The geological age of the Earth is approaching five billion years old or slightly older than the Sun, and the oldest stars of the Galaxy are more than 10 billion years old. The history of the Universe as a whole is 15-18 billion years, and before the formation of modern planets, stars and galaxies, all its matter was, apparently, almost a homogeneous environment. Knowledge accumulated over many decades about the structure and evolution of celestial bodies , The observational discoveries of the last half century and especially the discovery of the expansion of the Universe and the existence of isotropic relic radiation in it make it possible to form now a definite idea of the properties of the cosmic environment in a pre-stellar form. The Pre-Galactic Era , Physical processes , which led to the formation of the observed structures of the Universe from homogeneous matter.