My cosmic theory understands that the Universe or Cosmos is structured in exponential way, besides of the plane way.
Say, similar to mathematics, matter is structured in exponential units in such a way that many units of matter in any level of the Universe can unite to form other bigger unit with the same properties, shape, elements, physical laws of building, etc.
This way, in mathematics we have as exponential units to the decimal ones, 1, 10, 100, 1000, 10000, .... etc.

With matter the exponential units are the gravitational systems, units of structuring of matter with disc shape, which consist on central nuclei with orbital ones in rotation around them.
In the structuring to these units of matter the main forces that intervene are:
-Gravity for the cohesion of matter, and the
-Magnetic force (reaction force to gravity) that measures and determine the volume of the system, the distribution of orbital ones and the quantity of energy that must to have this unit or gravitational system.

In this exponential dimension (fourth dimension of space and time) we appreciate two directions.
- The ascent direction where inferior units unite to form superior units, as in this case would be atoms that unite to forma stars, and of course, stars uniting to form super-stars, and so forth.
- And the descent direction where units as can be stars are composed by other inferior units as atoms, and of course, atoms are composed by other inferior units as they are sub-atoms, and so forth.

In the special case of our galaxies, any of these don't reach to form a unit of the superior level or super-star due to it is not enough quantity of stars to get it; although the summation of all the galaxies could form a super-star.
And precisely in this our Bing-bang consists, in the explosion of a super-star that produced all our galaxies in great expansive speed of motion.
The same thing occurs continuously in all the Universe places, as they are explosion of supernovas, explosion of the great atoms as uranium, etc.

This way, our galaxies don't form matter units, but intermediate particles among the cosmic levels.

Logically among the proper units of matter, as they are gravitation systems (atoms, stars, etc.), other intermediate particles exist, which could begin (between atoms and stars) with molecules formed by atoms; particles by aggrupation of molecules; organic elements as could be cells; small animal as bacteria; trees, rives, mountains, seas, etc., till get to planets, solar nuclei, and finally the constitution of a star, similar to their component atoms, but a lot of bigger.

But apart from these intermediate particles that are semi-static, we have a lot of particles in motion among systems or units, which could be by order of dimension:
With high speed we have, the bottom radiation, light, cosmic rays, galaxies etc.
With little speed could be calorific particles, current of electron and neutrinos, etc.

Now well, we have spook about living intermediate particles like bacteria, insects, trees, animals, etc. that are composed and structured by atoms as inferior units to stars.
But if the universe is structured in exponential units of material, then among any level these type of living intermediates elements must to exist.

Then all these living elements, bodies, micro and macro animal and vegetal should exist inside the atomic level, as could be in the surfaces of electrons.
Of course, when being the same characteristics electrons and planes, also in the adequate electrons, living elements and bodies should exist.

But much more in the ascent direction, in the super-planets that are created by the summations of great quantity of stars, also must to have all this types of living bodies.
Say, the aggrupation of stars also could give us living tissues and animals.

Scalar of space and time are very import for our study and consideration of the parallel universe or multi-worlds.

We see as an atom is "infinitely" minor than a star (in lineal measurement, about 6,28 x 10^22 time smaller)
This means that the dimensions of the possible animal and plants in the surface of electrons will be 10^22 smaller than the animal on our planet.

But time in electrons will have the same relation with time in planets?
Certainly, the time in electrons is 10^22 time smaller than time in planets.

This means that on the surface of electrons with life, the civilizations develop, pass and disappear completely while we take a cup of coffee.
Say, we don't have to worry about the damage or influence that our technology can produce in these civilizations because of their life is ephemeral regarding to ours.