Is Dark matter the Cause of Cold in the Universe?

Is Dark matter the Cause of Cold in the Universe? Ancient and medieval scientists knew that there should be a matter that filled the universe, which was necessary to explain the nature of the universe, they called this type of matter "ether", modern scientists due to observation in the rotation of galaxies, concluded the existence of such ether but called it dark matter, and the most advanced research concluded that this hypothetical matter does not emit enough electromagnetic radiation to be detected with current technical means, but whose existence can be inferred from the gravitational effects it causes on visible matter, as well as on the anisotropies of the cosmic microwave background present in the universe. This work responds to this mystery and to each of the known characteristics of dark matter. To respond to dark matter or ether, we must first understand how matter originated in the universe, the most accepted explanation, is known as the big bang, it explains th...