The acoustic peak hierarchy in the Cosmic Microwave Background temperature anisotropy power spectrum and the baryon acoustic oscillation feature in large-scale galaxy clustering are widely treated as among the strongest observational supports of the standard Lambda-CDM cosmological framework. In the standard interpretation, both are fossil signatures of pressure oscillations in a tightly coupled photon-baryon plasma prior to recombination, preserved from a finite-age Big Bang universe. The present paper accepts the observational reality of both features but disputes two claims: first, that these observations uniquely require a singular Big Bang origin; and second, that the BAO scale of approximately 490 million light years is a raw observation rather than a measurement processed through the assumed FLRW expansion history. Within the Big Flare-Up Theory, the universe is spatially infinite, temporally eternal, and dynamically active. The present paper develops a steady-state alternative in which structured spectra arise as long-term statistical outcomes of ongoing shell-like and ripple-like structure generation balanced against scale-dependent damping. A power-balance master equation dP/dt = I - DP yields P (k) = I (k) /D (k) in statistical steady state. Shell geometry naturally generates the oscillatory Fourier factor sin (kR) / (kR) ², providing a mathematically explicit route to BAO-like wiggles without invoking a singular origin. A microphysical layer is added in which Thomson scattering with confirmed cross-section sigmaT = 6. 6524 x 10^-29 m² and diffusion-like Silk damping continue to operate in present ionised media, with coupling rate GammaT = nₑ sigmaT c and damping coefficient Ddiff = c/ (3 nₑ sigmaT). These confirm that the same class of microphysics that the standard model invokes as unique to recombination operates in the ongoing universe, materially weakening the uniqueness claim. A current-universe Jeans-length estimate yields a preferred scale within approximately 7% of the observed BAO ruler using only present measured quantities and no assumed expansion history. A concrete CMB-star-formation-rate cross-correlation prediction is derived with formula Cₗ^CMB x SFR = (3 nₑ² sigmaT² / k²) x bSFR x Pₘatter (k), testable with CMB-S4. The paper is presented as a framework and mechanism paper, not a final precision-fit replacement for the standard Boltzmann-code description.
Vijay Shankar Sharma (Fri,) studied this question.
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