{"id":1142,"date":"2004-11-19T08:27:00","date_gmt":"2004-11-19T07:27:00","guid":{"rendered":"https:\/\/kids.esa.int\/are_we_alone_life_on_earth\/"},"modified":"2026-10-08T00:36:29","modified_gmt":"2026-10-07T22:36:29","slug":"are_we_alone_life_on_earth","status":"publish","type":"post","link":"https:\/\/kids.esa.int\/hu\/are_we_alone_life_on_earth\/","title":{"rendered":"Az \u00e9let a F\u00f6ld\u00f6n"},"content":{"rendered":"
\n

Senki sem tudja, hogyan vagy mi\u00e9rt keletkezett az \u00e9let. Azt viszont tudjuk, hogy a F\u00f6ld\u00f6n az \u00e9let legal\u00e1bb 3,8 milli\u00e1rd (3 800 000 000) \u00e9vvel ezel\u0151tt kezd\u0151d\u00f6tt. Ekkorra a fiatal bolyg\u00f3 m\u00e1r leh\u0171lt, \u00e9s kialakult a szikl\u00e1s k\u00e9reg. Egyes tud\u00f3sok \u00fagy v\u00e9lik, hogy az \u00e9let egy szikl\u00e1s t\u00f3ban vagy az \u00f3ce\u00e1nban keletkezett. M\u00e1sok szerint az \u00e9let az \u0171rb\u0151l \u00e9rkezett, \u00fcst\u00f6k\u00f6s\u00f6kkel \u00e9s aszteroid\u00e1kkal.<\/p>\n<\/div>\n

Tudom\u00e1sunk szerint a F\u00f6ld az egyetlen hely, ahol \u00e9let tal\u00e1lhat\u00f3. Bolyg\u00f3nk b\u00e1rmely pontj\u00e1n, ahov\u00e1 csak tekint\u00fcnk, bakt\u00e9riumok \u00e9s m\u00e1s egyszer\u0171 \u00e9letform\u00e1k tal\u00e1ltak maguknak otthont.<\/p>\n

A n\u00f6v\u00e9nyeknek \u00e9s az \u00e1llatoknak a n\u00f6veked\u00e9shez napf\u00e9nyre van sz\u00fcks\u00e9g\u00fck. Az 1970-es \u00e9vekig a tud\u00f3sok azt hitt\u00e9k, hogy az \u00e9let csak a F\u00f6ld felsz\u00edn\u00e9nek k\u00f6zel\u00e9ben l\u00e9tezik.<\/p>\n

\"Mars
A Mars 5,5 milli\u00f3 km-r\u0151l, december 1-j\u00e9n k\u00e9sz\u00fclt felv\u00e9tel<\/figcaption><\/figure>\n

Az\u00f3ta bakt\u00e9riumokat fedeztek fel t\u00f6bb kilom\u00e9terrel a f\u00f6ld alatt, szil\u00e1rd k\u0151zet belsej\u00e9ben. Ezek a k\u0151zetben tal\u00e1lhat\u00f3 g\u00e1zokb\u00f3l \u00e9s \u00e1sv\u00e1nyi anyagokb\u00f3l t\u00e1pl\u00e1lkoznak. Bakt\u00e9riumokat tal\u00e1ltak er\u0151s savakban, az Antarktisz fagyos hideg\u00e9ben, valamint az \u00f3ce\u00e1n s\u00f6t\u00e9t m\u00e9lyeiben tal\u00e1lhat\u00f3 forr\u00f3 forr\u00e1sok k\u00f6zel\u00e9ben is. N\u00e9h\u00e1nyuk m\u00e9g er\u0151sen radioakt\u00edv helyeken is k\u00e9pes t\u00fal\u00e9lni. Am\u00edg v\u00edz \u00e1ll rendelkez\u00e9sre, az \u00e9let meg tudja vetni a l\u00e1b\u00e1t.<\/p>\n

Ha az \u00e9let ennyire neh\u00e9z, vajon kialakulhat-e \u00e9s fennmaradhat-e m\u00e1s bolyg\u00f3kon is? Naprendszer\u00fcnkben a legval\u00f3sz\u00edn\u0171bb hely erre a Mars.<\/p>","protected":false},"excerpt":{"rendered":"

No one knows how or why life began. We do know that life on Earth started at least 3.8 billion (3 800 000 000) years ago. By this time, 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\/2001\/07\/life_in_extreme_conditions_on_earth_raises_hopes_for_life_elsewhere_in_the_universe2\/17864454-3-eng-GB\/Life_in_extreme_conditions_on_Earth_raises_hopes_for_life_elsewhere_in_the_universe.jpg","esa_banner_description":"","esa_banner_credit":"ESA","esa_banner_licence":"ESA Standard Licence","esa_banner_detail_url":"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2001\/07\/Life_in_extreme_conditions_on_Earth_raises_hopes_for_life_elsewhere_in_the_universe2","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":[14,10,13],"tags":[2],"panel":[],"language":[],"age":[],"duration":[],"resource_type":[],"audience":[],"wf_post_folders":[],"class_list":["post-1142","post","type-post","status-publish","format-standard","hentry","category-are-we-alone","category-learn","category-life-in-space","tag-background-article"],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/kids.esa.int\/hu\/wp-json\/wp\/v2\/posts\/1142","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/kids.esa.int\/hu\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/kids.esa.int\/hu\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/hu\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/hu\/wp-json\/wp\/v2\/comments?post=1142"}],"version-history":[{"count":4,"href":"https:\/\/kids.esa.int\/hu\/wp-json\/wp\/v2\/posts\/1142\/revisions"}],"predecessor-version":[{"id":4868,"href":"https:\/\/kids.esa.int\/hu\/wp-json\/wp\/v2\/posts\/1142\/revisions\/4868"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/hu\/wp-json\/wp\/v2\/media?parent=1142"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/hu\/wp-json\/wp\/v2\/categories?post=1142"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/hu\/wp-json\/wp\/v2\/tags?post=1142"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/hu\/wp-json\/wp\/v2\/panel?post=1142"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/hu\/wp-json\/wp\/v2\/language?post=1142"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/hu\/wp-json\/wp\/v2\/age?post=1142"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/hu\/wp-json\/wp\/v2\/duration?post=1142"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/hu\/wp-json\/wp\/v2\/resource_type?post=1142"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/hu\/wp-json\/wp\/v2\/audience?post=1142"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/hu\/wp-json\/wp\/v2\/wf_post_folders?post=1142"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}