What percentage of the universe is not dark matter or ordinary matter?
4.3% of the universe (~45 Billion Light year diameter) is Planets, Gases and Such. Dark Matter (WMP, or Weakly Interacting Mass Particle) is invisible. If my math is correct, (and i did it on a hitachi supercomputer) the universe should weigh around... 790 centillion centillion centillion centillion centillion centillion centillion centillion centillion centillion centillion centillion centillion centillion centillion centillion centillion centillion Tonnes, to the 947,304,691,120,161,109,425e+4964546546516548897984351th Power! I Guess About 74 followed by trllions of trillions of trillions of digits, pounds thats heavy
3 people found this useful
I just read an article from Hubble site on the theoretical idea of dark energy, it implies that due to the dimming of light emitted contrasts of supernovae from different time… periods such as 1 2 3 4 5 billion years apart they theorized that the invisible must be pulling apart the mass of universe because the dimming from these supernovae are not the same and they should be. Well here is what i think, if anyone believes that the invisible, dark matter, space what ever you want to call it, is responsible for expansion of universe, you are nuts. First of all, nothing gives you nothing. If one is to believe that dark space is energy then the nuclear age is a myth and all scientific formula need thrashing or perhaps there must be alternate ways of starting universes. What! If one is to accept the idea of dark energy then one must forget the laws of physics such as the laws of conservation and thermodynamics. Maybe if the nothing exists and it is energy then it would explain all the ghost stories I have heard. **** The previous paragraphs demonstrate a profound lack of understanding of the nature of science. The space within our Universe IS expanding. This is as much a fact about our Universe as gravity. Don't like this fact? Too bad -- you'll just have to move to a different universe, because it IS occurring here, no matter what you may think of it. The laws of General Relativity show that matter within our Universe should slow down this expansion. The only question is HOW MUCH is the mass in our Universe slowing it down. Ever since Hubble Expansion was first discovered over eighty years ago, we've noted that the rate of expansion seems to be constant over many billion years, so the amount of mass in our Universe (more precisely, the DENSITY of mass in our Universe) is very close to almost no slow-down over time. Again, don't like this fact? - then you'll have to leave this universe. > if anyone believes that the invisible, dark matter, space > what ever you want to call it, is responsible for expansion of universe, you are nuts. Dark matter and dark energy are completely separate entities. One of them (dark matter, since it is gravitational) would cause the expansion of our Universe to slow down. It's dark ENERGY that's causing the expansion rate to speed up. In the 1990s, we FINALLY developed a "standard candle" (look it up) to precisely measure the rate of expansion of very distant galaxies -- ie, ones that were part of expansion many billion years ago. With this, it was hoped that we could FINALLY see how much the mass in our Universe was slowing down the expansion of the Universe. What we found was that the rate of Hubble Expansion has NOT been decreasing over time -- it has been INCREASING. What's causing the rate of Hubble Expansion to increase over time? WE HAVE NO IDEA!! Some form of energy, about which we have no clue, is causing the rate of expansion of the space in our Universe to go faster over time. We call it DARK energy precisely because don't understand it. > If one is to accept the idea of dark energy then one must forget the laws of physics This, at least, is correct. To understand dark energy -- whatever it happens to be -- we WILL have to forget the laws of physics AS WE NOW UNDERSTAND THEM. Believe it or not, our understanding of our Universe -- what we call the "laws" of physics -- CHANGES as we acquire new information. 100 years ago, we didn't even know galaxies existed, let alone that we were at the periphery of one, let alone that the space between our galaxy and others was expanding, let alone that the rate of this expansion was increasing over time. Each of these concepts -- and hundreds of others -- were uncovered due to well-done experiments, and forced us to re-write the "laws" with which we use to deal with the Universe we find ourselves in. > First of all, nothing gives you nothing Actually, we now know, as an absolute fact, that empty space, even if completely devoid of matter, is teeming with energy. And it does so with no violation of conservation of energy whatsoever. Don't like this fact? I think you know the answer.
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%, da…rk 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.
We know that dark matter exists because it got gravity, though it is invisible. It hold galaxy and Universe. There is a theory there many other parallel universe outside our u…niverse and dark matter holds those universe up and some scientists says that dark matter are just mass of the matter of the parallel universe. It sounds crazy but that is the Law of Physics. However there is not exact explanation of what dark matter really is, so there are still Noble Prices for those who can come up with a reasonable explanation
We're not certain that "dark matter" even exists, or what the proportions of "normal" to "dark" matter is. I have read some articles saying that the ratio might be as much as… 20-1; 20 parts dark matter to one part normal matter, but these are predicated (I believe) solely on rough calculations based on the perceived mass of the galaxy and its apparent rotational speed. There appears to be a great deal of speculation and estimation in these calculations. One important trait of a scientist is to NOT GUESS about things that we don't know, and to admit the boundary between the known, the believed, and the unknown. Even if the current hypotheses about dark matter and dark energy turn out to have some basis in reality, we will certainly be surprised by the truth when we finally learn it.
Dark matter is something that scientists can't really explain yet. Normal matter is everything that you see around you. Scientists know that dark matter exists because the pat…terns in gravity and the patterns in matter don't match. For this reason, they assumed that there was "dark matte", a type of matter that cannot be detected as easily as matter.
Roughly 70% of the Universe is dark energy. Dark matter makes up about 25%. The rest, everything on Earth, everything ever observed with all of our instruments, all normal mat…ter - adds up to less than 5% of the Universe. That is, with the knowledge and the proof that both dark energy and dark matter exist rather than inferences.
Dark matter is matter of an unknown type. It is known to exist, due to its gravitational influence, but it is not known what it is made of. There is at least 5 times as much d…ark matter than "normal" matter.
There is about 5 times more dark matter than "normal" matter (the matter we are familiar with). The percentages are estimated as follows: the Universe is made up of 4% normal …(a.k.a. baryonic) matter, 23% dark matter, and 73% dark energy.
It turns out there is several times more dark matter than normal ("baryonic") matter.
It is believed that about 4% of the mass in the Universe is normal matter. About 23% is dark matter (matter of unknown composition), the remainder being something even more my…sterious called dark energy. I suggest searching the Wikipedia for "dark matter" and "dark energy", for more details about both.
It is estimated that the matter in the Universe is divided up as follows: 4% "normal" matter (this is the part we know best), 23% dark matter, 73% dark energy. We don't know m…uch about dark matter, but it is clear that it does exist (it manifests itself by its gravitational attraction, so it can't hide completely). We know even less about dark energy.
4% normal matter 23% dark matter 73% dark energy
Yes, Dark matter and Dark energy makes up 95% of this Universe.
Depends what you mean by "a lot." The gravitational effect of dark matter -- whatever the stuff happens to be -- is about six times greater than that of all the visible matte…r in our Universe.
Dark matter is everywhere, there really is no place that has the most dark matter.
In Big Bang Theory (scientific model)
Dark matter is actually Melanin. Melanin is the pigment that givesus color. Black people have 12 Melanin centers in their brain,while white people only have 2. Melanin allows …us to covert theSun's light waves into Sound waves, which gives the universe itsshape and us the ability to shape the universe through the law ofvibration.
About 95.7% of the universe is dark matter, and the remainingpercent (4.3%) is made of normal matter, plants, gases and such.