{"id":898,"date":"2008-04-24T13:12:00","date_gmt":"2008-04-24T11:12:00","guid":{"rendered":"https:\/\/kids.esa.int\/mars_radar_pioneers_3d_views_of_planets\/"},"modified":"2026-10-08T00:33:31","modified_gmt":"2026-10-07T22:33:31","slug":"mars_radar_pioneers_3d_views_of_planets","status":"publish","type":"post","link":"https:\/\/kids.esa.int\/da\/mars_radar_pioneers_3d_views_of_planets\/","title":{"rendered":"Mars-radar baner vejen for 3D-billeder af planeter"},"content":{"rendered":"<div class=\"lede\">\n<p>Superman kunne m\u00e5ske se gennem v\u00e6gge med sit r\u00f8ntgensyn, men europ\u00e6iske forskere har udviklet en endnu mere bem\u00e6rkelsesv\u00e6rdig evne. Med MARSIS-radarsonden ombord p\u00e5 ESA\u2019s Mars Express-rumsonde kan de se gennem flere kilometer fast is eller klippe.<\/p>\n<\/div>\n<p>Indtil for nylig var det kun muligt at udforske en planets overflade. Den eneste m\u00e5de at indhente oplysninger om forholdene under jorden p\u00e5 var at lande p\u00e5 overfladen og begynde at grave eller bore. Men s\u00e5danne metoder kunne kun n\u00e5 ned til en dybde p\u00e5 m\u00e5ske en halv meter og var kun anvendelige p\u00e5 \u00e9t enkelt sted p\u00e5 hele planeten.<\/p>\n<p>MARSIS, den f\u00f8rste radarsonde, der har kredset om en anden planet, har vist, at det er muligt at se ned under overfladen p\u00e5 en hel planet fra kredsl\u00f8b. Nu, hvor MARSIS-teamet har f\u00e5et en bedre forst\u00e5else af, hvad en radarsonde kan udrette, begynder det at overveje at udforske andre objekter i solsystemet.<\/p>\n<figure class=\"wp-block-image size-natural\" data-width=\"400\" data-credit=\"Jason Craig\/JPL\" data-detail-url=\"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2008\/04\/Radar_sounding_is_opening_up_a_planet_s_third_dimension2\" 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\/2008\/04\/radar_sounding_is_opening_up_a_planet_s_third_dimension2\/17893129-2-eng-GB\/Radar_sounding_is_opening_up_a_planet_s_third_dimension.jpg\" alt=\"Radar sounding is opening up a planet\u2019s third dimension\"><figcaption>Radarm\u00e5linger afsl\u00f8rer en planets tredje dimension<\/figcaption><\/figure>\n<p>Jupiters m\u00e5ne, Europa, er et sted, hvor et eksperiment af MARSIS-typen kunne f\u00f8re til sp\u00e6ndende opdagelser. Man mener, at Europa har et hav (med liv?) under sin tykke, isbelagte skorpe. Radar kunne ogs\u00e5 m\u00e5le dybden af kulbrintes\u00f8erne p\u00e5 Saturns m\u00e5ne, Titan. Den kunne ligeledes unders\u00f8ge de kraftige gejsere, der spr\u00f8jter ud i rummet fra Enceladus, en anden af Saturns m\u00e5ner.<\/p>\n<p>Asteroiders og kometers indre kan kortl\u00e6gges grundigt ved hj\u00e6lp af en radarsonde. Her p\u00e5 Jorden kan MARSIS-teknikken v\u00e6re af uvurderlig betydning for unders\u00f8gelsen af Antarktis\u2019 iskapper. For f\u00f8rste gang er der mulighed for tredimensionelle unders\u00f8gelser af planeter og m\u00e5ner \u2013 takket v\u00e6re radarens evne til at se igennem.<\/p>\n<figure class=\"wp-block-image size-natural\" data-width=\"400\" data-credit=\"ESA (Animation by AOES Medialab)\" data-detail-url=\"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2005\/11\/MARSIS_sending_signals_and_receiving_echoes2\" 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\/2005\/11\/marsis_sending_signals_and_receiving_echoes2\/17890983-2-eng-GB\/MARSIS_sending_signals_and_receiving_echoes.jpg\" alt=\"MARSIS sending signals and receiving echoes\"><figcaption>MARSIS sender signaler og modtager ekkoer<\/figcaption><\/figure>","protected":false},"excerpt":{"rendered":"<p>Superman may have been able to see through walls with his X-ray vision, but European scientists have developed an even more remarkable ability. With the MARSIS radar sounder on ESA\u2019s [&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\/2008\/04\/marsis_fully_deployed2\/17875888-2-eng-GB\/MARSIS_fully_deployed.jpg","esa_banner_description":"MARSIS fully deployed","esa_banner_credit":"ESA","esa_banner_licence":"ESA Standard Licence","esa_banner_detail_url":"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2008\/04\/MARSIS_fully_deployed2","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":[10,11,12],"tags":[],"panel":[],"language":[],"age":[],"duration":[],"resource_type":[],"audience":[],"wf_post_folders":[],"class_list":["post-898","post","type-post","status-publish","format-standard","hentry","category-learn","category-our-universe","category-planets-and-moons"],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/posts\/898","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=898"}],"version-history":[{"count":5,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/posts\/898\/revisions"}],"predecessor-version":[{"id":4728,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/posts\/898\/revisions\/4728"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/media?parent=898"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/categories?post=898"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/tags?post=898"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/panel?post=898"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/language?post=898"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/age?post=898"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/duration?post=898"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/resource_type?post=898"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/audience?post=898"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/wf_post_folders?post=898"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}