{"id":309,"date":"2019-01-22T09:44:55","date_gmt":"2019-01-22T08:44:55","guid":{"rendered":"https:\/\/kids.esa.int\/the_mystery_of_the_lunar_lights\/"},"modified":"2026-10-08T00:26:41","modified_gmt":"2026-10-07T22:26:41","slug":"the_mystery_of_the_lunar_lights","status":"publish","type":"post","link":"https:\/\/kids.esa.int\/sv\/the_mystery_of_the_lunar_lights\/","title":{"rendered":"Mysteriet med m\u00e5nljuset"},"content":{"rendered":"<div class=\"lede\">\n<p>I tusentals \u00e5r har det f\u00f6rekommit rapporter om m\u00e4nniskor som sett starka ljusblixtar p\u00e5 m\u00e5nen. Vad kan det vara? M\u00e4rkliga ljus i jordens atmosf\u00e4r? Tecken p\u00e5 utomjordiska bes\u00f6kare? Eller har alla dessa m\u00e4nniskor tagit fel? Ett ESA-projekt vid namn NELIOTA har h\u00e5llit utkik efter dessa blixtar, och resultaten \u00e4r fascinerande!<\/p>\n<\/div>\n<p>NELIOTA st\u00e5r f\u00f6r Near-Earth Object Lunar Impacts and Optical TrAnsients. Projektet anv\u00e4nder ett stort teleskop som drivs av Nationalobservatoriet i Aten och som \u00e4r utrustat med en specialkamera som tar m\u00e5nga bilder p\u00e5 mycket kort tid. Med hj\u00e4lp av denna utrustning har NELIOTA-forskarna observerat m\u00e5nen och samlat in data. De har uppt\u00e4ckt m\u00e5nga av dessa m\u00e4rkliga blixtar p\u00e5 m\u00e5nen \u2013 i genomsnitt en varannan timme! S\u00e5, vad \u00e4r det egentligen?<\/p>\n<p>Det finns massor av sm\u00e5 stenbitar och annat material i rymden, och ibland kraschar de in i en planet eller en m\u00e5ne. N\u00e4r detta h\u00e4nder p\u00e5 jorden brinner de ofta upp i v\u00e5r atmosf\u00e4r och bildar det vi kallar en meteor (som ibland kallas \u201cstj\u00e4rnfall\u201d). V\u00e5r m\u00e5ne har dock ingen atmosf\u00e4r, s\u00e5 n\u00e4r sm\u00e5 stenar kraschar in i den sl\u00e5r de mot ytan och skapar en kort blixt!<\/p>\n<figure class=\"wp-block-image size-large\" data-width=\"947\" data-credit=\"NELIOTA project\" data-detail-url=\"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2018\/12\/Locations_of_lunar_impact_flashes\" 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\/12\/locations_of_lunar_impact_flashes\/18933831-3-eng-GB\/Locations_of_lunar_impact_flashes.png\" alt=\"Locations of lunar impact flashes detected by the NELIOTA project\"><figcaption>Platser d\u00e4r m\u00e5nens nedslagsblixtar har uppt\u00e4ckts inom ramen f\u00f6r NELIOTA-projektet<\/figcaption><\/figure>\n<p>Det kraftfulla NELIOTA-teleskopet och kameran har visat att blixtarna \u00e4r ganska vanliga, \u00e4ven om endast de allra starkaste kan ses med blotta \u00f6gat. Det \u00e4r dock sv\u00e5rt att registrera dem, eftersom nedslagen m\u00e5ste ske p\u00e5 delar av m\u00e5nen som f\u00f6r tillf\u00e4llet inte \u00e4r belysta av solen. Annars \u00e4r de omgivande m\u00e5nstenarna s\u00e5 ljusa att de d\u00f6ljer blixtarna. ESA:s forskare har hittills registrerat 55 blixtar, men r\u00e4knar med att de i sj\u00e4lva verket bara ser en liten del av det totala antalet, som troligen uppg\u00e5r till omkring \u00e5tta blixtar per timme!\u00a0<\/p>\n<figure class=\"wp-block-image size-natural\" data-width=\"625\" data-credit=\"Theofanis Matsopoulos\" data-detail-url=\"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2018\/12\/The_Kryoneri_Observatory_the_world_s_largest_eye_on_the_Moon\" 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\/12\/the_kryoneri_observatory_the_world_s_largest_eye_on_the_moon\/18934221-1-eng-GB\/The_Kryoneri_Observatory_the_world_s_largest_eye_on_the_Moon.jpg\" alt=\"The Kryoneri Observatory \u2013 the world&#x27;s largest eye on the Moon\"><figcaption>Kryoneri-observatoriet \u2013 v\u00e4rldens st\u00f6rsta \u201d\u00f6ga\u201d p\u00e5 m\u00e5nen<\/figcaption><\/figure>\n<p>Denna forskning \u00e4r viktig av flera sk\u00e4l. F\u00f6r det f\u00f6rsta hj\u00e4lper den oss att l\u00e4ra oss mer om m\u00e5nen och varf\u00f6r dess kraterrika yta ser ut som den g\u00f6r. Den ger oss ocks\u00e5 en b\u00e4ttre f\u00f6rst\u00e5else f\u00f6r hur m\u00e5nga jordn\u00e4ra objekt (NEO:er) \u2013 till exempel sm\u00e5 stenar i rymden, asteroider och kometer \u2013 som finns i jordens kosmiska omgivning. St\u00f6rre NEO:er kan utg\u00f6ra en fara f\u00f6r jorden om de skulle kollidera med oss, s\u00e5 ju mer information vi har, desto b\u00e4ttre kan vi f\u00f6rbereda oss f\u00f6r att skydda oss. ESA tar detta p\u00e5 allvar och planerar en ambiti\u00f6s rymdmission vid namn Hera som ska testa olika s\u00e4tt att avleda asteroider p\u00e5 kollisionskurs s\u00e5 att de inte orsakar skada.<\/p>\n<figure class=\"wp-block-image size-large\" data-width=\"3500\" data-credit=\"ESA - P.Carril\" data-detail-url=\"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2011\/10\/Space_Safety_Programme_-_Near_Earth_Objects\" 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\/2011\/10\/space_safety_programme_-_near_earth_objects\/9686616-7-eng-GB\/Space_Safety_Programme_-_Near_Earth_Objects.jpg\" alt=\"Near-Earth objects\"><figcaption>Objekt n\u00e4ra jorden<\/figcaption><\/figure>\n<p>NELIOTA-projektet skulle egentligen avslutas snart, men det har varit s\u00e5 framg\u00e5ngsrikt att man beviljat en f\u00f6rl\u00e4ngning, och experimentet kommer nu att p\u00e5g\u00e5 fram till januari 2021!<\/p>\n<p><i>Intressant fakta: NELIOTA anv\u00e4nder Kryoneri-teleskopet, som \u00e4r det st\u00f6rsta teleskopet p\u00e5 jorden och vars enda uppgift \u00e4r att \u00f6vervaka m\u00e5nen.<\/i><\/p>","protected":false},"excerpt":{"rendered":"<p>For thousands of years there have been reports of people seeing bright flashes on the Moon. What could they be? Strange lights in Earth\u2019s atmosphere? Evidence of alien visitors? Or [&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\/12\/lunar_impact_gif\/18933950-1-eng-GB\/Lunar_impact_Gif.gif","esa_banner_description":"Lunar impact Gif","esa_banner_credit":"NELIOTA project","esa_banner_licence":"ESA Standard Licence","esa_banner_detail_url":"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2018\/12\/Lunar_impact_Gif","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-309","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\/309","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=309"}],"version-history":[{"count":5,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/posts\/309\/revisions"}],"predecessor-version":[{"id":4402,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/posts\/309\/revisions\/4402"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/media?parent=309"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/categories?post=309"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/tags?post=309"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/panel?post=309"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/language?post=309"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/age?post=309"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/duration?post=309"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/resource_type?post=309"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/audience?post=309"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/wf_post_folders?post=309"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}