The Cyclic Universe and the Mechanism of the Great Bounce in the Dynamic Cosmic Medium Model

The standard cosmological model successfully describes the evolution of theuniverse from an early hot and dense state, yet it leaves open fundamentalquestions concerning singularity, the beginning of time, and the long-term fate ofthe cosmos. This article presents an alternative conceptual framework based onthe Dynamic Cosmic Medium Model (DKMM), in which the universe isunderstood not as a one-time event beginning in a singularity, but as a systempassing through cycles of expansion and contraction. In this model, space is filledwith a physical medium possessing finite compressibility, pressure, andthermodynamic properties. These very properties make it possible for extremecompression not to lead to a mathematical singularity, but instead to reach alimiting state followed by a Great Bounce.The article develops the basic mechanism of this transition, distinguishesbetween a global cosmological bounce and local collapses that may end in astabilized ultra-dense state, and discusses how the present expansion phase, thecooling of the cosmic microwave background, and possibly even the existence ofextremely large cosmic structures may be interpreted within this framework. Theaim of the text is not to claim that the cyclic DKMM is an experimentallyconfirmed theory, but to show that it offers a coherent alternative to the pictureof a universe beginning in a singularity and heading toward a one-time final state.