{"id":1133,"date":"2004-11-16T08:14:00","date_gmt":"2004-11-16T07:14:00","guid":{"rendered":"https:\/\/kids.esa.int\/planets_and_moons_life_on_earth\/"},"modified":"2026-10-08T00:36:23","modified_gmt":"2026-10-07T22:36:23","slug":"planets_and_moons_life_on_earth","status":"publish","type":"post","link":"https:\/\/kids.esa.int\/et\/planets_and_moons_life_on_earth\/","title":{"rendered":"Elu Maal"},"content":{"rendered":"<div class=\"lede\">\n<p>Iidsetes kivimites leiduvate fossiilide uuringud n\u00e4itavad, et elu sai t\u00f5en\u00e4oliselt alguse umbes 4 miljardit aastat tagasi, kui Maa oli veel v\u00e4ga noor. Keegi ei tea, kuidas elu Maal alguse sai. Enamik teadlasi arvab, et see sai alguse vedelas vees. Aga kas see toimus pinnal asuvates veekogudes, maa all v\u00f5i ookeanide p\u00f5hjas, kus vulkaaniline tegevus tekitab kuumaveeallikaid?<\/p>\n<\/div>\n<p>Katsed n\u00e4itavad, et elu keemilised ehituskivid v\u00f5ivad tekkida nii kosmoses kui ka Maal. Paljud neist on ilmselt j\u00f5udnud Maale langevate meteoriitide ja komeetidega. Mingil viisil \u00fchinesid need lihtsad \u2018orgaanilised\u2019 \u00fchendid, moodustades keerukamaid molekule. Seej\u00e4rel hakkasid need end paljundama ja kasvama.<\/p>\n<figure class=\"wp-block-image size-natural\" data-width=\"264\" data-credit=\"ESA\" data-detail-url=\"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2004\/09\/Dry_earth3\" data-licence=\"ESA Standard Licence\" data-licence-url=\"https:\/\/www.esa.int\/ESA_Multimedia\/Terms_and_conditions_of_use_of_images_and_videos_available_on_the_esa_website\"><img decoding=\"async\" loading=\"lazy\" style=\"max-width:100%;height:auto\" src=\"https:\/\/www.esa.int\/var\/esa\/storage\/images\/esa_multimedia\/images\/2004\/09\/dry_earth3\/17868598-2-eng-GB\/Dry_earth.jpeg\" alt=\"Dry earth\"><figcaption>Kuiv muld<\/figcaption><\/figure>\n<p>Teame seda, et kui elu kord juba algab, on see uskumatult karm. Elusbakterid on leitud k\u00fclmunud Antarktikast, keevas vees ja kuni viie kilomeetri s\u00fcgavusel maap\u00f5ues asuvates kivimites. Teame ka, et sellised organismid suudavad aastaid ellu j\u00e4\u00e4da kosmoses valitsevates karmides tingimustes.<\/p>\n<p>Kui taimed laialdaselt levima hakkasid, vabanes \u00f5hku suuri koguseid hapnikku. Maast sai meie P\u00e4ikeses\u00fcsteemis ainus planeet, mille atmosf\u00e4\u00e4r on hapnikurikas. Otsides hapnikku teistel planeetidel, v\u00f5ime \u00fchel p\u00e4eval leida t\u00f5endeid v\u00e4lismaalase elu olemasolust.<\/p>","protected":false},"excerpt":{"rendered":"<p>Studies of fossils in ancient rocks tell us that life probably began about 4 billion years ago, when the Earth was very young. No one knows how life began on [&hellip;]<\/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\/05\/dna_s_famous_double-helix_structure3\/17902899-2-eng-GB\/DNA_s_famous_double-helix_structure.jpg","esa_banner_description":"DNA's famous double-helix structure","esa_banner_credit":"ESA 2003. Illustration by Medialab.","esa_banner_licence":"ESA Standard Licence","esa_banner_detail_url":"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2003\/05\/DNA_s_famous_double-helix_structure3","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-1133","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\/et\/wp-json\/wp\/v2\/posts\/1133","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/kids.esa.int\/et\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/kids.esa.int\/et\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/et\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/et\/wp-json\/wp\/v2\/comments?post=1133"}],"version-history":[{"count":5,"href":"https:\/\/kids.esa.int\/et\/wp-json\/wp\/v2\/posts\/1133\/revisions"}],"predecessor-version":[{"id":4865,"href":"https:\/\/kids.esa.int\/et\/wp-json\/wp\/v2\/posts\/1133\/revisions\/4865"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/et\/wp-json\/wp\/v2\/media?parent=1133"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/et\/wp-json\/wp\/v2\/categories?post=1133"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/et\/wp-json\/wp\/v2\/tags?post=1133"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/et\/wp-json\/wp\/v2\/panel?post=1133"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/et\/wp-json\/wp\/v2\/language?post=1133"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/et\/wp-json\/wp\/v2\/age?post=1133"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/et\/wp-json\/wp\/v2\/duration?post=1133"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/et\/wp-json\/wp\/v2\/resource_type?post=1133"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/et\/wp-json\/wp\/v2\/audience?post=1133"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/et\/wp-json\/wp\/v2\/wf_post_folders?post=1133"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}