I dont know correctly but it may be most of the galaxy I think so!
In reality we don't 'know' but our best understanding is;
Ordinary matter: ~4.5 %, dark matter: 23%, dark energy: 72%.
Reputedly 80% of this 23% dark matter is cold dark matter and 20% is hot dark matter.
It has been said that "dark matter.... makes up more than 80% of the matter of the universe." but that is a common misunderstanding; But we MAY say; up to 96% of the mass-energy in the universe is 'dark'.
We don't know what dark matter is, but in fact it only means it does not have an easily detectable 'electromagnetic cross section' so it could be electrons/ions plasma, which has a refractive index of 1.
Plasma is the most common type of matter in the universe
The universe is currently expanding at a rate of approximately 74.3 kilometers per second per megaparsec. This is known as the Hubble constant, a measure of the rate at which galaxies are moving away from each other due to the expansion of the universe.
"Dark Matter" is currently only a mathematical concept, a "fudge factor" thrown into some calculations to make the numbers work out. We have no idea if "dark matter" really exists, how it would affect the universe, or how it might be detected or manipulated. It's all guesswork, and all the scientists have conflicting guesses. For myself, I suspect that there are some fundamental things that our theories do not yet understand, and that in the future, we'll discover that "dark matter" will prove to be nothing at all.
The simplest answer is: Everything does. One possible definition of 'Universe' is: All of time and space and everything in them.
The number of protons in the Universe is estimated to be about 1079 or thereabouts. A very large number. The existence of electrons and neutrons does not alter this number very much. This was worked out in the 1930s by Arthur Eddington, from fundamental principles though recent ideas may have altered this number slightly, and the basis for it. Recent work on effects abroad in the Universe are firming up to support the idea that there are a couple of other sources, yet to be identified with certainty, called Dark Matter, and Dark Energy. Taking reasonable estimates for these, current numbers are that Ordinary Matter is about 4.6% of the material, Dark Matter another 23%, and Dark Energy about 72%. The Dark components are made of sub-atomic particles of which our present knowledge is very uncertain. These outnumber Ordinary matter by some 20 to 1, but that only adds another 1 or so to the exponent of the Eddington Number of 1080.
Dark matter is everywhere, there really is no place that has the most dark matter.
The most common type of energy/mass in the Universe is in the form of dark energy, followed by dark matter. Only about 4% of the Universe is in the form of "normal" (baryonic) matter. If it is specifically to this matter you refer: the most common state of matter is plasma, found in stars.
Most matter in the universe exists in the form of dark matter and dark energy, which are currently not fully understood by scientists. These two components make up the majority of the universe's mass-energy content, with ordinary matter (protons, neutrons, electrons) making up only a small percentage.
NeptuneSaturnJupiterThe Sun and most stars.The Milky Way GalaxyAny galaxy for that matter,The Universe.
If we are talking about normal matter, as opposed to the dark matter, that would be plasma.
Atoms make up most matter around us. In the Universe in general, it seems that atoms make up about 4% of the mass of the Universe. The remainder of the Universe mass is dark matter and dark energy - both of unknown composition.
Dark energy is believed to make up about 73% of the mass of the Universe; dar matter about 23%; and normal matter - the kind we know most about - about 4%. In the case of normal matter, most of it is still in the form of hydrogen.
Current theory states that it's "dark energy".
most of the mass in a cluster of galaxies is invisible, which provides astronomers with the strongest evidence that the universe contains a great amount of DARK MATTER
most of the mass in a cluster of galaxies is invisible, which provides astronomers with the strongest evidence that the universe contains a great amount of DARK MATTER
Plasma. That's ignoring "dark matter", because we don't yet know what that is.
The universe is around 70% dark energy (a.k.a. empty space). The rest is mostly dark matter, with a few percent for ordinary matter. That is the current scientific model.