Our dimension is defined as a series of adjacent segments of reality that together, and only together, form a continuum. like frames on a movie reel.
we live in a linear motion along with time. This dimension that we experience so vividly through is the very tip of the figurative iceberg. We experience the world through sensory input from the physical plane. The physical plane is a condensed manifestation of the higher planes which are made up of thought energy. It is very important that we note that these higher planes are just as real as everything that we experience physically. This is the psychic realm or the astral plane, the plane in which our mind's eye operates.  the higher planes are made up solely of thought...they exist solely as ideas, Concepts and intentions. what we experience in the physical realm is actually created by our higher selves, our thoughts condense from the divine source that is the  conscious energy of the universe into the physical plane which is the heaviest and slowest vibrating form of conscious thought.  we as humans have gained the ability to access higher frequencies and bring them down into the physical realm. we call this imagination. envisionment... and it has aided us in mastering our reality to a great degree.

The universe is infinite.

I want to start by saying that I am not by any means a scientist, Have not studied this subject at any college, university or private institution. This knowledge is solely accredited to a higher order of events, Fate, maybe chance, some might call it the hand of god.
The first topic I will discuss is the Infinity of the universe.
the universe as we know is a great expanse, which to our knowledge as human beings is
vastly unexplored. from our limited perspective we can see in only two directions when speaking of the universe: Outward, and Inward.
Outward perspective:
when looking out into the stars we notice a pattern. planets revoling around stars, Solar systems revolving around galaxies, galaxies gathering to form what appears to be webs of cosmic matter.
Imagine yourelf the size of the entire universe, every galaxy the size of an atom, This is where
fractal theory has it's roots.
Inward perspective: if we analyze the universe at the sub quantum level, we see that it becomes more and more difficult to see into the smallest part of matter. in fact 99.9 percent of all matter is actually not matter at all. it is energy. much like the composition of our universe when looking at it from a larger perspective, the universe itself is made up of small points of energy (stars, suns Galaxies)manifesting themselves into reality and condensing into a holographic picture that to our senses seems REAL.