{"id":439,"date":"2017-06-21T12:26:00","date_gmt":"2017-06-21T10:26:00","guid":{"rendered":"https:\/\/kids.esa.int\/evidence_found_that_comets_helped_to_make_earth_s_atmosphere\/"},"modified":"2026-10-08T00:28:13","modified_gmt":"2026-10-07T22:28:13","slug":"evidence_found_that_comets_helped_to_make_earth_s_atmosphere","status":"publish","type":"post","link":"https:\/\/kids.esa.int\/sl\/evidence_found_that_comets_helped_to_make_earth_s_atmosphere\/","title":{"rendered":"Dokazi ka\u017eejo, da so kometi pripomogli k nastanku zemeljske atmosfere!"},"content":{"rendered":"<div class=\"lede\">\n<p>Leta 2016 je sonda Evropske vesoljske agencije (ESA) z imenom Rosetta uspe\u0161no zaklju\u010dila neverjetno misijo: poletela je do kometa, ga preu\u010devala iz orbite in na njegovo povr\u0161ino poslala robotsko sondo! Tako so odkrili dokaze, da so kometi davno nazaj tr\u010dili v Zemljo in prispevali k nastanku na\u0161e atmosfere!<\/p>\n<\/div>\n<p>Da bi pri\u0161li do tega pomembnega odkritja, so morali znanstveniki delovati kot detektivi. Vemo, da zemeljska atmosfera vsebuje majhne koli\u010dine plina, imenovanega ksenon. V na\u0161i atmosferi obstaja veliko vrst ksenona, vsaka pa nastaja na nekoliko druga\u010den na\u010din. To ustvarja nekak\u0161en \u201cprstni odtis\u201d, s pomo\u010djo katerega lahko razlikujemo med razli\u010dnimi me\u0161anicami vrst ksenona.<\/p>\n<figure class=\"wp-block-image size-large\" data-width=\"1843\" data-credit=\"ESA\" data-detail-url=\"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2017\/06\/Comet_67_PChuryumov-Gerasimenko_on_15_May_2016\" 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\" style=\"max-width: 100%; height: auto;\" src=\"https:\/\/www.esa.int\/var\/esa\/storage\/images\/esa_multimedia\/images\/2017\/06\/comet_67_pchuryumov-gerasimenko_on_15_may_2016\/17905867-2-eng-GB\/Comet_67_PChuryumov-Gerasimenko_on_15_May_2016.jpg\" alt=\"A close-up photo of the comet\" \/><figcaption>Fotografija kometa v bli\u017eini<\/figcaption><\/figure>\n<p>Znanstveniki so ksenon odkrili v redki atmosferi Marsa, v asteroidih, na Jupitru in v delcih iz Sonca. Toda ksenon na Zemlji ima druga\u010den \u201cprstni odtis\u201d kot ti! To pomeni, da mora ksenon, ki ga imamo tukaj na Zemlji, izvirati iz drugega vira kot ksenon drugod v Oson\u010dju.<\/p>\n<p>Ksenon na Zemlji je zelo star, s\u010dasoma pa se je njegova sestava spremenila. Znanstveniki so z ra\u010dunalni\u0161kimi modeli napovedali, kak\u0161en bi bil ksenon na Zemlji pred pribli\u017eno \u0161tirimi in pol milijardami let, ko se je na\u0161 planet \u0161ele oblikoval. To nas pripelje nazaj k sondi ESA Rosetta. Ko je preu\u010devala komet, ugibajte, kaj je odkrila? Ksenon s skoraj enakim \u201cprstnim odtisom\u201d kot ksenon na prazgodovinski Zemlji!<\/p>\n<figure class=\"wp-block-image size-large\" data-width=\"1920\" data-credit=\"ESA\" data-detail-url=\"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2017\/06\/Fresh_from_Earth\" 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\" style=\"max-width: 100%; height: auto;\" src=\"https:\/\/www.esa.int\/var\/esa\/storage\/images\/esa_multimedia\/images\/2017\/06\/fresh_from_earth\/17898569-2-eng-GB\/Fresh_from_Earth.jpg\" alt=\"Comets could have helped to make Earth\u2019s atmosphere, billions of years ago\" \/><figcaption>Kometi so morda pred milijardami let prispevali k nastanku zemeljske atmosfere<\/figcaption><\/figure>\n<p>To je trden dokaz, da so v davni preteklosti kometi tr\u010dili v Zemljo in s seboj prinesli ksenon. \u010ceprav je ksenon iz kometov podoben ksenonu na zgodnji Zemlji, pa ni povsem enak. Dejansko dokazi, ki jih je odkrila sonda Rosetta, ka\u017eejo, da so kometi prispevali pribli\u017eno 22% k starodavnemu ksenonu na Zemlji, medtem ko je preostanek verjetno pri\u0161el z asteroidov.<\/p>\n<p>In \u010de so kometi prinesli ksenon, ali bi lahko prinesli tudi kaj drugega? Morda so kometi prinesli aminokisline \u2013 eno od sestavin \u017eivljenja!<\/p>\n<figure class=\"wp-block-image size-large\" data-width=\"1920\" data-credit=\"ESA\" data-detail-url=\"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2017\/06\/Rosetta_goes_on_an_excursion\" 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\" style=\"max-width: 100%; height: auto;\" src=\"https:\/\/www.esa.int\/var\/esa\/storage\/images\/esa_multimedia\/images\/2017\/06\/rosetta_goes_on_an_excursion\/17866860-3-eng-GB\/Rosetta_goes_on_an_excursion.png\" alt=\"Have you seen our cartoons about Rosetta?\" \/><figcaption>Ste \u017ee videli na\u0161e risanke o Rosetti?<\/figcaption><\/figure>\n<p>Zahvaljujo\u010d podatkom, ki jih je poslala sonda Rosetta agencije ESA, se pribli\u017eujemo odgovorom na vsa ta vpra\u0161anja in \u0161e ve\u010d!<\/p>\n<p><b>Zanimiv podatek:<\/b> Uradno ime kometa, ki ga je raziskovala sonda Rosetta, je 67P\/\u010curjumov-Gerasimenko. Sonda Rosetta je letela neverjetno blizu kometa, da bi zbrala ksenon \u2013 le 5 km nad njegovo povr\u0161ino!<\/p>","protected":false},"excerpt":{"rendered":"<p>In 2016, an ESA probe called Rosetta completed an incredible mission: flying to a comet, studying it from orbit, and sending down a robotic lander! They then found evidence that [&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\/2017\/06\/rosetta_at_comet\/17873224-2-eng-GB\/Rosetta_at_Comet.jpg","esa_banner_description":"Rosetta and its lander have made amazing discoveries","esa_banner_credit":"ESA","esa_banner_licence":"ESA Standard Licence","esa_banner_detail_url":"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2017\/06\/Rosetta_at_Comet","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":[26],"tags":[],"panel":[],"language":[],"age":[],"duration":[],"resource_type":[],"audience":[],"wf_post_folders":[],"class_list":["post-439","post","type-post","status-publish","format-standard","hentry","category-news"],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/posts\/439","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/comments?post=439"}],"version-history":[{"count":5,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/posts\/439\/revisions"}],"predecessor-version":[{"id":4475,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/posts\/439\/revisions\/4475"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/media?parent=439"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/categories?post=439"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/tags?post=439"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/panel?post=439"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/language?post=439"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/age?post=439"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/duration?post=439"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/resource_type?post=439"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/audience?post=439"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/wf_post_folders?post=439"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}