Existence is the most fundamental and broad concept that can be used for definitions. Existences can be perceived as presences in transformation in space through interactions, attesting to the temporal dimension; constantly, due to variations in energy, interactions generate wear and tear. Based on this existential foundation, the Universe, which exists and contains everything, can be considered unique because it has nothing around it to interact with; thus, its existence or transformation, represented by the current expansion, is characterized only by the interactions of its components; since there is only wear and tear with interaction, the Universe as a whole is seen as evolving without wear and tear, maintaining its energy and mass in constant variation (continuous time). To clarify this perspective, the Standard Model, which considers 3D Space, is supplemented by the concepts of rest energy and vanishing dimensions. After considering and interweaving data and principles already presented in other studies, the addition or differentiation of this study is to describe a cause for the beginning of the current expansion of the Universe and to improve the understanding of the process of existential evolution.