And unfortunately, as a result of many observations and few successes interpretive find that almost all current theories about the end of the universe are deeply pessimistic, apocalyptic and only few dare to raise the possibility of a kinder future for our coexistence with the Universe. OPTIMISTIC THEORY The Universe, seen as all that exists (or just the whole), is composed of: space + field + energy + time. And we human beings are part of the whole, we have a bit of it. The universe for some, and the universe had a beginning for them is finite, it is only the visible universe, and for them the quantity of energy contained in it is finite, say the time is not eternal, that space is finite and it seems that, for them, the space has to be growing to the extent that the visible matter and energy, expands. For others the space is infinite and eternal and matter-energy contained in space can be finite or infinite.
Space, by simple logic, necessarily has to be: three-dimensional and infinite. To understand that space is infinite enough to rely on science: The philosophy and specifically in the logic, logical reasoning and imagine any possible limits or boundary of space and think that after that limit is imaginary, only possible answer is that there is more space, ie more of the same, or can not be a limit, the space continues indefinitely. To understand why both space and the universe are three-dimensional enough to understand that constantly radiate energy components of the visible universe, travels at the speed of light across the empty space in all directions and the three-dimensional space travel , has no end, because the current theory on the electromagnetic energy tells us that electromagnetic waves in vacuum self regenerate indefinitely and that energy while traveling is still part of the universe, and the space occupied or used by the energy that travels is also part of the universe, and this will occur indefinitely, so the space and the universe must also be three dimensional, as are all the possible paths of electromagnetic radiation emitted from the visible universe. .