{"id":67284,"date":"2025-12-18T07:29:11","date_gmt":"2025-12-18T07:29:11","guid":{"rendered":"https:\/\/www.europesays.com\/ee\/67284\/"},"modified":"2025-12-18T07:29:11","modified_gmt":"2025-12-18T07:29:11","slug":"saturni-rongaid-katab-paks-tolmukiht-universum","status":"publish","type":"post","link":"https:\/\/www.europesays.com\/ee\/67284\/","title":{"rendered":"Saturni r\u00f5ngaid katab paks tolmukiht | Universum"},"content":{"rendered":"<p>Saturn on oma uhkete r\u00f5ngastega \u00fcks P\u00e4ikeses\u00fcsteemi visuaalselt efektsemaid planeete. N\u00fc\u00fcd selgub, et r\u00f5ngad on tegelikult veel efektsemad kui esialgu silmale paistab.<\/p>\n<p>Enne veel, kui NASA kosmosesond Cassini 2017. aastal Saturni atmosf\u00e4\u00e4ri s\u00f6\u00f6stes oma tulemusliku vaatlust\u00f6\u00f6 l\u00f5petas, tegi ta planeedi \u00fcmber veel m\u00f5ned viimased tiirud, mille jooksul v\u00f5ttis ta tolmuproove nii r\u00f5ngaste kohalt kui ka nende alt.<\/p>\n<p>Andmed nende proovide kohta on teadlaste k\u00e4sutuses seniajani, ja r\u00fchm Saksa teadlasi on neid n\u00fc\u00fcd uuesti l\u00e4hemalt anal\u00fc\u00fcsinud.<\/p>\n<p>Anal\u00fc\u00fcsi p\u00f5hjal kirjutavad Simon Linti Berliini Vabast \u00dclikoolist ja ta kolleegid ajakirjas <a href=\"https:\/\/iopscience.iop.org\/article\/10.3847\/PSJ\/ae18c1\" target=\"_blank\" rel=\"noopener nofollow\">The Planetary Science Journal<\/a>, et Saturni r\u00f5ngad on tegelikult paksemad kui esmapilgul n\u00e4ib. V\u00f5i v\u00e4hemalt \u00fcmbritseb neid paks, kuigi h\u00f5re tolmukiht.<\/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>Teadlastel oli anal\u00fc\u00fcsida 1680 tolmuk\u00fcbemete m\u00f5\u00f5tmist, mille Cassini oli 20 tiirul teinud, kui k\u00fcbemed kiiresti ja hulgi ta m\u00f5\u00f5teinstrumenti tabasid. Seejuures oli instrument suutnud m\u00e4\u00e4rata p\u00f5rkel aurustunud k\u00fcbemete keemilist koostist.<\/p>\n<p>Linti ja kolleegid t\u00f5devad, et tolm sisaldas enam-v\u00e4hem t\u00e4pselt samasuguseid silikaatseid mineraale, kui need, mida teatakse leiduvat rohkesti r\u00f5ngais. M\u00e4rkimisv\u00e4\u00e4rselt \u00fchesugune oli magneesiumi, kaltsiumi ja raua sisaldus.<\/p>\n<p>M\u00f5\u00f5tet\u00e4psuse piires ongi teadlaste s\u00f5nul tegemist \u00fche ja sama materjaliga. Nii v\u00e4idavadki nad, et r\u00f5ngaste kohal ja all leiduv tolm ongi r\u00f5ngastest p\u00e4rit.<\/p>\n<p>Arvutimudel n\u00e4itas, et oma praegusse asukohta j\u00f5udmiseks on tolmuk\u00fcbemed pidanud r\u00f5ngaist v\u00e4lja paiskuma v\u00e4hemalt 25 kilomeetrise tunnikiirusega.<\/p>\n<p>Nii v\u00f5ibki aga kergesti juhtuda, t\u00f5devad teadlased, kui r\u00f5ngast l\u00e4bib mikrometeoroid. Viimaseid liigub sealkandis aga t\u00f5esti rohkesti.<\/p>\n<p>Mudeliga k\u00f5lab kokku ka t\u00e4helepanek, et r\u00f5ngastest kaugemal on tolm h\u00f5redam kui r\u00f5ngaile l\u00e4hemal.<\/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":"Saturn on oma uhkete r\u00f5ngastega \u00fcks P\u00e4ikeses\u00fcsteemi visuaalselt efektsemaid planeete. N\u00fc\u00fcd selgub, et r\u00f5ngad on tegelikult veel efektsemad&hellip;\n","protected":false},"author":2,"featured_media":67285,"comment_status":"","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[5],"tags":[26,27,34202,37,33,35,34,36,31,32,21,28,29,19,15041,25,26532,34201,34200,23,24,22,20,30],"class_list":{"0":"post-67284","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-uldised-uudised","8":"tag-breaking-news","9":"tag-breakingnews","10":"tag-cassini","11":"tag-ee","12":"tag-eesti","13":"tag-eesti-keel","14":"tag-estonia","15":"tag-estonian","16":"tag-featured-news","17":"tag-featurednews","18":"tag-headlines","19":"tag-latest-news","20":"tag-latestnews","21":"tag-news","22":"tag-paikesesusteem","23":"tag-populaarseimad-lood","24":"tag-saturn","25":"tag-saturni-rongad","26":"tag-tolm","27":"tag-top-stories","28":"tag-topstories","29":"tag-uldised-uudised","30":"tag-uudised","31":"tag-viimased-uudised"},"share_on_mastodon":{"url":"https:\/\/pubeurope.com\/@ee\/115739398412956844","error":""},"_links":{"self":[{"href":"https:\/\/www.europesays.com\/ee\/wp-json\/wp\/v2\/posts\/67284","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=67284"}],"version-history":[{"count":0,"href":"https:\/\/www.europesays.com\/ee\/wp-json\/wp\/v2\/posts\/67284\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.europesays.com\/ee\/wp-json\/wp\/v2\/media\/67285"}],"wp:attachment":[{"href":"https:\/\/www.europesays.com\/ee\/wp-json\/wp\/v2\/media?parent=67284"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.europesays.com\/ee\/wp-json\/wp\/v2\/categories?post=67284"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.europesays.com\/ee\/wp-json\/wp\/v2\/tags?post=67284"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}