{"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\/da\/pioneering_satellite_reaches_retirement\/","title":{"rendered":"Banebrydende satellit g\u00e5r p\u00e5 pension"},"content":{"rendered":"
\n

En af ESA\u2019s \u00e6ldste aktive satellitter skal snart tages ud af drift, efter at den har kredset om Jorden n\u00e6sten 85.000 gange og tilbagelagt omkring 3,8 milliarder km. Den anden European Remote Sensing-satellit (ERS-2) blev opsendt i 1995. Nu har ESA besluttet at tage den ud af drift, inden den holder op med at fungere og udg\u00f8r en trussel mod andre rumfart\u00f8jer.<\/p>\n<\/div>\n

Fra den 6. juli vil en r\u00e6kke man\u00f8vrer med styremotorerne gradvist s\u00e6nke dens bane fra 800 km til ca. 550 km, hvor risikoen for kollision med andre satellitter er minimal. I stedet for at ende som rumskrot vil ERS-2 til sidst tr\u00e6nge ind i Jordens atmosf\u00e6re og br\u00e6nde op.<\/p>\n

ERS-1 (som var i drift mellem 1991 og 2000) og dens s\u00f8stersatellit havde en lang og fremragende karriere. Sammen leverede de en kontinuerlig str\u00f8m af data over en periode p\u00e5 20 \u00e5r og revolutionerede dermed forskningen i Jordens atmosf\u00e6re, landomr\u00e5der, havene og polaris.<\/p>\n

\"ERS-2
ERS-2-satellitten og dens anvendelsesomr\u00e5der<\/figcaption><\/figure>\n

Blandt deres instrumenter var den f\u00f8rste ikke-milit\u00e6re radar i rummet. Den kunne observere overfladen under alle vejrforhold, b\u00e5de dag og nat, og var dermed i stand til at overv\u00e5ge, hvordan jordoverfladen bev\u00e6ger sig under store jordsk\u00e6lv eller vulkanudbrud. Den kunne desuden kortl\u00e6gge landoverfladens h\u00f8jde.<\/p>\n

Andre instrumenter m\u00e5lte den globale havoverfladetemperatur og \u00e6ndringer i havniveauet \u2013 vigtige oplysninger for forskere, der studerer klimaforandringer. Et andet centralt eksperiment p\u00e5 ERS-2 overv\u00e5gede \u00e6ndringer i st\u00f8rrelsen og placeringen af et k\u00e6mpe hul i ozonlaget over Antarktis.<\/p>\n

Tusindvis af forskningsprojekter og videnskabelige artikler har taget udgangspunkt i data fra ERS. De oplysninger, som satellitterne har sendt tilbage, har udvidet vores forst\u00e5else af, hvordan Jorden fungerer. Og forbedrede versioner af de instrumenter, de var udstyret med, anvendes i dag p\u00e5 missioner som f.eks. ESA\u2019s Envisat, Earth Explorers og Sentinel-missionerne.<\/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\/da\/wp-json\/wp\/v2\/posts\/781","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/comments?post=781"}],"version-history":[{"count":4,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/posts\/781\/revisions"}],"predecessor-version":[{"id":4679,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/posts\/781\/revisions\/4679"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/media?parent=781"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/categories?post=781"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/tags?post=781"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/panel?post=781"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/language?post=781"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/age?post=781"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/duration?post=781"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/resource_type?post=781"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/audience?post=781"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/wf_post_folders?post=781"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}