SOLATTICE: A Unified Harmonic Structure from Planck to Cosmos

Presented is evidence that matter organises into nested harmonic shells at every observable scale, from the quantum fuzz to the cosmic horizon. The governing equation is L / L0 = 666^p x M where L0 = 1 astronomical unit and p is an integer. The constant 666 emerges as the fundamental frequency ratio of a universal resonant cavity, empirically identified and rooted in the solar number 6 preserved in Indus Valley metrology. At the stellar scale, doubling outward from the solar core lands within 1% on Saturn, Uranus, the asteroid belt, and the Kuiper Belt, while the inner planets fall on fractional projections of the Sun's interior. This same shell architecture, core, mantle, crust, atmosphere, magnetopause, repeats at every scale. The lattice predicts Earth's ocean depth (2.1% error), Europa's ice shell (3%), and that Enceladus's ocean must reach its core, all confirmed by observation. Extending downward, common chemical bond lengths fall at exact integer ratios and geometric constants (e.g., C-H at 1/sqrt(2) of C-C), yielding a design principle for new "harmonic metals" and molecules. Extending upward, the gravitational signature of the lattice itself resolves the dark matter problem without new particles. The speed of light derives naturally as the propagation speed of lattice vibrations. The physical picture is that of a resonant cavity. Matter migrates to the nodes of a primordial vibrational field, like sand on a cymatic plate. The resulting architecture, a harmonic lattice of concentric shells, is the frozen imprint of that resonance. Within this framework, life is not an accident but a consequence of chemistry settling into a deep harmonic node; any body with a stable water shell at the predicted depth becomes a candidate for biology. The theory makes multiple testable predictions spanning exoplanet orbital clustering, ocean-world interiors, material design, and the temporal structure of cosmic history.