{"id":1131,"date":"2004-11-16T08:19:00","date_gmt":"2004-11-16T07:19:00","guid":{"rendered":"https:\/\/kids.esa.int\/mars_valleys_and_volcanoes\/"},"modified":"2026-10-08T00:36:21","modified_gmt":"2026-10-07T22:36:21","slug":"mars_valleys_and_volcanoes","status":"publish","type":"post","link":"https:\/\/kids.esa.int\/fi\/mars_valleys_and_volcanoes\/","title":{"rendered":"Marsin laaksot ja tulivuoret"},"content":{"rendered":"
\n

ESA:n Mars Expressin kaltaisten avaruusluotainten l\u00e4hett\u00e4m\u00e4t kuvat osoittavat, ett\u00e4 Marsissa on paljon suuria t\u00f6rm\u00e4yskraattereita. Suurin osa niist\u00e4 sijaitsee p\u00e4iv\u00e4ntasaajan etel\u00e4puolella. Ne n\u00e4ytt\u00e4v\u00e4t syntyneen, kun meteoriitit t\u00f6rm\u00e4siv\u00e4t pinnalle miljardeja vuosia sitten. Suurin kraatteri on halkaisijaltaan noin 1 800 km \u2013 tarpeeksi suuri nielaisemaan puolet Euroopasta.<\/p>\n<\/div>\n

Marsin pinta on kuitenkin muuttunut planeetan olemassaolon aikana. Yksi silmiinpist\u00e4v\u00e4 piirre on valtava laaksoj\u00e4rjestelm\u00e4 \u2013 Valles Marineris \u2013 planeetan p\u00e4iv\u00e4ntasaajan l\u00e4heisyydess\u00e4. Noin 5 000 km pitk\u00e4n\u00e4 se ulottuisi Pariisista New Yorkiin asti.<\/p>\n

\"Perspective
Perspektiivikuva Melas Chasman kerrostumista<\/figcaption><\/figure>\n

Laaksot n\u00e4ytt\u00e4v\u00e4t muodostuneen planeetan pinnan halkeilun seurauksena, kun kivinen kuori venyi ja repeytyi auki. Laaksot ovat nyky\u00e4\u00e4n niin leveit\u00e4, ett\u00e4 niiden reunalla seisova ihminen ei n\u00e4e toiselle puolelle.<\/p>\n

\"\"<\/figure>\n

L\u00e4nteen p\u00e4in, l\u00e4hist\u00f6ll\u00e4, sijaitsee viisi valtavaa tulivuorta. Niist\u00e4 vaikuttavin on Olympus Mons, aurinkokunnan suurin tulivuori. Se on leve\u00e4mpi kuin Englanti ja kolme kertaa korkeampi kuin Mount Everest, maapallon korkein vuori. Mik\u00e4\u00e4n n\u00e4ist\u00e4 tulivuorista ei ole t\u00e4ll\u00e4 hetkell\u00e4 aktiivinen.<\/p>","protected":false},"excerpt":{"rendered":"

Pictures sent back by spacecraft such as ESA’s Mars Express show that Mars has many large impact craters. Most of these are to the south of the equator. They seem […]<\/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\/2004\/11\/crater_hale_in_argyre_basin3\/17910048-2-eng-GB\/Crater_Hale_in_Argyre_basin.jpe","esa_banner_description":"Crater Hale in Argyre basin","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\/2004\/11\/Crater_Hale_in_Argyre_basin3","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":[2],"panel":[],"language":[],"age":[],"duration":[],"resource_type":[],"audience":[],"wf_post_folders":[],"class_list":["post-1131","post","type-post","status-publish","format-standard","hentry","category-learn","category-our-universe","category-planets-and-moons","tag-background-article"],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/posts\/1131","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/comments?post=1131"}],"version-history":[{"count":5,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/posts\/1131\/revisions"}],"predecessor-version":[{"id":4864,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/posts\/1131\/revisions\/4864"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/media?parent=1131"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/categories?post=1131"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/tags?post=1131"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/panel?post=1131"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/language?post=1131"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/age?post=1131"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/duration?post=1131"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/resource_type?post=1131"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/audience?post=1131"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/wf_post_folders?post=1131"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}