| Popis: |
Cosmology gives us two ways for considering the direction of time, which means an overall development of physical reality from past to the future. Firstly there is an overall development if, coming from a beginning, the evolution of the universe is a function of the cosmic time which gives us the age of the universe. Secondly there is an overall development if cosmic time cannot only date the eras of the universe but also explain the birth of the main complex structures we find inside it. In this second manner, which presupposes the first, the expansion of the universe during cosmic time is a cooling factor which permitted the breaking of the symmetries discovered by theoreticians while studying the different interactions. These breakings were responsible not only of the four distinct interactions but also of the various degrees of physical reality. Some metaphysical reflections are unavoidable in the view of such a history. |
