What if dark matter doesnt exist

AUG 17, A new study published in Physical Review Letters presents evidence for the creation of matter and antimatter from energy Written By: Matthew Lundy. SEP 23, Mining Metal From Microbes in Space. Microbes can be used like little factories to churn out important or valuable chemicals.

Now researchers are learning ho OCT 05, Tagging is how all of our articles, products and events are related to each other. You can explore tags individually by clicking on them, or by searching for them on our website.

To learn more, click here. Upcoming Webinars. Time and time again, the predictions made by scientific luminaries like Einstein and Newton have been confirmed through experimentation. Most scientists currently believe the iron grip of gravity is augmented by dark matter, an invisible material that makes up about 85 percent of the universe.

Interest in dark matter can be traced back to the s when Swiss astrophysicist Fritz Zwicky was unable to explain the faster-than-expected rotation of galaxy clusters. Based on what we understand of the underpinnings of gravity, the force should be proportional to mass. When these stars further evolve and die, which likely means a supernova for most of these early-generation stars, the ejecta from these stars moves so quickly that — again, without dark matter — they become gravitationally unbound from the remaining material that collapsed to form these stars in the first place.

Unlike our Universe, where material that was fused in one generation of stars gets recycled into the next generation, this first generation of stars might well be the end-of-the-line without dark matter. The Crab Nebula, as shown here with data from five different observatories, shows how material gets On smaller cosmic scales, that means that the only solar systems that exist will be enormously simplistic. Without the ability to recycle the elements from one generation of stars into the next, that means that you won't have the heavy elements needed to form rocky planets in your protoplanetary disks.

Without large abundances of carbon, nitrogen, oxygen and even heavier elements like silicon, phosphorous, copper and iron, not only would life be an impossibility, but the only planets you could form would be gaseous worlds composed of hydrogen and helium.

Moreover, without these heavier elements to help cool proto-stars as they form, the stars that exist will be much fewer in number but larger in mass. In a Universe with no dark matter, the stars and planets would be overwhelmingly different from the The average star would be much more massive than our Sun, while typical planets would only be gas giants, without heavy elements capable of forming rocky cores.

On the scales of Milky Way-like galaxies, there would still be large collections of mass that formed disks, and those disks would still rotate and be littered with stars. But without dark matter, these galaxies would exhibit two major differences from the galaxies we see today. The fact that the overwhelming majority of galaxies have flat rotation curves, where the outer objects move with the same speeds as the interior ones, is another consequence of dark matter in our Universe.

A galaxy that was governed by normal matter alone L would display much lower rotational speeds in However, observations indicate that rotational speeds are largely independent of radius R from the galactic center, leading to the inference that a large amount of invisible, or dark, matter must be present.

What isn't greatly appreciated is that without dark matter, life as we know it would not exist. On larger cosmic scales, there would be dramatically less structure overall. In a Universe without dark matter, there is no unseen "skeleton" to the cosmic web; instead, structure forms based on the strength of normal matter alone. This means that instead of a cosmic web, where you wind up with galaxies dotting the filaments that connect the great clusters of the Universe together, you'd just wind up with isolated islands of mid-sized galaxies, with not much else.

Sure, some galaxies would still group and cluster together, but there would be far less of them that do so in a Universe without dark matter. Observations of the large-scale structure of the Universe would be enormously different by every measurable metric, from weak and strong gravitational lensing signals to galaxy group collisions to the power spectrum of the Universe.

The formation of cosmic structure, on both large scales and small scales, is highly dependent on how The structures that arise, including galaxy clusters and larger-scale filaments, are indisputable consequences of dark matter. Predict an expanding universe and provide an acceptable fit to measurements of the distance-redshift relationship.

This constrains the homogeneous cosmological solution of the alternative theory [c. Provide a satisfactory fit to measurements of both the CMB fluctuations and the large-scale structure.

Gravity is what it is and does what it does. Such ideas are pre-big bang cosmology. Worse, if space is flat as it seems, space has definitely no center but is infinite in all directions. Simple as that. Peace and be well! Earth and Moon attract each other. There is no action at a distance. This means that the vacuum is influencing itself in this propagation. The vacuum could therefore self influence and clump together, given the right conditions.

In doing so, it would appear as if some other mass was acting locally on the vacuum. The vacuum can act on itself giving the same effect as the presence of additional mass would. Takes too much effort to untangle that, suffice to say that in modern cosmology the vacuum energy density is dark energy. I believe that gravity gets altered when objects in a vacuum are close enough to have their gravitational fields entangle with each other.

Nothing exists. You will realize this eventually. And space being flat means all the energy and the work of the universe bot sum to zero. The universe is a big fat zero. What I dont undestand is how this disproves relativity, because EFE is just a many body solution rather than very simple two body as per Newtonian gravity solution.

What I think this data may show is that while we can think of the universe as homogenous at very large scales, it is a very bumpy structure at the scales of galaxies and clusters. Dark matter and dark energy is just what we use to describe the positive and negative curvatures that otherwise dont interact with matter, the stuff we see at near zero curvature aka special relativity.

Just as electromagnetism can have external fields that influence charges, so must our theory of gravity. Aka we must generalise to many body solutions, not just the simplistic two body solution for the full picture. So the stuff inside black holes would be mostly dark matter, the stuff right outside mostly matter, and the event horizon being the light-like event at 45deg mark.

Think of these as inner black holes, next we have dark energy which would be the outer black hole that we are in, the light-like event being vacuum energy. Matter is the time-like events that must lie between them both, dark matter and energy are the space-like event that can only effect matter via overall rotation, which is what we see as gravity and expansion.

But from their perspective, we are imaginary and invisible they are real. If you can quantify that meaningless verbiage, predict something seen and get it peer reviewed published, you may have gotten something — besides apparent confusion. The simplest way. This is because existence cannot come from non-existence. Only a spontaneous dynamic process, neither existence nor non-existence, could come from nothingness without failing the rule of non-contradiction. So, everything is made of this dynamic spontaneous process, we should call Time.

Every point of the Universe is new at every moment, which is what Time does. If space is flat the expansion is adiabatic free and spontaneous, no specific impetus needed to start it. And under that process under inflation specifically it produces habitable pockets with structures of a cosmic web of gas and galaxies which is generated by okay, quantum physics fluctuations at an earlier stage of inflation. The universe was created from a logical operation and evolves according to simple logical operations … Maths can follow that….

We may see the standard meter all at once in a moment of perception. The universe has no perception, only interactions. For the universe to perform some interaction between the two ends of the standard meter, it takes time. In other words, for the universe, both ends of the standard meter are not at the same moment. Actually, no two points in the universe are at the same moment.

And the universe is the final judge in the matter. Spacetime is but a concept we created in order to keep doing physics. Since moments are a human concept it needs an observer to designate a moment to each end of the meter in their own mind.

Why is the existence of space dependent on how you consider it? IMO space consists of something ie quantum field or quantum foam etc, and that an empty space or void is only a mathematical concept. Our knowledge of the universe requires that we be acutely aware of both. Marcel-Marie, Even if it was true that superstition such as philosophy would be involved by way of math or handwaving, you yourself admit that we need physics science.

But philosophy has been resorting to handwaving for millenniums — often supporting other nonsense like religion — since unlike science it has no means to discern facts. Which brings me to math. Science use math as a tool that like statistics helps quantify obsrevation and theory, the more important tools.