{"id":1031,"date":"2005-05-02T12:13:00","date_gmt":"2005-05-02T10:13:00","guid":{"rendered":"https:\/\/kids.esa.int\/radar_to_reveal_hidden_mars\/"},"modified":"2026-10-08T00:35:05","modified_gmt":"2026-10-07T22:35:05","slug":"radar_to_reveal_hidden_mars","status":"publish","type":"post","link":"https:\/\/kids.esa.int\/sv\/radar_to_reveal_hidden_mars\/","title":{"rendered":"Radar ska avsl\u00f6ja det dolda p\u00e5 Mars"},"content":{"rendered":"
\n

Ett nytt kapitel i utforskningen av Mars st\u00e5r i begrepp att inledas. Efter en l\u00e5ng f\u00f6rdr\u00f6jning \u00e4r MARSIS-radarinstrumentet ombord p\u00e5 ESA:s rymdsond Mars Express nu p\u00e5 v\u00e4g att tas i bruk.<\/p>\n<\/div>\n

MARSIS \u00e4r det f\u00f6rsta instrumentet som har utformats f\u00f6r att unders\u00f6ka vad som finns under Mars orange-r\u00f6da yta. Det fungerar genom att s\u00e4nda ut l\u00e5gfrekventa radiosignaler.<\/p>\n

M\u00e5nga av dessa studsar direkt tillbaka fr\u00e5n ytan. Men vissa signaler tr\u00e4nger igenom marken och studsar tillbaka fr\u00e5n lager under ytan.<\/p>\n

Genom att analysera dessa ekon hoppas forskarna kunna uppt\u00e4cka is eller vatten under jordytan. Detta \u00e4r viktigt, eftersom liv oftast \u00e4r kopplat till f\u00f6rekomsten av vatten.<\/p>\n

MARSIS kommer \u00e4ven att kartl\u00e4gga bergarter i lager ner till ett djup p\u00e5 flera kilometer och m\u00e4ta h\u00f6jden p\u00e5 berg och dalar.<\/p>\n

\"MARSIS
MARSIS huvudantenn<\/figcaption><\/figure>\n

Innan detta kan ske m\u00e5ste radarens tre stavliknande utstr\u00e4ckningsarmar f\u00e4llas ut. Dessa skulle ha f\u00e4llts ut i april 2004, men det fanns en viss oro f\u00f6r att de skulle kunna fastna eller studsa tillbaka och skada rymdfarkosten.<\/p>\n

\u201cS\u00e5dana utplaceringar g\u00e5r inte att demonstrera p\u00e5 jorden\u201d, f\u00f6rklarade John Reddy fr\u00e5n ESA. \u201cD\u00e4rf\u00f6r m\u00e5ste vi f\u00f6rlita oss p\u00e5 datorsimuleringar, s\u00e5vida de inte kan testas i rymden.\u201d<\/p>\n

Efter en noggrann analys av riskerna har ESA beslutat att genomf\u00f6ra experimentet. De tv\u00e5 20 meter l\u00e5nga utstr\u00e4ckningsarmarna kommer att s\u00e4ttas ut f\u00f6rst, f\u00f6ljda av den 7 meter l\u00e5nga utstr\u00e4ckningsarmen n\u00e5gra dagar senare. Detta f\u00f6rv\u00e4ntas \u00e4ga rum mellan den 2 och 12 maj.<\/p>\n

N\u00e4r installationen \u00e4r klar kommer MARSIS att genomg\u00e5 tre veckors testning. D\u00e4refter inleds den sp\u00e4nnande radars\u00f6kningen.<\/p>","protected":false},"excerpt":{"rendered":"

A new chapter in the exploration of Mars is about to begin. After a long delay, the MARSIS radar instrument on board ESA\u2019s Mars Express orbiter is about to swing […]<\/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\/2001\/08\/marsis_prospecting_for_water2\/17863678-3-eng-GB\/MARSIS_prospecting_for_water.jpg","esa_banner_description":"MARSIS prospecting for water","esa_banner_credit":"ESA","esa_banner_licence":"ESA Standard Licence","esa_banner_detail_url":"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2001\/08\/MARSIS_prospecting_for_water2","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-1031","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\/sv\/wp-json\/wp\/v2\/posts\/1031","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=1031"}],"version-history":[{"count":4,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/posts\/1031\/revisions"}],"predecessor-version":[{"id":4806,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/posts\/1031\/revisions\/4806"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/media?parent=1031"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/categories?post=1031"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/tags?post=1031"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/panel?post=1031"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/language?post=1031"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/age?post=1031"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/duration?post=1031"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/resource_type?post=1031"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/audience?post=1031"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/wf_post_folders?post=1031"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}