{"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\/nl\/are_we_alone_life_on_earth\/","title":{"rendered":"Het leven op Aarde"},"content":{"rendered":"<div class=\"lede\">\n<p>Niemand weet hoe of waarom het leven op Aarde is ontstaan. Wat we wel weten is dat het leven op onze planeet zo'n 3,8 miljard (3 800 000 000) jaar geleden is begonnen. De nog jonge planeet was toen afgekoeld en rondom had zich een rotsige korstlaag gevormd.<\/p>\n<\/div>\n<p>Sommige wetenschappers geloven dat het leven is ontstaan in water tussen de rotsen of in de oceaan. Anderen denken dat het misschien met kometen en planeto\u00efden is meegekomen uit de ruimte.<\/p>\n<p>Planten en dieren hebben zonlicht nodig om te groeien. Tot in de jaren zeventig dachten wetenschappers dat er alleen leven bestond dicht bij het aardoppervlak.<\/p>\n<figure class=\"wp-block-image size-natural\" data-width=\"400\" data-credit=\"ESA\" data-detail-url=\"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2003\/12\/Mars_from_5.5_million_km_taken_1_December3\" 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\/2003\/12\/mars_from_5.5_million_km_taken_1_december3\/17899273-2-eng-GB\/Mars_from_5.5_million_km_taken_1_December.jpg\" alt=\"Mars from 5.5 million km, taken 1 December\"><figcaption>Mars vanaf 5,5 miljoen km, gefotografeerd op 1 december<\/figcaption><\/figure>\n<p>Maar daarna zijn bacteri\u00ebn kilometers diep in harde rotsgrond aangetroffen. Ze leven daar van gassen en mineralen in de rots. Er zijn ook bacteri\u00ebn gevonden in sterke zuren, in de vrieskou op de Zuidpool, en in de buurt van hete bronnen in de duistere diepte van de oceaan. Sommige zijn zelfs in staat te overleven op plaatsen met veel radioactieve straling. Als er maar water is, kan het leven zich staande houden.<\/p>\n<p>Als het leven zo sterk is, zou het dan buiten onze Aarde ook kans maken? Binnen ons zonnestelsel is de kans daarvoor het grootst op Mars.<\/p>","protected":false},"excerpt":{"rendered":"<p>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 [&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\/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\/nl\/wp-json\/wp\/v2\/posts\/1142","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/kids.esa.int\/nl\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/kids.esa.int\/nl\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/nl\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/nl\/wp-json\/wp\/v2\/comments?post=1142"}],"version-history":[{"count":4,"href":"https:\/\/kids.esa.int\/nl\/wp-json\/wp\/v2\/posts\/1142\/revisions"}],"predecessor-version":[{"id":4868,"href":"https:\/\/kids.esa.int\/nl\/wp-json\/wp\/v2\/posts\/1142\/revisions\/4868"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/nl\/wp-json\/wp\/v2\/media?parent=1142"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/nl\/wp-json\/wp\/v2\/categories?post=1142"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/nl\/wp-json\/wp\/v2\/tags?post=1142"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/nl\/wp-json\/wp\/v2\/panel?post=1142"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/nl\/wp-json\/wp\/v2\/language?post=1142"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/nl\/wp-json\/wp\/v2\/age?post=1142"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/nl\/wp-json\/wp\/v2\/duration?post=1142"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/nl\/wp-json\/wp\/v2\/resource_type?post=1142"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/nl\/wp-json\/wp\/v2\/audience?post=1142"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/nl\/wp-json\/wp\/v2\/wf_post_folders?post=1142"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}