We can see only 15% of the material of the universe. And the rest is dark matter

   

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We can see only 15% of the material of the universe. And the rest is dark matter

Why spotting dark matter is interesting? 

Mostly the universe is invisible to us. We can see only 15% of the material of the universe, and the rest is so-called dark matter. The thing that makes dark matter interesting is that 85% of the universe is consisting of dark matter. The dark matter is invisible to us, and we know the existence of dark matter only because of its gravitational interaction with other material. 

So the gravitational interaction is speculation. But because dark matter affects material, that means that also material should affect dark matter, but only 15 % of the material of the universe is invisible dark matter. So the greatest effect in the universe is causing the thing, what we cannot observe except the gravitational effect.

There are many theories, what dark matter can be. But without visual contact, we cannot find out the form of the dark matter. There is a possibility that the so-called "hot" dark matter is fermions, electrons, and quarks, but the most suggested form of the large scale of neutrinos is the thing, that might be mainly part of the "hot" dark matter. But the thing is that most of the dark matter is the "cold dark matter". The cold dark matter is the thing that is more mystic than the "hot dark matter". 

The dark matter has one similarity with the black hole. Both things are things, that are invisible to us, and they are interacting only by their gravitation. Many people think that we are getting observations from black holes, and that thing is wrong. All observations from black holes are from the material disk around the black hole, where happens the most highly energetic reactions in the universe. 

But the black hole itself pulls all material and radiation in itself. So there is a possibility that the dark matter is a large group of quantum size black holes, as I have written recently. 

And sometimes there is introduced that the dark matter is the particles that are in the hyper-energetic layer, which means that their rotation speed is too high that the cosmic radiation cannot affect them. That means that the quantum field of that kind of material is in the form, that the radiation cannot interact with those particles. One example is that the hyper-energetic particles might have so small quantum fields, that when the particles of the cosmic radiation just have no time to interact with those particles. 

But in some other theories, those dark matter particles are the ghost particles, which are forming when the speed of tachyons is slowing. Because of the speed of tachyons, what are theoretical particles is higher than the speed of the light cannot slow below the speed of the light, that thing means that those particles are existing in their tachyon universe. 

They cannot slow their speed, because they cannot transfer their energy to other particles, and that means they are not able to come in our universe. And that means that tachyons are the dark matter or their energy impulses that are forming when those particles hit the quantum field that surrounds our universe or the dimension where we are living. Tachyons are hypothetical faster than light particles, which means that their existence is not confirmed. 

If those particles are existing they cannot interact with other material, because the interaction time is too slow. And there is a possibility that tachyons are the key to dark matter. If there is a large mass of tachyons they can interact with normal material through the quantum fields by gravity. So in this theory gravity interacts through the light wall that denies us to cross the speed of the light, and the same thing denies that tachyons cannot come to our universe. 

The quantum field denies that those particles cannot come into our universe. But when the tachyons are hitting in the quantum field, they send the energy effect to the universe, where we are existing. The thing is that the tachyons are faster than light, and they cannot slow, because the quantum field, what surrounds the material is pumping more energy to that thing. So that means that the dark material would be the echo from the tachyon universe. 

Sources:

Dark matter: https://en.wikipedia.org/wiki/Dark_matter

https://phys.org/news/2020-09-dark-reveals-hidden-materials-properties.html

Tachyons: https://en.wikipedia.org/wiki/Tachyon

Image: https://www.livescience.com/65208-fuzzy-dark-matter-evidence.html