{"id":923,"date":"2004-11-16T10:04:00","date_gmt":"2004-11-16T09:04:00","guid":{"rendered":"https:\/\/kids.esa.int\/exploring_asteroids\/"},"modified":"2026-10-08T00:33:49","modified_gmt":"2026-10-07T22:33:49","slug":"exploring_asteroids","status":"publish","type":"post","link":"https:\/\/kids.esa.int\/nb\/exploring_asteroids\/","title":{"rendered":"Utforsking av asteroider"},"content":{"rendered":"
\n

De fleste asteroider er s\u00e5 sm\u00e5 og ligger s\u00e5 langt unna at vi bare kan se dem som bittesm\u00e5 lyspunkter. De oppdages ved at de beveger seg foran de \u2018faste stjernene\u2019 p\u00e5 nattehimmelen. Vi l\u00e6rer mer om dem ved \u00e5 bruke store teleskoper til \u00e5 studere lyset de reflekterer.<\/p>\n<\/div>\n

Men selv Hubble-romteleskopet klarer ikke \u00e5 avsl\u00f8re s\u00e6rlig mye om dem. En av de mest interessante asteroidene er den metallrike Vesta. Bildene fra Hubble viser en ganske rund himmellegeme med et stort nedslagskrater.<\/p>\n

Noen asteroider som passerer tett forbi Jorden, har blitt unders\u00f8kt med radar. Radarekkene fanges opp av store radioteleskoper og brukes til \u00e5 fastsl\u00e5 deres form og st\u00f8rrelse.<\/p>\n

Noen f\u00e5 asteroider har blitt unders\u00f8kt n\u00e6rmere av romfart\u00f8y som har bes\u00f8kt dem. Bildene viser objekter med mange kratere, noe som tyder p\u00e5 at de har blitt utsatt for kollisjoner gjennom milliarder av \u00e5r. I 2000 ble NEAR Shoemaker det f\u00f8rste romfart\u00f8yet som gikk inn i bane rundt en asteroide. Romfart\u00f8yet avsluttet sin levetid med en historisk landing p\u00e5 Eros, en av de st\u00f8rste asteroider i n\u00e6rheten av Jorden.<\/p>\n

ESAs romfart\u00f8y Rosetta har ogs\u00e5 fl\u00f8yet forbi to asteroider i hovedbeltet \u2013 Steins og Lutetia \u2013 p\u00e5 vei mot en komet. Med en diameter p\u00e5 rundt 130 km var Lutetia den st\u00f8rste asteroiden som hittil har blitt bes\u00f8kt av et romfart\u00f8y. ESA unders\u00f8ker ogs\u00e5 metoder for \u00e5 avlede en asteroide som er p\u00e5 vei mot Jorden.<\/p>","protected":false},"excerpt":{"rendered":"

Most asteroids are so small and so far away that we can only see them as tiny points of light. They are found through their movement in front of the […]<\/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\/2003\/04\/asteroids_come_in_many_shapes_and_sizes2\/17886580-2-eng-GB\/Asteroids_come_in_many_shapes_and_sizes.jpg","esa_banner_description":"Asteroids come in many shapes and sizes","esa_banner_credit":"courtesy Observatoire de Paris","esa_banner_licence":"ESA Standard Licence","esa_banner_detail_url":"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2003\/04\/Asteroids_come_in_many_shapes_and_sizes2","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":[46,10,11],"tags":[2],"panel":[],"language":[],"age":[],"duration":[],"resource_type":[],"audience":[],"wf_post_folders":[],"class_list":["post-923","post","type-post","status-publish","format-standard","hentry","category-comets-and-meteors","category-learn","category-our-universe","tag-background-article"],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/posts\/923","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=923"}],"version-history":[{"count":1,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/posts\/923\/revisions"}],"predecessor-version":[{"id":2066,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/posts\/923\/revisions\/2066"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/media?parent=923"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/categories?post=923"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/tags?post=923"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/panel?post=923"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/language?post=923"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/age?post=923"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/duration?post=923"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/resource_type?post=923"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/audience?post=923"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/wf_post_folders?post=923"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}