false},"excerpt":{"rendered":"

One of ESA\u2019s oldest working satellites is about to be retired, after orbiting Earth almost 85,000 times and travelling some 3.8 billion km. The second European Remote Sensing (ERS-2) satellite […]<\/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\/2011\/07\/ers-2_satellite2\/17883510-2-eng-GB\/ERS-2_satellite.jpg","esa_banner_description":"ERS-2 satellite","esa_banner_credit":"ESA","esa_banner_licence":"ESA Standard Licence","esa_banner_detail_url":"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2011\/07\/ERS-2_satellite2","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":[42,10,66],"tags":[],"panel":[],"language":[],"age":[],"duration":[],"resource_type":[],"audience":[],"wf_post_folders":[],"class_list":["post-781","post","type-post","status-publish","format-standard","hentry","category-earth","category-learn","category-water-world"],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/posts\/781","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/comments?post=781"}],"version-history":[{"count":4,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/posts\/781\/revisions"}],"predecessor-version":[{"id":4679,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/posts\/781\/revisions\/4679"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/media?parent=781"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/categories?post=781"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/tags?post=781"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/panel?post=781"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/language?post=781"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/age?post=781"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/duration?post=781"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/resource_type?post=781"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/audience?post=781"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/wf_post_folders?post=781"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}