The Missing Antimatter and the Dark Matter Question: A Possible Common Origin and the Surviving Record of an Earlier Universe

Could the missing-antimatter and dark-matter questions share a physical history? This illustrated research essay follows that question through the 2010 hylogenesis precedent, a proposed chi (χ/X) substrate, gravitational structure, Galactic Centre comparisons, ancient-cluster alignments and simplified contraction–crossing–expansion models. χ is introduced as the author’s provisional physical hypothesis, distinct from established cosmological components. The bundle contains the main essay in PDF and editable Word formats, eight supporting/source documents, analytic crossing code and generated results, a reading guide and verification notes. Supporting investigations include the five-field Galactic Centre study, the Scout Expedition, survival clusters and later dark-energy/container notes. Historical drafts, failed tests and unrecovered records retain their stated status. The 241-row analytic dust scan was reproduced during preparation. It tests selected closed-FLRW turning-point conditions, not an observationally fitted cosmology or the survival of realistic perturbations. The Bullet Cluster panels are published-parameter reconstructions; Galactic Centre and cluster interpretations remain exploratory. Hylogenesis supplies theoretical precedent for linked visible and hidden baryon asymmetries, not proof of this χ proposal. Prepared by David Cecil Jones with AI assistance. Independent examination, corrections and collaboration are welcome: [email protected].