Cosmological and Astronomical Predictions of the Dynamic Cosmic Medium Model

This article presents the cosmological and astronomical predictions of the Dynamic Cosmic Medium Model (DKMM). It directly follows the previous articles in the series: Article 7, which described circulation as a unifying principle; Article 8, which developed particle geometries and layered nuclei; and Article 9, which formulated testable predictions in microphysics and nuclear transitions. While Article 9 focused on microphysical and laboratory tests, this article develops DKMM predictions at the astronomical and cosmological level.The central thesis of the article is that many phenomena currently attributed to dark matter, dark energy, or modified gravity may be interpreted in DKMM as manifestations of state gradients, circulation, pressure, density, refractive properties, and the global dynamics of a real physical medium. DKMM does not add a new separate entity for every mismatch between theory and observation, but assumes one common physical carrier: the Dynamic Cosmic Medium and its different state regimes.The article formulates concrete predictions for galactic rotation curves, gravitational lensing, Einstein rings, galactic centers, gamma-ray excesses, dwarf galaxies, early galaxies observed by the James Webb Space Telescope, largescale structures, relic anisotropies, and possible deviations in the propagation of light and gravitational waves. The aim is not to provide a completed numerical cosmology of DKMM, but to translate the basic ontology of the model into a set of testable astronomical predictions.