{"id":385,"date":"2018-05-24T12:21:00","date_gmt":"2018-05-24T10:21:00","guid":{"rendered":"https:\/\/kids.esa.int\/a_space_ant_fires_its_lasers\/"},"modified":"2026-10-08T00:27:34","modified_gmt":"2026-10-07T22:27:34","slug":"a_space_ant_fires_its_lasers","status":"publish","type":"post","link":"https:\/\/kids.esa.int\/sv\/a_space_ant_fires_its_lasers\/","title":{"rendered":"En rymmmyr avfyrar sina lasrar!"},"content":{"rendered":"<div class=\"lede\">\n<p>\u201cMyror i rymden\u201d kanske l\u00e5ter som titeln p\u00e5 en science fiction-film, men astronomerna k\u00e4nner till en kosmisk myra d\u00e4r ute \u2013 Myrnebulosan! Myranebulosan ser lite ut som ett insekt, men \u00e4r i sj\u00e4lva verket en enorm samling av gas och stoft som befinner sig otroliga 8 000 ljus\u00e5r fr\u00e5n jorden. Normalt skulle man anv\u00e4nda ett f\u00f6rstoringsglas f\u00f6r att se en myra ordentligt, men f\u00f6r den h\u00e4r beh\u00f6ver man definitivt ett teleskop.<\/p>\n<\/div>\n<p>Astronomerna visste redan att Myranebulosan en g\u00e5ng var en stj\u00e4rna, kanske lite lik v\u00e5r egen Sol, men att den var ur\u00e5ldrig och hade f\u00f6rbrukat sitt f\u00f6rr\u00e5d av v\u00e4tebr\u00e4nsle. Stj\u00e4rnans yttre lager slungades ut, vilket gav upphov till den form som Myranebulosan har och som vi ser fr\u00e5n Jorden, och l\u00e4mnade kvar en vit dv\u00e4rgstj\u00e4rna i dess centrum.<\/p>\n<figure class=\"wp-block-image size-large\" data-width=\"4288\" data-credit=\"ESA\" data-detail-url=\"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2018\/05\/Herschel\" 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\/2018\/05\/herschel\/18248437-2-eng-GB\/Herschel.jpg\" alt=\"Herschel\"><figcaption>Herschel<\/figcaption><\/figure>\n<p>Nu har astronomer analyserat observationer av Ant-nebulosan som tagits av ESA:s rymdobservatorium Herschel. Detta speciella instrument ser inte den typ av ljus som v\u00e5ra \u00f6gon naturligt uppfattar, utan en annan sorts ljus som kallas infrar\u00f6tt ljus. De uppt\u00e4ckte n\u00e5got som ingen hade f\u00f6rv\u00e4ntat sig: lasrar!<\/p>\n<p>\u201cLasrar i rymden\u201d l\u00e5ter ocks\u00e5 som en science fiction-film, men det f\u00f6rekommer faktiskt p\u00e5 riktigt! Lasereffekten som uppt\u00e4ckts i Myranebulosan har ett vetenskapligt namn: laserstr\u00e5lning fr\u00e5n v\u00e4te-rekombinationslinjer. Detta \u00e4r mycket s\u00e4llsynt och hj\u00e4lper oss att l\u00e4ra oss mer om Myranebulosans inre delar.<\/p>\n<p>Astronomer tror att lasern alstras av en gasskiva n\u00e4ra den vita dv\u00e4rgstj\u00e4rnan. Normalt sett skulle det inte finnas n\u00e5gon gas s\u00e5 n\u00e4ra en vit dv\u00e4rg, s\u00e5 hur hamnade den d\u00e4r? En m\u00f6jlig f\u00f6rklaring \u00e4r att det finns en annan stj\u00e4rna i n\u00e4rheten, vilket inneb\u00e4r att den vita dv\u00e4rgen ing\u00e5r i ett dubbelstj\u00e4rnesystem. Denna andra stj\u00e4rna skulle kunna h\u00e5lla gasskivan i omloppsbana kring den vita dv\u00e4rgen och alstra lasern.<\/p>\n<figure class=\"wp-block-image size-large\" data-width=\"8101\" data-credit=\"ESA\" data-detail-url=\"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2018\/05\/Stellar_evolution\" 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\/2018\/05\/stellar_evolution\/17877849-2-eng-GB\/Stellar_evolution.jpg\" alt=\"Stellar evolution\"><figcaption>Stj\u00e4rnors utveckling<\/figcaption><\/figure>\n<p>S\u00e5 nu vet vi allts\u00e5 att det verkligen finns en myra i rymden som avfyrar lasrar \u2013 p\u00e5 s\u00e4tt och vis! Kanske kommer det en dag att g\u00f6ras en film om det\u2026<\/p>\n<p><b>Rolig fakta:<\/b> Donald Menzel, uppt\u00e4ckaren av Myranebulosan, var ocks\u00e5 den f\u00f6rsta astronomen som f\u00f6reslog att nebulosor kunde alstra naturliga lasrar \u2013 l\u00e5ngt innan vi visste att Myranebulosan gjorde just det, och till och med innan forskare hade tillverkat lasrar i laboratorier. Vilket sammantr\u00e4ffande!<\/p>","protected":false},"excerpt":{"rendered":"<p>&#8220;Ants in space&#8221; might sound like the name of a science fiction film, but astronomers know of one cosmic ant out there \u2013 the Ant Nebula! Looking a bit like [&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\/2018\/05\/ant_nebula2\/17892612-2-eng-GB\/Ant_Nebula.jpg","esa_banner_description":"Ant Nebula","esa_banner_credit":"NASA, ESA and the Hubble Heritage Team (STScI\/AURA)","esa_banner_licence":"ESA Standard Licence","esa_banner_detail_url":"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2018\/05\/Ant_Nebula2","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-385","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\/sv\/wp-json\/wp\/v2\/posts\/385","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=385"}],"version-history":[{"count":4,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/posts\/385\/revisions"}],"predecessor-version":[{"id":4432,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/posts\/385\/revisions\/4432"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/media?parent=385"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/categories?post=385"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/tags?post=385"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/panel?post=385"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/language?post=385"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/age?post=385"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/duration?post=385"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/resource_type?post=385"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/audience?post=385"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/wf_post_folders?post=385"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}