What is Dark Matter?

What is dark matter? This is an important question in physics and astronomy. The answer to this question will reveal many mysteries regarding the universe.

[jaysmythe]

Anyone else think dark matter is a fudge to pretend that the current scientific view is correct. If you've got 95% of the universe missing perhaps the laws of physics need re-evaluating.

[Pookey]

Maybe spacetime is superfluid and moves through matter like it's not even there. If so, every tiny partical spin, takes place in a tiny vortex of spacetime. Two particals make a bigger and faster swirling vortex, increasing entropie and slowing down time. Einstein suggested that matter curves spacetime, but maybe we dit not understand. Matter could be the catelist for spacetime. There is something wrong with gravity!

[S_Editzz]

I might have an explanation for dark matter but i cant explain it here
I need my nobel prize damn it!

[michaelkahn]

Alternative Explanation of Dark Matter and Dark Energy - Newly suggested model of Universe can easily explain Dark Matter and Dark Energy

Einstein’s theory of General Relativity states that spacetime is curved by the presence of mass. This curvature influences the motion other objects with mass and gives rise to gravitation. Thus, gravity is a result of geometric features in spacetime.

However, we also observe gravitational effects – curvature of spacetime – in areas without any detectable mass. This has given rise to the concept of dark matter, which is matter that does not interact in any detectable way with normal matter, except through gravity. So, there is some large quantity of dark matter scattered throughout the universe, which curves spacetime and causes gravitational effects just like normal matter, but we cannot see or detect it with any known method.

An alternative theory to the identity of dark matter is proposed – it is not matter at all, but rather an intrinsic curvature of spacetime. In other words, spacetime is not naturally flat. Even in the absence of matter, we observe some inherent curvature of spacetime.

So, the question is now – why is spacetime naturally curved? Why is it not flat in the absence of mass?

The universe is 4-dimensional, with 3 spatial dimensions and one dimension in time. Rather than consider time as a linear dimension, we can consider it as a radial one. Therefore, rather than describing the universe with a Cartesian coordinate system, we describe it with a 4-dimensional spherical coordinate system – 3 angular coordinates, φ1, φ2, φ3, and one radial coordinate in time, t. We live on the 3-dimensional surface of a 4-dimensional bubble which is expanding radially in time. Thus, the Big Bang represents t=0, the beginning of time.

The crucial point is that the expansion of the universe is not homogeneous in all directions. The expansion rate at one point on the bubble’s surface may differ slightly from another point near it. The universe is only roughly spherical in 4 dimensions, the same way that the Earth is only roughly spherical in 3 dimensions. The same way we observe local mountains and valleys on the surface of Earth, we observe local “mountains” and “valleys” on the surface of the universe bubble. The inhomogeneity of the expansion of the universe has given rise to natural curvature of spacetime. This natural curvature causes the phenomenon of “dark matter”.

“Valleys” in spacetime pull matter in, similarly to the warping of spacetime of massive objects. So “dark matter” is really “valleys” in spacetime that are expanding slower than the regions surrounding it. These valleys tend to pull matter in and create planets, stars, and galaxies – regions of space with higher-than-average densities of mass. Conversely, “mountains” in spacetime will repel matter away, an “anti-gravitational” effect, which gives rise to cosmic voids in space where we observe no matter.

Each point on the surface of the universe bubble traces out a time arrow in 4-dimensional space, perpendicular to the surface. These time arrows are not parallel to each other since the universe is not flat. This causes points to have nonzero relative velocity away from each other. It is generally accepted that the universe is expanding faster than observable energy can explain, and this is expansion is believe to be still accelerating. The “missing” energy required to explain these observations has given rise to the theory of dark energy. The time dilation caused by non-parallel time arrows can be proposed as an explanation for dark energy. Alternatively, dark energy is real energy coming from potential energy gradients caused by non-parallel time arrows.

As a sanity check, we can calculate the expansion rate of the universe based on the universe bubble model. Since the radius of the universe bubble is expanding at the speed of light in the time direction, it increases at 1 light second per second. Therefore, the “circumference” of the 3-dimensional surface increases by 2π light seconds per second, or about 1.88*10^6 km/s. This expansion is distributed equally across the 3-dimensional surface, so the actual observed expansion rate is proportional to the distance from the observer. At present, the age of the universe is estimated to be 13.8 billion years, so the radius of the universe bubble is 13.8 billion light years, or about 4233 megaparsecs (3.26 million light years to 1 Mpc). Thus, we can calculate the expansion rate of the universe, per megaparsec from the observer, as:

Expansion rate =

[JoshVandever]

We seem to have problems with mass in physics.

[nalinim.s]

I have a hypothesis, gravitons are responsible for the energy possesed by planets , gravitons can also be held responsible for the formation of blackhole, say it as holes in space time, which mainly compromises of empty space with no gravitons or less gravitons, according to one of the principle suggested by me universe tends to reach a state of equilibrium, as a result large rush of gravitons gets to the empty space creating strong gravity, thus forming black hole

[shawns]

There is an elephant in the room explanation for "dark matter". Most people don't know that Einstein said that singularities are not possible. In the 1939 journal "Annals of Mathematics" he wrote "the essential result of this investigation is a clear understanding as to why the Schwarzchild singularities (Schwarzchild was the first to raise the issue of General relativity predicting singularities) do not exist in physical reality. Although the theory given here treats only clusters whose particles move along circular paths it does seem to be subject to reasonable doubt that more general cases will have analogous results. The Schwarzchild singularities do not appear for the reason that matter cannot be concentrated arbitrarily. And this is due to the fact that otherwise the constituting particles would reach the velocity of light"
He was referring to the phenomenon of dilation (sometimes called gamma or y) mass that is dilated is smeared through spacetime relative to an outside observer. This is illustrated in a common 2 axis dilation graph with velocity on the horizontal line and dilation on the vertical. It shows the squared nature of the phenomenon, dilation increases at an exponential rate the closer you get to the speed of light.
General relativity does not predict singularities when you factor in dilation. Einstein is known to have repeatedly spoken about this. Nobody believed in black holes when he was alive for this reason.
Wherever you have an astronomical quantity of mass, dilation will occur because high mass means high momentum. There is no place in the universe where mass is more concentrated than at the center of a galaxy.
According to Einstein's math, the mass at the center of our own galaxy must be dilated. In other words that mass is all around us. This means that there is no valid XYZ coordinate we can attribute to our own galactic center, you can't point your finger at something that is smeared through spacetime. Or more precisely, everywhere you point is equally valid.
This is the explanation for the abnormally high rotation rates of stars in spiral galaxies (the reason for the theory of dark matter) the missing mass is dilated mass.
According to Einstein's math, galaxies with very, very low mass would not have dilated mass because they do not have enough mass at the center to achieve relativistic velocities.
To date, this has been confirmed with 5 very low mass galaxies all showing no signs of dark matter, in other words they have normal star rotation rates.
There is no black holes or dark matter, relativity explains the phenomenon we see.

[xavierlopes]

Dark matter is the dielectric, as magnetism is spacial and manifesting.

[RahulSingh-bwrk]

I think most probably our physics is pretty basic and we don't have enough understanding of how the universe works or even what it is. We have built our physics by only observations and experiments conducted on Earth which might not be universal. And this physics have been proved wrong many times with many new theories getting put forward.

[syedarman]

What about blackholes? We can't directly see them and they also have a very high gravitational force

[fireheart]

How does it have mass when it doesn't even interact with electromagnetic waves?

[antonybullock]

85%. Try 26% and about 70% for dark energy with 4% for the physical universe of particles for matter and energy. Who the fuck does your fact checking.

[vp]

In your video please but subtitles and keep ai voice

[arielamejeiras]

Dark matter matters.

I'll see myself out...

[ivanzdjelar]

Oko 68% tamna energija, oko 25% tamna materija i ostalo je klasična materija. Tako bar tvrde naučnici danas

[trollllort]

\[ D(x, y, z, t) = \Phi(\rho, \Lambda, \psi) \]

Where:
- \( D(x, y, z, t) \) represents the dark matter density or effect at spatial coordinates \((x, y, z)\) and time \(t\).
- \(\Phi\) is a function that describes how dark matter interacts with the universe.
- \(\rho\) represents the mass density of dark matter.
- \(\Lambda\) is the cosmological constant, reflecting the influence of dark energy.
- \(\psi\) is a potential function representing the gravitational effects of dark matter.

[muster]

This galxy all are our Earth. 😊 once up on time. Jesis told as heaven and Earth will no more exit. But His word never ever fails. So that i belive 😊

[peterkavanagh]

The atmosphere or the light speed defines the dark matter it can change between universes and I. The clusters areas . Thmass allows the
Ilky way vindof be ailky way that amonut of syars remain strs I that clusters . If cintant the matteright be that drift. Itmay be better to switch off most artificial lighting and new wifi . These are not experiments the people buili g your food chains. A beter wat is off

[ammarkhan]

Allah made angels and devils, and it is mentioned in the Quran that the devils are 9 times more numerous than humans, while angels are 9 times more numerous than devils. However, we cannot see them. We can conclude that these invisible beings could be made from a type of matter. We can name it dark matter, white matter, or invisible matter. It is still unknown to humans which type of matter God used to create them. I think that what we are looking for to explain it more in detail scientist need to study deeper in religious artefacts so they can describe it properly.

If we combine science with religious facts and study them together that would be the answer what we are searching for as a human being

[subhasishdas]

Krishna means black. Lord Krishna is God. Krishna is dark matter.