{"id":42253,"date":"2026-07-30T10:12:19","date_gmt":"2026-07-30T08:12:19","guid":{"rendered":"https:\/\/karmaka.de\/?p=42253"},"modified":"2026-07-30T10:14:09","modified_gmt":"2026-07-30T08:14:09","slug":"stardust-as-nucleation-seeds-for-the-earliest-solids-in-the-solar-system","status":"publish","type":"post","link":"https:\/\/karmaka.de\/?p=42253","title":{"rendered":"Stardust as nucleation seeds for the earliest solids in the Solar System<span class=\"badge-status\" style=\"background:#787878\">OPEN ACCESS<\/span>&nbsp;"},"content":{"rendered":"\n<p>Ren T. C. Marquez, Bruce L. A. Charlier, and Fran\u00e7ois L. H. Tissot<\/p>\n\n\n\n<p>Science Advances<br>29 Jul 2026<br>Vol 12, Issue 31<\/p>\n\n\n\n<p><a href=\"https:\/\/www.science.org\/doi\/10.1126\/sciadv.ady2311\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>LINK (OPEN ACCESS)<\/strong><\/a><br><a href=\"https:\/\/www.science.org\/doi\/epdf\/10.1126\/sciadv.ady2311\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>PDF (OPEN ACCESS)<\/strong><\/a><\/p>\n\n\n\n<p class=\"justify-text\">&#8220;Recent reports of extreme strontium-84 excesses in primitive Solar System condensates, known as fine-grained calcium-aluminum\u2013rich inclusions (fg-CAIs), suggest that presolar stardust may be preserved in refractory meteoritic components. This is at odds with preconceptions that presolar grains were completely vaporized in the CAI-forming region. Here, we reappraise the role of presolar materials in early condensation and overall disk heterogeneity by isolating strontium from primary fg-CAI phases. We demonstrate that extreme strontium-84 anomalies are likely hosted in a subpopulation of CAI oxides. The anomalies of primitive noncarrier phases are shown to be attenuated but correlated with the abundance of presolar precursors, which suggests that carriers exert leverage on ensuing condensate compositions. We propose that this relationship between isotope anomalies in refractory CAI components stems from stardust acting as nucleation seeds for the earliest solids formed in the Solar System.&#8221;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Ren T. C. Marquez, Bruce L. A. Charlier, and Fran\u00e7ois L. H. Tissot Science Advances29 Jul 2026Vol 12, Issue 31 LINK (OPEN ACCESS)PDF (OPEN ACCESS) &#8220;Recent reports of extreme strontium-84 excesses in primitive Solar System&#8230;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[66,586,76,57],"tags":[1846,7199,1718,3830,5662,5184,4570,1853,7276],"_links":{"self":[{"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/posts\/42253"}],"collection":[{"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/karmaka.de\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=42253"}],"version-history":[{"count":1,"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/posts\/42253\/revisions"}],"predecessor-version":[{"id":42254,"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/posts\/42253\/revisions\/42254"}],"wp:attachment":[{"href":"https:\/\/karmaka.de\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=42253"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/karmaka.de\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=42253"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/karmaka.de\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=42253"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}