My conversation about dark matter

"Dark matter — non-luminous material in space — is understood to constitute 85 percent of the matter in the universe. Unlike normal matter, it does not absorb, reflect, or emit light, making it difficult to detect.
Physicists are certain dark matter exists, having inferred this existence from the gravitational effect dark matter has on visible matter. What they are less certain of is how dark matter interacts with ordinary matter — or even if it does." 

How do they give such a name for something they don't know exits. Everything said doesn't qualify it to be classified as matter.

The name matter, as we know of, is made of well known atoms which are then made of sub atomic particles: protons, neutrons, and electrons. I don’t want to go deeper than that for now. Scientists believe a different kind of matter can exist. If this is true, then an entirely new field of study needs to be established. Until then, naming them in their early stages needs precaution.

The other belief is the instruments that are being newly developed measuring visually undetectable signals ahead of researches. I still think it’s too early to speculate the outcome.

Anything can interact weakly, or not, with a particle. If one cannot determine what dark matter is made of, how can it qualify as matter? The name, for what scientists believe exists is very controversial. They know it exists. Vacuum exists too for that matter, but it’s not matter. Vacuum can also weakly influence matter.

I’m not in a position to scientifically prove my hypothesis, but I believe it should be considered in the scientific researches.

I think the space the universe expands into can't be anything other than vacuum. This should mean there's plenty of empty space. Which in turn means the vast empty space may account for the majority of the volume of the universe due to bits and pieces of empty spaces between, for example galaxies, and planets. This simply means it has it's own force of suction that devoured most of the matter since the big bang. If this is what the instruments detect as interacting with matter deep inside the earth, then is it appropriate to call it dark matter? 

To recap on my conversation, I want to stress the significance of my attempt to explain what dark matter isn’t. It’s not matter. My firm belief is, it has something to do with the curvature of space. Deep into the cosmos, the complexities of space curvatures involving galaxies,  stars, planets and black holes, may have created a delusion of gravity and space curvatures as a barrier to the path of light as if it is caused by dark matter. This opens up a new question: What is the difference between gravity and dark energy?

One more point I would like to make is, the new phenomena that emerge as the universe gets older. One of them is the galaxy formation that wasn’t evident long after the Big Bang . This maybe because, as the universe expands into the empty space(vacuum), and the entropy gradually loses strength, more space is being created between stars thus causing the curling up of their trajectories. This is in an attempt to find a corrective response to the availability of more space, and as a result, the expanding of the universe, including other encounters whenever there’s a new feature appearing as the universe ages. The debacle around the existence of dark matter and dark energy is one of those newly created issues whose true understandings need to be resolved.