Can we accept? That there are galaxies without dark matter.

“This Hubble image shows the stars of ultra-diffuse galaxy DF9, along with a series of background objects, mostly galaxies, located at much greater distances. DF9 makes almost a perfect line, at least in two-dimensional space, with previously identified dark matter-free candidate galaxies DF2 and DF4, suggesting, but not proving, a possible association."

"Credit: M.A. Keim et al., Hubble Space Telescope/ESA/NASA, Astrophysical Journal, 2026” (BigThink, Is it finally time to take dark matter-free galaxies seriously?)

The reason. Why ultra diffuse galaxies? Spin differently than they should. It can be in their formation. The galaxies have only a couple of stars. Normally, those galaxies involve more dark matter than usual. And some of the ultra-diffuse galaxies (UDG). Formed almost entirely of dark matter. Dark matter keeps those galaxies in their form.  But there are UDGs without dark matter. 

This means that there must be a weaker electromagnetic interaction between stars than usual. Or the spin of the galaxy is slow. The question is. What is the dark matter's role as a wave transporter? We know that wave. It cannot move in an absolute vacuum. So, is dark matter some kind of “ether”? Things that can transport wave movement. But itself be unseen? Or is there interaction between dark matter particles? And could that energy be the mythic dark energy? That means. Dark energy could have its source in dark matter. 

There are four possible galaxies. There seems to be no dark matter. Those galaxies. If they have no dark matter. That doesn’t prove dark matter non-existent. They prove that dark matter is matter like all other matter. It could be oscillating superstrings. When those superstrings move. They could form small whirls. That acts like materia. But the galaxy without dark matter supports a model. That dark energy source is in dark matter. And dark matter could have a particle form. 

The galaxy without dark matter seems very rare. The only known force that interacts with dark matter. It's gravity. The galaxy without dark matter suggests that there must be another force. That should transport dark matter away from the galaxy. The galaxy without dark matter. Tells. That. Dark matter should form similar structures to visible matter. Or at least dark matter should form some kind of nebulae in the universe. The idea that dark matter is not homogeneously spread. 

The universe is interesting. The point. There is no dark matter. That is interesting. If the only thing that affects dark matter is gravitation. The gravitational center. It should pack dark matter around it. But a galaxy that has no dark matter. Causes thoughts. That may be dark energy has its source in dark matter. Dark matter. It could have a similar evaporation process to visible matter. If dark matter has a particle form. It should have a similar evaporation process. 

As visible particles. This means that dark matter. It should send a wave movement. And another particle that this wave motion can affect is another dark matter particle. When we think about particle interactions. There are a couple of things that make interaction visible. The interaction must affect a large enough area. It can push the receiving particle. The interaction must stand. As long as it can affect another particle's behavior. 

But then what makes a particle visible? That is the size of the particle. The wavelength of electromagnetic radiation that a particle sends is the same as its diameter. This means. Particles must transmit radiation or wave motion. In wavelengths that we can see. If the size of those hypothetical dark matter particles. It is far different than well- or less well-known particles. That means. We cannot see that particle. The visible particle. It must send. Some radiation is between gamma rays and radio waves. Or it must send gravitational waves. That position in the electromagnetic spectrum. It is unknown. 

The problem with dark matter is this. Nobody has seen that matter yet. Dark matter is predicted to form in the same Big Bang as visible matter.  But it’s only a theorem. It’s possible that dark matter is formed in a different stage of the Big Bang than visible matter. This causes an interesting idea. 

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Key Takeaways

Less than a decade ago, the first allegedly dark matter-free galaxy, a dwarf galaxy on the outskirts of the NGC 1052 group (NGC 1052-DF2) was identified: a seemingly faint, massive, ultra-diffuse galaxy.

An enormous controversy then erupted, as different methods of measuring its distance led to vastly different estimates of its velocity dispersion, which led to vastly different implications for its internal amount of dark matter.

We’re now up to four seemingly dark matter-free galaxies, but three of them are all in the same location: the outskirts of the NGC 1052 group. Are these truly dark matter-free galaxies? Or did we simply get their distances grossly wrong?

(BigThink, Is it finally time to take dark matter-free galaxies seriously?)

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What if dark matter or most of dark matter formed just before visible matter? That thing could explain dark energy. That means. Outside the universe and galaxies could be structures. That's like the Oort Cloud. The brightness of galaxies. That can cover those structures below it. 

This means that. The dark matter surrounds the universe like the Oort cloud surrounds the solar system. Those clouds could cause gravitational interaction. That pulls the entire universe outward. If there is no resistance outside that hypothetical dark matter disk. 

The model is that. The disk surrounds the universe. And orbits it. That means it could pull energy from the universe faster than it should. The reason for that is this. The universe. It's the only higher-energy object in this disk. The space outside that “Universe’s Oort Cloud”. It is at a lower energy level. That causes a reaction. There, that disk delivers that energy into outer space. 

The inner layer of that hypothetical disk. It is at a higher energy level. And its outer layer is in a lower energy level than the universe. This causes a situation. There, the energy travels straight through that material disk. Because energy travels in one direction. That energy pushes the material disk away. And that pulls the universe and its edge behind it. In some models. There is a plasma shockwave that surrounds the universe.

“The distance from the Oort cloud to the interior of the Solar System, and two of the nearest stars, is measured in astronomical units. The scale is logarithmic: each indicated distance is ten times as far out as the previous distance. The red arrow indicates the projected location, in 2025–2027, of the space probe Voyager 1, which may reach the Oort cloud about 300 years later. “ (Wikipedia, Oort cloud)

Kuiper Belt and Oort Cloud. (Wikipedia, Oort cloud)Those images introduce how large it is. That Oort cloud is. And it’s possible. That is the galaxies and the universe. That structure. It could be far larger than galaxies and their halos. Or it could be larger than even the universe. 

Maybe the energy minimum. In that plasma ring or plasma bubble. It is. A little bit higher than inside and outside it. Outside that plasma wave. That energy minimum is lower than inside the plasma ball. This thing causes energy to flow out from the universe. And could there be a similar effect around the galaxies? The energy vampire. Very low energy objects. That surrounds galactic halos. These kinds of objects. That orbits the galaxy. They can also pull energy out from that halo. And then transfer it out of that structure. 

This plasma bubble is similar to the heliopause. But its size. It is far larger. Similar plasma bubbles. They surround each galaxy. That causes an idea. That maybe. Dark matter could be positioned. In the bubbles that surround galaxies. If the matter is, or just outside those bubbles. And its energy level is lower than the energy level of the galaxy. That matter will pull energy into it. And if that energy continues its journey. That will not be seen in the plasma bubble. 

Those bubbles cause reflection. That reflects radiation back to the galaxy and the universe. This reflection causes. That we cannot see dim objects and dim matter that is between galaxies. So, in this model, the difference between energy minima is. In and outside the universe. That is the thing. That causes the universe's expansion. 

Could that thing explain? Why can't we see Planet 9? 

And by the way. The reason. For. Why can't we see Planet 9? It can be just outside the heliosphere. If Planet 9 exists, and it’s at a lower energy level than the shockwave that forms at the point. The particle flow from the sun. Impacts particles that come from other stars. If that planet’s energy level or temperature is lower than this plasma's. That plasma’s shine. Covers that planet’s existence. 

If energy travels to that planet. But its reflection cannot enter the solar system. Because. It's too weak. It cannot travel through that plasma bubble. Because the plasma bubble’s energy level is higher than that of reflection. That thing means that. The reflection from that hypothetical planet simply cannot reach the telescope on the ground. 

https://bigthink.com/starts-with-a-bang/dark-matter-free-galaxies/

https://en.wikipedia.org/wiki/Oort_cloud

https://en.wikipedia.org/wiki/Planet_Nine

https://en.wikipedia.org/wiki/Ultra_diffuse_galaxy