The Big Snap

The Big Snap proposes that the universe nucleated from a body-centered cubic (BCC) lattice phase transition at the Planck epoch. The scalar field driving the transition is identified with dark energy: taking the observed BAO scale of 150 Mpc as the BCC lattice constant, the scalar field mass is uniquely determined as m = 4.26 × 10⁻³² eV with no additional free parameters. The dark energy density follows as a consistency output with a sub-Planckian vacuum expectation value. The framework predicts a dark energy equation of state w₀ = −0.970 and generates 20 falsifiable observational signatures imprinted in large-scale structure. Three independent observational tests are reported. The Giant Arc (z ≈ 0.8, Lopez et al. 2022) aligns with a predicted BCC body diagonal direction at 3.89σ. A BCC orientation fit to the SDSS DR7 void catalog places the nearest face diagonal axis 12.6° from the CMB Cold Spot across five independent fits, with a 2,000,000-trial Monte Carlo returning p = 0.006 (2.5σ). Two independent void-finding algorithms applied to the full-sky 2MASS Redshift Survey find voids clustering toward the 12 BCC face diagonal directions at 2.2–3.3σ with a proper shuffled null. Combined Fisher significance: p = 8 × 10⁻⁸, 5.24σ.