This paper proposes a cosmological origin model distinct from the standard Big Bang singularity. In this framework, the observable universe originated as a propagating phase transition within a pre-existing equilibrium ocean of undifferentiated energy. The expanding phase boundary converts the energy medium into spacetime, matter, and radiation as it propagates — naturally producing the large-scale cosmic structure, the Cosmic Microwave Background, dark energy, and the variable density of space observed across the universe. Dark energy is reframed not as a mysterious cosmological constant but as the ongoing process of the expanding phase boundary feeding on the prior energy medium, providing a structural explanation for accelerating expansion and the Hubble Tension. The model is compared honestly against cosmic inflation, identifying competitive strengths and openly acknowledging open questions. Connections to string theory and the anomalous early galaxy observations of the James Webb Space Telescope are addressed.
Randolph Perrier (Wed,) studied this question.