{"id":970,"date":"2005-07-11T09:32:00","date_gmt":"2005-07-11T07:32:00","guid":{"rendered":"https:\/\/kids.esa.int\/history_s_greatest_comet_hunter\/"},"modified":"2026-10-08T00:34:21","modified_gmt":"2026-10-07T22:34:21","slug":"history_s_greatest_comet_hunter","status":"publish","type":"post","link":"https:\/\/kids.esa.int\/sv\/history_s_greatest_comet_hunter\/","title":{"rendered":"Historiens fr\u00e4msta kometj\u00e4gare"},"content":{"rendered":"<div class=\"lede\">\n<p>Emellan\u00e5t kan man med blotta \u00f6gat se en ljus komet med l\u00e5nga svansar. Under de senaste \u00e5ren har dock rymdsonden SOHO, som drivs av ESA och NASA, visat att dessa \u201csmutsiga sn\u00f6bollar\u201d \u00e4r mycket vanligare \u00e4n n\u00e5gon kunde f\u00f6rest\u00e4lla sig.<\/p>\n<\/div>\n<p>SOHO konstruerades f\u00f6r att observera solen, inte f\u00f6r att leta efter kometer. Ett av dess instrument, som kallas LASCO, anv\u00e4nds f\u00f6r att observera solens yttre atmosf\u00e4r (koronan). Men tack vare detta har SOHO ocks\u00e5 blivit den fr\u00e4msta kometj\u00e4garen genom tiderna.<\/p>\n<p>LASCO studerar den svaga koronan genom att sk\u00e4rma av det starka ljuset fr\u00e5n solen. Av en slump g\u00f6r detta ocks\u00e5 att LASCO kan uppt\u00e4cka sm\u00e5 kometer som passerar n\u00e4ra solen. De flesta av dessa isiga inkr\u00e4ktare sveper f\u00f6rbi p\u00e5 ett avst\u00e5nd av h\u00f6gst 800 000 km fr\u00e5n solens yta \u2013 s\u00e5 n\u00e4ra att de f\u00f6r\u00e5ngas eller st\u00f6rtar ner i solens gl\u00f6dande ugn.<\/p>\n<figure class=\"wp-block-image size-large\" data-width=\"3055\" data-credit=\"ESA\" data-detail-url=\"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2000\/09\/SOHO_spacecraft2\" 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\/2000\/09\/soho_spacecraft2\/17865750-3-eng-GB\/SOHO_spacecraft.jpg\" alt=\"SOHO spacecraft\"><figcaption>Rymdfarkosten SOHO<\/figcaption><\/figure>\n<p>Innan SOHO sk\u00f6ts upp i december 1995 hade endast 16 kometer som passerar n\u00e4ra solen uppt\u00e4ckts av rymdfarkoster. Den 6 juli 2005 hade enbart SOHO hittat inte mindre \u00e4n 990 stycken. Detta inneb\u00e4r att SOHO har uppt\u00e4ckt n\u00e4stan h\u00e4lften av alla kometer vars banor har ber\u00e4knats sedan m\u00e4tningarna inleddes. Den h\u00e4pnadsv\u00e4ckande siffran f\u00f6rv\u00e4ntas passera 1 000 i sommar och forts\u00e4tta att stiga.<\/p>\n<p>M\u00e5nga av dessa uppt\u00e4ckter har gjorts av amat\u00f6rer som anv\u00e4nt SOHO-bilder p\u00e5 internet. SOHO-kometj\u00e4garna kommer fr\u00e5n m\u00e5nga olika l\u00e4nder, bland annat USA, Storbritannien, Kina, Japan, Taiwan, Ryssland, Ukraina, Frankrike, Tyskland och Litauen.<\/p>\n<p>Kometer best\u00e5r av is och stoft \u2013 \u2018rester\u2019 fr\u00e5n planeternas bildande f\u00f6r 4,5 miljarder \u00e5r sedan.<\/p>\n<nav class=\"related\" aria-label=\"Relaterat\">\n<h2 class=\"related__heading\">Relaterat<\/h2>\n<div class=\"grid related__grid\">\n<div class=\"grid-item\">\n<article class=\"card focuson agency\"><a class=\"card__link\" href=\"\/sv\/build_a_soho_spacecraft\/\"><\/p>\n<figure class=\"thumbnail\"><img decoding=\"async\" class=\"image-bg\" src=\"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\" alt=\"Test your skills - build your own SOHO spacecraft\" loading=\"lazy\"><span class=\"dimmer\"><\/span><\/figure>\n<header class=\"entry\">\n<h3 class=\"heading\">Testa dina kunskaper \u2013 bygg din egen SOHO-rymdkapsel<\/h3>\n<\/header>\n<p><\/a><\/article>\n<\/div>\n<\/div>\n<\/nav>","protected":false},"excerpt":{"rendered":"<p>From time to time a bright comet with long, trailing tails becomes visible with the naked eye. However, in recent years the ESA \/ NASA SOHO spacecraft has shown that [&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\/2003\/09\/soho_see_two_comets_plunging_into_the_sun2\/17885766-2-eng-GB\/SOHO_see_two_comets_plunging_into_the_Sun.gif","esa_banner_description":"SOHO see two comets plunging into the Sun","esa_banner_credit":"SOHO\/LASCO (ESA\/NASA)","esa_banner_licence":"ESA Standard Licence","esa_banner_detail_url":"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2003\/09\/SOHO_see_two_comets_plunging_into_the_Sun2","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":[46,10,11],"tags":[],"panel":[],"language":[],"age":[],"duration":[],"resource_type":[],"audience":[],"wf_post_folders":[],"class_list":["post-970","post","type-post","status-publish","format-standard","hentry","category-comets-and-meteors","category-learn","category-our-universe"],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/posts\/970","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=970"}],"version-history":[{"count":4,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/posts\/970\/revisions"}],"predecessor-version":[{"id":4763,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/posts\/970\/revisions\/4763"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/media?parent=970"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/categories?post=970"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/tags?post=970"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/panel?post=970"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/language?post=970"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/age?post=970"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/duration?post=970"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/resource_type?post=970"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/audience?post=970"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/wf_post_folders?post=970"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}