{"id":964,"date":"2004-11-15T15:56:00","date_gmt":"2004-11-15T14:56:00","guid":{"rendered":"https:\/\/kids.esa.int\/mars_-_the_red_planet\/"},"modified":"2026-10-08T00:34:17","modified_gmt":"2026-10-07T22:34:17","slug":"mars_-_the_red_planet","status":"publish","type":"post","link":"https:\/\/kids.esa.int\/fi\/mars_-_the_red_planet\/","title":{"rendered":"Mars \u2013 punainen planeetta"},"content":{"rendered":"
\n

Marsi kutsutaan usein \u2018Punaiseksi planeetaksi\u2019, koska se n\u00e4kyy taivaalla oranssinpunaisena t\u00e4hden\u00e4. T\u00e4m\u00e4n v\u00e4rin vuoksi muinaiset kreikkalaiset ja roomalaiset nimesiv\u00e4t sen sotajumalansa mukaan. Nyky\u00e4\u00e4n tied\u00e4mme avaruusluotainten ansiosta, ett\u00e4 planeetan ulkon\u00e4k\u00f6 johtuu marsilaisissa kivilajeissa olevasta ruosteesta.<\/p>\n<\/div>\n

Mars on nelj\u00e4s planeetta Auringosta laskien. Se kiert\u00e4\u00e4 Aurinkoa keskim\u00e4\u00e4rin 228 miljoonan kilometrin et\u00e4isyydell\u00e4, mik\u00e4 on puolet enemm\u00e4n kuin Maan et\u00e4isyys, joten ihmisvierailijoille siell\u00e4 olisi eritt\u00e4in kylm\u00e4. Vaikka kes\u00e4t p\u00e4iv\u00e4ntasaajan l\u00e4heisyydess\u00e4 voivat olla melko l\u00e4mpimi\u00e4, keskil\u00e4mp\u00f6tila on 63 astetta pakkasta \u2013 samanlainen kuin talvet Antarktikalla. My\u00f6s y\u00f6t ovat purevan kylmi\u00e4.<\/p>\n

Marsin ensimm\u00e4isill\u00e4 asukkailla on edess\u00e4\u00e4n muita haasteita. Ilma on siell\u00e4 100 kertaa ohuempaa kuin Maassa, ja se koostuu p\u00e4\u00e4asiassa hiilidioksidista. Tutkijoiden on k\u00e4ytett\u00e4v\u00e4 happinaamareita ja erityisi\u00e4 suojapukuja aina, kun he astuvat ulos suljetuista asunnoistaan.<\/p>\n

Voimakkaat myrskyt voivat nostaa ilmaan p\u00f6lypilvi\u00e4. Toisinaan n\u00e4m\u00e4 levi\u00e4v\u00e4t nopeasti ymp\u00e4ri koko planeettaa ja peitt\u00e4v\u00e4t pinnan n\u00e4kyvist\u00e4.<\/p>","protected":false},"excerpt":{"rendered":"

Mars is often called the ‘Red Planet’ because it appears in the sky as an orange-red star. The colour caused the ancient Greeks and Romans to name it after their […]<\/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\/08\/hubble_s_close_encounter_with_mars2\/17867008-3-eng-GB\/Hubble_s_close_encounter_with_Mars.jpg","esa_banner_description":"","esa_banner_credit":"NASA\/ESA, J. Bell (Cornell U.) and M. Wolff (SSI)","esa_banner_licence":"ESA Standard Licence","esa_banner_detail_url":"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2003\/08\/Hubble_s_close_encounter_with_Mars2","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":[62,10,13,11,12],"tags":[2],"panel":[],"language":[],"age":[],"duration":[],"resource_type":[],"audience":[],"wf_post_folders":[],"class_list":["post-964","post","type-post","status-publish","format-standard","hentry","category-exploration","category-learn","category-life-in-space","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\/964","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=964"}],"version-history":[{"count":1,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/posts\/964\/revisions"}],"predecessor-version":[{"id":2107,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/posts\/964\/revisions\/2107"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/media?parent=964"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/categories?post=964"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/tags?post=964"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/panel?post=964"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/language?post=964"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/age?post=964"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/duration?post=964"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/resource_type?post=964"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/audience?post=964"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/wf_post_folders?post=964"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}