{"id":131686,"date":"2026-03-17T19:40:39","date_gmt":"2026-03-17T19:40:39","guid":{"rendered":"https:\/\/www.europesays.com\/ee\/131686\/"},"modified":"2026-03-17T19:40:39","modified_gmt":"2026-03-17T19:40:39","slug":"asteroid-ryugul-on-olemas-koik-geenimaterjali-alused-universum","status":"publish","type":"post","link":"https:\/\/www.europesays.com\/ee\/131686\/","title":{"rendered":"Asteroid Ryugul on olemas k\u00f5ik geenimaterjali alused | Universum"},"content":{"rendered":"<p>Asteroid Ryugu, mille pinnalt t\u00f5i m\u00f5ned aastad tagasi proove Jaapani kosmoseaparaat Hayabusa 2, pakub t\u00e4ielikku valikut eluslooduse geeniainese p\u00f5hialustest.<\/p>\n<p>See on sama valik, mida on avastatud pakkuvat ka asteroid Bennu, mille proovid on samuti Maale j\u00f5udnud ja anal\u00fc\u00fcsimist leidnud.<\/p>\n<p>Jaapani teadlaste \u00e4sjane teade annab tunnistust suurest t\u00f5en\u00e4osusest, et elu m\u00f5ned p\u00f5hilised aluskomponendid on P\u00e4ikeses\u00fcsteemi asteroidkonnas laiemaltki levinud ja et v\u00f5ib-olla on just sellistest t\u00e4htsatest asteroidimolekulidest ka maine elu oma tekkel abi ja tuge saanud.<\/p>\n<p>Toshiki Koga Jaapani Maa- ja Mereteaduse ja -tehnika Agentuurist ja ta kolleegid kirjutavad ajakirjas <a href=\"https:\/\/www.nature.com\/articles\/s41550-026-02791-z\" target=\"_blank\" rel=\"noopener nofollow\">Nature Astronomy<\/a>, et neil on korda l\u00e4inud Ryugult aastal 2018 korjatud proovidest \u00fcles leida nii adeniin, guaniin, t\u00fcmiin ja ts\u00fctosiin, mis moodustavad kaksikahelalise p\u00e4rilikkusaine DNA selgroo, kui ka uratsiil, mis asendab \u00fcksikahelalises valguinfokandajas RNA-s t\u00fcmiini.<\/p>\n<p>See tulemus viitab koos asteroid Bennu proovidega ja ka m\u00f5ne Maalt korjatud meteoriidi koostise uuringuga, et kogu geeniinfo ja valgus\u00fcnteesi nii\u00f6elda t\u00e4hestik on P\u00e4ikeses\u00fcsteemis arvatavasti juba algaegadest alates saadaval olnud. Elu nii\u00f6elda stardipakett Maal v\u00f5iski p\u00e4rineda siia omal ajal massiliselt langenud asteroididelt ja komeetidelt.<\/p>\n<p><img decoding=\"async\" style=\"width: 100%;\" src=\"https:\/\/www.europesays.com\/ee\/wp-content\/uploads\/2025\/09\/558447h58e7.png\"\/><\/p>\n<p>Aastal 1999 avastatud asteroid Ryugu, mille l\u00e4bim\u00f5\u00f5t on umbes 900 meetrit, arvatakse Maa-l\u00e4hedaste asteroidide hulka; l\u00e4hitulevikus ta Maale kukkumist siiski karta ei ole. Kukkumisel ei oleks enam ka suuremat m\u00f5tet, sest k\u00f5iki viite l\u00e4mmastikalust on Maal juba rohkesti olemas ja tehakse kogu aeg juurde.<\/p>\n<p>Erinevalt Maast ei ole Ryugul siiski kindlasti kunagi elusolendeid elanud.<\/p>\n<p>L\u00e4mmastikaluseid on sealses materjalis \u00fclimalt v\u00e4ikeses kontsentratsioonis, nii et Koga ja kolleegid pidid nende tuvastamiseks kasutama tipptehnoloogilist massispektromeetrit.<\/p>\n<p>P\u00f5nev on ka asjaolu, et l\u00e4mmastikaluste suhtelised kogused on Ryugu ja Bennu proovides erisugused. See annab teadlastele loodetavasti l\u00e4htekoha edasisteks m\u00f5tisklusteks selle \u00fcle, kuidas l\u00e4mmastikalused miljardite aastate eest \u00fcle\u00fcldse tekkida v\u00f5isid.<\/p>\n<p>Pildil on asteroid Ryugu fragment. <\/p>\n<p>Teadusuudised on Vikerraadios eetris esmasp\u00e4evast reedeni ca kell 8.35 ja laup\u00e4eval ca kell 8.25.<\/p>\n","protected":false},"excerpt":{"rendered":"Asteroid Ryugu, mille pinnalt t\u00f5i m\u00f5ned aastad tagasi proove Jaapani kosmoseaparaat Hayabusa 2, pakub t\u00e4ielikku valikut eluslooduse geeniainese&hellip;\n","protected":false},"author":2,"featured_media":131687,"comment_status":"","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","_share_on_mastodon":"0"},"categories":[14],"tags":[131,301,130,37,33,35,59800,34,36,59801,59799],"class_list":["post-131686","post","type-post","status-publish","format-standard","has-post-thumbnail","category-ari","tag-ari","tag-asteroid","tag-business","tag-ee","tag-eesti","tag-eesti-keel","tag-elu-teke","tag-estonia","tag-estonian","tag-lammastikalus","tag-ryugu"],"share_on_mastodon":{"url":"https:\/\/pubeurope.com\/@ee\/116246218522181511","error":""},"_links":{"self":[{"href":"https:\/\/www.europesays.com\/ee\/wp-json\/wp\/v2\/posts\/131686","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.europesays.com\/ee\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.europesays.com\/ee\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.europesays.com\/ee\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.europesays.com\/ee\/wp-json\/wp\/v2\/comments?post=131686"}],"version-history":[{"count":0,"href":"https:\/\/www.europesays.com\/ee\/wp-json\/wp\/v2\/posts\/131686\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.europesays.com\/ee\/wp-json\/wp\/v2\/media\/131687"}],"wp:attachment":[{"href":"https:\/\/www.europesays.com\/ee\/wp-json\/wp\/v2\/media?parent=131686"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.europesays.com\/ee\/wp-json\/wp\/v2\/categories?post=131686"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.europesays.com\/ee\/wp-json\/wp\/v2\/tags?post=131686"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}