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[Source](https://pixabay.com/illustrations/fantasy-planet-moon-light-magic-4164734/)

We probably might have heard of concepts/entities such as black holes, dark matter, dark energy and maybe some other dark concepts/entities which i may not be aware of. These entities are of course found in our observable universe and they all seem to have something very much in common. They keep us mostly in the dark (knowledge-wise) by withholding important informations about themselves, especially with the fact that they don't reflect or emit radiations.

In our observable universe, when an observer - like us, and an object are far apart from each other in vacuum - no matter, to tell if that object exists, we need to gain physical informations from it, especially the objects physical properties. To gain these informations, there are two possibilities, which are, moving closer to the object or employing a messenger (something that carries information about the object and from the object to the observer), the latter being helpful when the observer and object are astronomically far apart from each other and greater speed is needed.

Have you ever wondered how it's possible that we have knowledge of what lies and happens beyond our planet, solar system and galaxy ? - despite the fact that we haven't visited those places. Yes, it's true that we have theories but for those theories to be accepted as facts, they need to be verified experimentally - as per the requirement of true science. So, how then do we confirm these theories, if we don't visit those places ?

It's very simple, we make use of messengers and one the most useful messenger, if not the most useful is radiation. Electromagnetic waves of which visible light is a part of happens to be the fastest thing in our universe. Mind you, even when we are closer to the object, we still need radiation like visible light to gain information from the object and it's because we have "eyes".

Every macroscopic object and most activities either emits or reflects radiations in vacuum, these radiations do actually carry informations about the object or activity. It is by this principle that experimental cosmology survives.

If an activity or object outside our planet doesn't emit/reflect any form of radiation, cosmologist give them weird names either containing words such as "black" or "dark".

For black holes, nobody knows exactly the kind of activities that goes on inside of it and it is because for now it's inside doesn't seem to emit or reflect any radiation, especially light/electromagnetic waves. As a matter of fact, if a radiation is to be observed from the inside of a black hole, then it would have to be moving at superluminal speed (speed greater than the cosmic speed limit a.k.a the vacuum speed of light). Black holes seem black on the inside with respect to an outside observer and it's why it's called a "black hole".

For dark matter - responsible for the weird motion (rotation) of galaxies, they also seem not to emit/reflect radiations. The only information cosmologists/physicists knows about them is that they only interact with normal matter gravitationally, other informations like it's physical description/properties (which includes whether it's a particle or not) is not yet known and it's because they don't reflect/emit radiations.

Dark energy - responsible for the accelerated expansion of the universe/space has almost similar problems as that of dark matter. Because in our everyday experience, the presence of light gives us the opportunity to gain information about an object and in the dark (absence of light) we get otherwise, we therefore have the word "dark" in dark matter and dark energy.

In our [previous article](https://hive.blog/hive-196387/@clinton19/could-motion-be-the-main-ingredient-for-our-existence), we discussed about how very important motion is in our universe, we showed that everything from subatomic to galactic scale is constantly in motion and that motion is responsible for the existence of almost everything in our universe, we also showed that rest is a relative concept - we need motion to define it. Before rounding up in the article, a question was raised and it was that, If we assumed we existed in a multiverse - universes with infinite possibilities, can there exist a universe where the reverse of motion - rest, was the main ingredient of existence ?

Well, the question is more difficult than it seems and i like the comment made by our honorable member, who happens to be a founder/co-founder of this community - stemsocial, and also a physicist - particle physicist, he is none other than @lemouth, and i quote

>That is an interesting question. I am tempted to say no, because I cannot imagine how this would work as I cannot see well how any composite system could form. But maybe this is my imagination that is too limited... ;)

Personally, i don't think anybody's imagination is limited, it's just that our universe to some extent made it seem that way (limited imagination) and it's probably because we reside in and constantly interact with it - our universe. The problem is somewhat similar to the problem of trying to visualize a higher than three spatial dimensions of space, it would be difficult because we are used to our common 3D space, which however is what our universe seems to be. Because it's difficult to visualize or that we don't observe it doesn't mean it can't be visualized.

Because motion seems to be fundamental for the existence of our universe, it can be considered a fundamental law of our universe. In a multiversal setting, the fundamental laws of  different universes can be different - theoretically. While we can't tell if such a universe (universe with rest as main ingredient for existence) is certain to exist, what we can do at least is to extrapolate how such universe could look like. To do this, we would need another assumption and it's that our current understanding of motion, especially it's definition (given in our [previous article](https://hive.blog/hive-196387/@clinton19/could-motion-be-the-main-ingredient-for-our-existence)) is not a universal concept but a multiversal one. Having established this, we then proceed and below are the very interesting properties of a universe with rest as main ingredient for existence.

# Absence of time

In our universe, even though time is considered a dimension like that of space, it still fundamentally defines change and changes always takes place in our physical spacetime, which implies the constant existence of motion (especially of different kinds). In a universe where rest (no motion) is dominant, time can be thought of to be frozen or non-existent. In such a universe, there can be no such thing as past and future. If at all there are going to be activities, then these activities are happening simultaneously - in the present.

# Ageless

In @lemouth's comment, he said and i quote

>I cannot see well how any composite system could form.

By composite systems, he means macroscopic objects like your pen, biological systems, galaxies, planets, solar systems, e.t.c.

Well, if there are going to exist composite systems, then formation isn't necessary, as formation requires motion and time. In such a universe - where rest is dominant, it could be that composite systems had no beginning or were never formed, that is, they had been and would continue to be in existence. From an overall perspective, this universe can be considered to be in a state of it's beginning and end simultaneously. Everything in it (if at all there are things in it) are either ageless or possesses an age that is undefined, all i'm trying to say is that such universe is eternal. 

Also, the constituents of this universe may be exotic - made up of things that can "only exist" in this kind of universe.

# Motion Mimicking (Relativity)

 In our universe, it was once believed here on Earth (in the past) that it was our sun that revolved around the our planet (Earth) instead of otherwise, why was it so ?

To understand why, let's use a common scenario, we all must have been in a moving vehicle before, in that moving vehicle when you look through the window, you notice that stationary objects like a tree is moving but in the opposite direction to that of your moving vehicle. This effect is due to relative motion but do you know that if you happened to have just come into existence inside the moving vehicle without the knowledge of relative motion, you would swear with your life that the tree was actually moving, this was what happened in the past.

This same phenomenon due relative motion can affect how we observe the universe dominant with rest, this is if such universe is observable.  If we observe a universe dominant with rest from our universe that is dominant with motion, we can have a false belief that there's motion in the universe dominant with rest. As matter of fact, the universe dominant with rest can falsely mimic the motion of any moving body but in the opposite direction.

# Darkness

Around the beginning of this article we discussed about radiations and how important they are, especially when trying to gain information from the object emitting/reflecting it, we explored it (radiations) to better understand this part of the article. In a universe where rest is dominant, radiation cannot move, even if it exists and so gaining information about what happens in such a universe from outside is "impossible". Even if you go inside, you would get destroyed into nothingness because you need motion to exist, likewise every other object that depends on motion for it's existence. This property of this universe is somewhat analogous to that of black holes, dark matter and dark energy and so therefore, this kind of universe can be considered a **dark universe**. This universe seems more deadlier than a black hole - objects from outside can get destroyed into nothingness.

What a dark and interesting universe, i hope you guys enjoyed it. As a sci-fi movie lover, i would love to see this kind of universe portrayed in a movie, if you happened to know a sci-fi movie that portrays this kind of universe you can refer me to it. Also, if you have any questions or things to add with regards to this article you are always welcome.

We thus conclude this article at this point, have a thoughtful day and see you next time.

### For further reading

[Black hole](https://en.m.wikipedia.org/wiki/Black_hole)

[Dark energy](https://en.m.wikipedia.org/wiki/Dark_energy)

[Dark matter](https://en.m.wikipedia.org/wiki/Dark_matter)

[Galilean invariance](https://en.m.wikipedia.org/wiki/Galilean_invariance)

Thank you all once again for stopping by to read my jargons and also thank you @juecoree, @lemouth and the @Steemstem team for your valuable supports.


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