{"id":41759,"date":"2026-06-03T23:04:56","date_gmt":"2026-06-03T21:04:56","guid":{"rendered":"https:\/\/karmaka.de\/?p=41759"},"modified":"2026-06-03T23:05:46","modified_gmt":"2026-06-03T21:05:46","slug":"phosphorus-nitrogen-systematics-of-first-generation-planetesimals-constrain-life-essential-element-delivery-to-earth","status":"publish","type":"post","link":"https:\/\/karmaka.de\/?p=41759","title":{"rendered":"Phosphorus-nitrogen systematics of first-generation planetesimals constrain life-essential element delivery to Earth<span class=\"badge-status\" style=\"background:#787878\">OPEN ACCESS<\/span>&nbsp;"},"content":{"rendered":"\n<p>Debjeet Pathak, Rajdeep Dasgupta, and Naidhruv Iyer<\/p>\n\n\n\n<p>Science Advances<br>3 Jun 2026<br>Vol 12, Issue 23<\/p>\n\n\n\n<p><a href=\"https:\/\/www.science.org\/doi\/10.1126\/sciadv.aed8749\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>LINK (OPEN ACCESS)<\/strong><\/a><br><a href=\"https:\/\/www.science.org\/doi\/epdf\/10.1126\/sciadv.aed8749\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>PDF (OPEN ACCESS)<\/strong><\/a><\/p>\n\n\n\n<p class=\"justify-text\">&#8220;Habitability of rocky planets relies on the budgets of life-essential elements (LEEs) in their building blocks. The provenance and geochemistry of the planetesimals that supplied the LEEs to Earth remain debated. Traditional models argue LEE delivery via outer Solar System chondrites, but their 2 to 4 million-year (Myr) accretion ages preclude them as the first feedstock. To investigate the initial LEE distribution, we reconstructed the phosphorus-nitrogen (P-N) budget of the iron meteorite parent bodies (IMPBs), which accreted &lt;1 Myr of Solar System formation. High-pressure-temperature experiments of P-N partitioning between solid and liquid alloys combined with geochemical models reveal higher P\/N ratios in outer Solar System IMPBs than in inner ones\u2014a trend reversed in chondrites. This evolution reflects early refractory schreibersite delivery to the outer disk, later curtailed by Jupiter\u2019s growth. Further modeling in combination with previous elemental and isotopic data on volatile LEEs suggests that both early and later inner Solar System planetesimals are chief contributors to Earth\u2019s LEE inventory.&#8221;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Debjeet Pathak, Rajdeep Dasgupta, and Naidhruv Iyer Science Advances3 Jun 2026Vol 12, Issue 23 LINK (OPEN ACCESS)PDF (OPEN ACCESS) &#8220;Habitability of rocky planets relies on the budgets of life-essential elements (LEEs) in their building blocks&#8230;.<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[214,420,73],"tags":[6979,1135,7161,654,1312,1267,1009],"_links":{"self":[{"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/posts\/41759"}],"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=41759"}],"version-history":[{"count":2,"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/posts\/41759\/revisions"}],"predecessor-version":[{"id":41761,"href":"https:\/\/karmaka.de\/index.php?rest_route=\/wp\/v2\/posts\/41759\/revisions\/41761"}],"wp:attachment":[{"href":"https:\/\/karmaka.de\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=41759"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/karmaka.de\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=41759"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/karmaka.de\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=41759"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}