{"id":849,"date":"2010-02-25T13:30:00","date_gmt":"2010-02-25T12:30:00","guid":{"rendered":"https:\/\/kids.esa.int\/mars_express_and_the_mystery_of_phobos\/"},"modified":"2026-10-08T00:32:58","modified_gmt":"2026-10-07T22:32:58","slug":"mars_express_and_the_mystery_of_phobos","status":"publish","type":"post","link":"https:\/\/kids.esa.int\/nb\/mars_express_and_the_mystery_of_phobos\/","title":{"rendered":"Mars Express og mysteriet rundt Phobos"},"content":{"rendered":"

ESAs romsonde \u00abMars Express\u00bb har sendt tilbake bemerkelsesverdige bilder og andre data siden den n\u00e5dde den r\u00f8de planeten i desember 2003. Selv om Mars er hovedm\u00e5let, f\u00f8rer romsondens polare bane den av og til n\u00e6r Phobos, den st\u00f8rste av planetens to m\u00e5ner. Under den siste serien med forbiflyvninger, mellom 16. februar og 26. mars, vil Mars Express sette en ny rekord ved \u00e5 passere s\u00e5 n\u00e6r som 50 km fra overflaten den 3. mars. Dataene som samles inn under disse n\u00e6re forbiflyvningene kan bidra til \u00e5 l\u00f8se noen av mysteriene rundt den spennende lille m\u00e5nen.<\/p>\n

\"Mars
Mars Express<\/figcaption><\/figure>\n

Bilder sendt tilbake fra Mars Express og andre romfart\u00f8yer viser at Phobos er en forsl\u00e5tt, potetformet stein med en diameter p\u00e5 under 28 km. Den f\u00f8lger en nesten sirkul\u00e6r bane langs ekvator, omtrent 6000 km over planetens overflate. For \u00e5 unng\u00e5 \u00e5 kollidere med Mars m\u00e5 den bevege seg sv\u00e6rt raskt rundt i sin bane. Hver oml\u00f8psbane varer 7 timer og 39 minutter, s\u00e5 en person som st\u00e5r p\u00e5 planeten, vil se Phobos krysse himmelen fra vest til \u00f8st tre ganger om dagen.<\/p>\n

De fleste forskere mener at denne lille romsteinen er en asteroide som kom for n\u00e6r Mars og ble fanget av planetens tyngdekraft. Det er imidlertid sv\u00e6rt vanskelig \u00e5 forklare hvordan Phobos n\u00e5dde sin n\u00e5v\u00e6rende bane. De fleste innfangede m\u00e5ner f\u00f8lger sv\u00e6rt elliptiske (eggformede) baner langt fra planeten sin. Mars Express kan bidra til \u00e5 l\u00f8se dette mysteriet. Ved \u00e5 studere hvordan tyngdekraften til Phobos trekker i romfart\u00f8yet og endrer dets bane, vil forskerne l\u00e6re mer om m\u00e5nens indre. Tidligere data har antydet at Phobos kan v\u00e6re en por\u00f8s steinhaug med mange tomrom.<\/p>","protected":false},"excerpt":{"rendered":"

ESA\u2019s Mars Express orbiter has been sending back remarkable images and other data since it reached the Red Planet in December 2003. Although Mars is its primary target, the spacecraft\u2019s […]<\/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\/2009\/12\/phobos_up_close2\/17873150-2-eng-GB\/Phobos_up_close.jpg","esa_banner_description":"Phobos up close","esa_banner_credit":"ESA\/DLR\/FU Berlin (G. Neukum)","esa_banner_licence":"ESA Standard Licence","esa_banner_detail_url":"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2009\/12\/Phobos_up_close2","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":[10,65,40],"tags":[],"panel":[],"language":[],"age":[],"duration":[],"resource_type":[],"audience":[],"wf_post_folders":[],"class_list":["post-849","post","type-post","status-publish","format-standard","hentry","category-learn","category-mission-control","category-technology"],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/posts\/849","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/comments?post=849"}],"version-history":[{"count":4,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/posts\/849\/revisions"}],"predecessor-version":[{"id":4706,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/posts\/849\/revisions\/4706"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/media?parent=849"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/categories?post=849"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/tags?post=849"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/panel?post=849"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/language?post=849"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/age?post=849"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/duration?post=849"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/resource_type?post=849"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/audience?post=849"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/wf_post_folders?post=849"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}