{"id":20,"date":"2009-02-04T08:56:00","date_gmt":"2009-02-04T07:56:00","guid":{"rendered":"https:\/\/kids.esa.int\/cheops_exoplanets\/"},"modified":"2026-10-08T00:23:07","modified_gmt":"2026-10-07T22:23:07","slug":"cheops_exoplanets","status":"publish","type":"post","link":"https:\/\/kids.esa.int\/sl\/cheops_exoplanets\/","title":{"rendered":"Eksoplaneti"},"content":{"rendered":"<div class=\"lede\">\n<p>Ta <a href=\"https:\/\/www.esa.int\/kids\/en\/learn\/Our_Universe\/Planets_and_moons\/The_Solar_System_and_its_planets\" target=\"_blank\" rel=\"noopener\">Son\u010dni sistem<\/a> vsebuje osem planetov, ki kro\u017eijo okoli na\u0161e zvezde, <a href=\"https:\/\/www.esa.int\/kids\/en\/learn\/Our_Universe\/The_Sun\/Our_nearest_star\" target=\"_blank\" rel=\"noopener\">Sonce<\/a>. A ste vedeli, da je tam zunaj v vesolju \u0161e veliko, veliko ve\u010d planetov, ki kro\u017eijo okoli <a href=\"https:\/\/www.esa.int\/kids\/en\/learn\/Our_Universe\/Stars_and_galaxies\/Stars\" target=\"_blank\" rel=\"noopener\">zvezde<\/a> ki jih vidimo pono\u010di? Ti se imenujejo zunajson\u010dni planeti ali, skraj\u0161ano, eksoplaneti.<\/p>\n<p>Odkrivanje eksoplanetov je izredno te\u017eko. So tako dale\u010d, da jih ne moremo preprosto opaziti z obi\u010dajnim teleskopom. Poleg tega so v primerjavi z zvezdami, okoli katerih kro\u017eijo, zelo majhni in \u0161ibko svetle\u010di. To pomeni, da morajo astronomi, ki i\u0161\u010dejo eksoplanete, uporabljati nekaj domiselnih tehnik!<\/p>\n<\/div>\n<p>Prva metoda, ki so jo astronomi uporabili za odkrivanje eksoplanetov, se imenuje radialna hitrost, vendar ima preprostej\u0161i vzdevek: \u00bbzibanje zvezde\u00ab! Ko planet kro\u017ei okoli zvezde, se planetova <a href=\"https:\/\/www.esa.int\/kids\/en\/learn\/Our_Universe\/Story_of_the_Universe\/Gravity\" target=\"_blank\" rel=\"noopener\">gravitacija<\/a> vpliva na zvezdo, zaradi \u010desar se nam zdi, kot da se zvezda v vesolju maje. U\u010dinek je sicer majhen, vendar je z uporabo zelo ob\u010dutljivih instrumentov mogo\u010de zaznati nekatere eksoplanete, ki povzro\u010dajo majanje svojih zvezd!<\/p>\n<p>Danes je metoda tranzita bolj pogosta tehnika odkrivanja. Ko eksoplanet preide pred svojo zvezdo, lahko zasen\u010di majhen del zvezdne svetlobe. To imenujemo tranzit. Z na\u0161ega vidika na Zemlji se zvezda med tranzitom zdi nekoliko temnej\u0161a, nato pa spet svetlej\u0161a, ko planet ne zasen\u010di ve\u010d svetlobe. To je namig, da je morda prisoten eksoplanet! Tranzite je te\u017eko zaznati, ker je sprememba v svetlosti tako majhna, vendar posebni teleskopi za iskanje planetov, kot je teleskop ESA-jeve <a href=\"https:\/\/sci.esa.int\/web\/corot\" target=\"_blank\" rel=\"noopener\">CoRoT<\/a> so bili zelo uspe\u0161ni! ESA v letu 2019 <a href=\"https:\/\/sci.esa.int\/web\/cheops\" target=\"_blank\" rel=\"noopener\">CHEOPS<\/a> Misija uporablja tudi tranzitno metodo.<\/p>\n<figure class=\"wp-block-image size-large\" data-width=\"2500\" data-credit=\"ESA\" data-detail-url=\"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2019\/02\/Transiting_exoplanet\" 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\/2019\/02\/transiting_exoplanet\/19220628-1-eng-GB\/Transiting_exoplanet.jpg\" alt=\"Transiting exoplanet\"><figcaption>Eksoplanet v tranzitu<\/figcaption><\/figure>\n<p>Astrometrija je \u0161e ena tehnika, ki jo bo uporabljala ESA-jeva <a href=\"https:\/\/sci.esa.int\/web\/gaia\" target=\"_blank\" rel=\"noopener\">Gaia<\/a> naloga. Pono\u010di lahko opazujemo, kako se zvezde gibljejo po poteh \u010dez na\u0161e nebo, in lahko z izjemno natan\u010dnostjo napovedujemo njihove polo\u017eaje za mnoga leta vnaprej. \u010ce ima zvezda planet, bo njeno gibanje nekoliko druga\u010dno od pri\u010dakovanega \u2013 le za neznatno koli\u010dino, a dovolj, da to opazi Gaia!<\/p>\n<p>To so glavne metode odkrivanja zunajson\u010dnih planetov, \u010deprav obstajajo tudi druge. V\u010dasih je mogo\u010de za fotografiranje uporabiti celo profesionalne observatorije \u2013 \u010deprav so te slike v primerjavi s tistimi, ki jih lahko posnamemo od bli\u017enjih planetov v na\u0161em lastnem Oson\u010dju, zelo preproste.<\/p>\n<figure class=\"wp-block-image size-large\" data-width=\"4042\" data-credit=\"ESA \u2013 SJM Photography\" data-detail-url=\"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2019\/10\/Children_imagine_exoplanets\" 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\/2019\/10\/children_imagine_exoplanets\/20819272-1-eng-GB\/Children_imagine_exoplanets.jpg\" alt=\"Children imagine exoplanets\"><figcaption>Otroci si predstavljajo eksoplanete<\/figcaption><\/figure>\n<p>Z uporabo vseh teh metod so doslej odkrili na tiso\u010de zunajson\u010dnih planetov, in ves \u010das jih odkrivamo \u0161e ve\u010d. Ali bi na katerem od njih lahko obstajalo \u017eivljenje? Morda celo <a href=\"https:\/\/www.esa.int\/kids\/en\/learn\/Life_in_Space\/Are_we_alone\/Are_we_alone\" target=\"_blank\" rel=\"noopener\">inteligentna bitja<\/a> Ali ste nam podobni? Kaj menite?<\/p>\n<p>To je vsekakor zelo razburljiv \u010das za vse, ki jih zanimajo eksoplaneti!<\/p>","protected":false},"excerpt":{"rendered":"<p>The Solar System contains eight planets orbiting our local star, the Sun. But did you know that there are many, many more planets out there in space, orbiting the stars [&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\/2019\/09\/hubble_finds_water_vapor_on_habitable-zone_exoplanet_for_the_first_time\/19700242-1-eng-GB\/Hubble_Finds_Water_Vapor_on_Habitable-Zone_Exoplanet_for_the_First_Time.jpg","esa_banner_description":"We do not yet have the technology to take detailed photos of exoplanets, but an artist created this picture of what one may look like. Copyright: ESA\/Hubble, M. Kornmesser","esa_banner_credit":"ESA\/Hubble, M. Kornmesser","esa_banner_licence":"ESA Standard Licence","esa_banner_detail_url":"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2019\/09\/Hubble_finds_water_vapor_on_habitable-zone_exoplanet_for_the_first_time","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":[],"panel":[],"language":[],"age":[],"duration":[],"resource_type":[],"audience":[],"wf_post_folders":[],"class_list":["post-20","post","type-post","status-publish","format-standard","hentry","category-are-we-alone","category-learn","category-life-in-space"],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/posts\/20","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=20"}],"version-history":[{"count":5,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/posts\/20\/revisions"}],"predecessor-version":[{"id":4261,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/posts\/20\/revisions\/4261"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/media?parent=20"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/categories?post=20"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/tags?post=20"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/panel?post=20"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/language?post=20"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/age?post=20"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/duration?post=20"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/resource_type?post=20"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/audience?post=20"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/wf_post_folders?post=20"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}