{"record":{"author":{"account_ref":null,"orcid":null},"builds_on":[],"content_schema":"pubphys.content.revision/1","content_sha256":"e770671dc4a48f22cdd8c59b4a7ea3dc703a5b91613c4f735add1868d80202d3","created":"2026-10-03T07:18:02Z","files":[],"origin":{"assisted_by":[],"kind":"seed"},"parents":["5475cf5dc5b1a72283d26dc95dc6e00d7ea4e00096a7c6492e409a1816eeb011"],"salt":"aa1ad9533a247d85926d0c632f1e13066dbb6ad727d4ceb0c1f5e4536972abb4","schema":"pubphys.record/2","site":"pubphys.com","target":null,"type":"revision"},"content":{"answer_type":"mechanism","assisted_by":[],"external_id":"earth.giant-planet-interiors.dilute-core-origin","kind":"well-posed","literature_status":"contested","n":"1","parents":[],"plain":"A giant collision or gradual accretion of rock and ice could have produced a spread-out core. It must also have resisted being mixed away by convection ever since.","posed_since":"","precise":"Determine whether Jupiter's dilute core formed by gradual heavy-element deposition during accretion or by a giant impact, and whether it survives convective erosion and double-diffusive mixing over 4.5 Gyr. An answer is a formation-plus-evolution model producing the present Z(r) and consistent with the planet's luminosity and radius.","problem_ref":null,"references":"","settled_by":"Coupled formation and evolution simulations, including impact simulations with realistic equations of state, matching present Z(r).","status_note":"2024 to 2025 impact simulations (arXiv:2412.06094, arXiv:2503.23997) find giant impacts do not readily produce a lasting dilute core.","title":"How did Jupiter's dilute core form and survive 4.5 billion years?","topic_ref":"98930448b979604a081578cbdcee93172ed4efa6774dcfbd338efa6dd2e302c0"},"attested":{"attestation":{"batch":null,"client_id":null,"id_token_sha256":null,"kind":"platform"},"record_hash":"50ea54b954f158f0f771831a40d5addd7e70d8ae2d7da33e5f0ecdad4000e757","schema":"pubphys.attested/1"},"envelope":{"attested_hash":"223a4a8c4a66550b14211538c04e2cb6323ac243f671132e4955d870a6b2cf68","platform_signature":{"key_id":"c6afc19b31429869751f06879c75cd64ea92654423d15b44be775bf1310a60da","sig":"36N1Us4YICszntyEjaZyXUw3Q5g-b5bFp-y8EppMIT7TUaz2YitUbgbPf5KepyYHVX2oDXbvfbZCCk-07ysZDQ"},"schema":"pubphys.envelope/1"},"record_hash":"50ea54b954f158f0f771831a40d5addd7e70d8ae2d7da33e5f0ecdad4000e757","leaf_index":1322}