The Shadow-First Universe: Redefining Cosmic Structure from Darkness to Light

This archive presents the complete documentation, data, simulations, and visual evidence for the Shadow-First Universe (SFU) theory, a new cosmological model proposing that shadow structures — invisible gravitational templates — expand before light or matter, shaping the cosmos from darkness to illumination. The SFU is centered around the Diegan Shadow Formula: Φ = ρ^1.59, which describes gravitational potential as a function of shadow density. This model successfully explains cosmic structure formation, dark matter behavior, gravitational lensing patterns, and galaxy rotation curves with high accuracy. Included in this archive: - Full research paper (PDF + LaTeX) - Annotated visual figures - MP4 video simulations of SFU vs standard model - Python code for fitting real galaxy rotation data - Public explanation and letters - Submission resources This work proposes a new foundation for gravitational theory, cosmology, and early-universe evolution. This dataset is intended for publication, peer review, and public dissemination.