how much is the universe dark matter
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Dark matter The standard model of cosmology indicates that the total mass–energy of the universe contains 4.9% ordinary matter, 26.8% dark matter and 68.3% dark energy. Thus, dark matter constitutes 84.5% of total mass, while dark energy plus dark matter constitute 95.1% of total mass–energy content.
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What's the difference between dark matter and dark energy?  (Intermediate) For now, we think of them as separate, and we believe the cosmos to be composed of roughly 0.03% heavy elements (anything other than hydrogen and helium), 0.3% neutrinos, 0.5% stars, 4% free hydrogen and helium, 25% dark matter, and 70% dark energy.
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Dark Energy, Dark Matter So the mystery continues. Another explanation for dark energy is that it is a new kind of dynamical energy fluid or field, something that fills all of space but something whose effect on the expansion of the Universe is the opposite of that of matter and normal energy.irst, it is dark, meaning that it is not in the form of stars and planets that we see. Observations show that there is far too little visible matter in the Universe to make up the 27% required by the observations.
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What is the Universe Made Of? Of this total density, we now (as of January 2013) know the breakdown to be: 1  4.6% Atoms. 2  24% Cold Dark Matter. 3  71.4% Dark Energy.  Fast moving neutrinos do not play a major role in the evolution of structure in the universe.
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Researchers detect possible signal from dark matter Above all, the signal's distribution within the galaxy corresponds exactly to what we were expecting with dark matter, that is, concentrated and intense in the center of objects and weaker and diffuse on the edges, explains Ruchayskiy.here is something missing. From this they deduced that there must be an invisible kind of matter that does not interact with light, but does, as a whole, interact by means of the gravitational force. Called dark matter, this substance appears to make up at least 80% of the Universe.
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- Overall, dark energy is thought to contribute 73 percent of all the mass and energy in the universe. Another 23 percent is dark matter, which leaves only 4 percent of the universe composed of regular matter, such as stars, planets and people.
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Why are dark matter and dark energy invisible? Hi, the issue is that both dark matter and dark energy are postulated, no one has exactly proven their existence. In some sense, dark energy is assumed to be the cosmological constant in Einstein's field equations, to explain the accelerated expansion of the universe, and dark matter is postulated through galaxy rotation curves and halos, etc... But, no one knows exactly what they are supposed to be in terms of physical matter.
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Dark energy Nearly all inflation models predict that the total (matter+energy) density of the universe should be very close to the critical density. During the 1980s, most cosmological research focused on models with critical density in matter only, usually 95% cold dark matter and 5% ordinary matter (baryons).
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Weight of the Universe Weight of the Universe. Our universe is about 13 billion years old and, like an anorexic teenager, it looks severely underweight. In fact it looks much more underweight than the severest anorexic. According to Gerry Gilmore of the Institute of Astronomy in Cambridge, the weight of all the visible matter in the universe is only a few per cent of the weight astronomers would like the universe to be. One possibility is that the universe really is underweight.
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What are dark matter and dark energy? It mapped the cosmic microwave background radiation and, in a shocking turn of events, revealed that atoms make up only 4.6 percent of the universe. The rest of the universe is far from empty, however. Dark matter accounts for 23.3 percent of the cosmos, and dark energy fills in 72.1 percent [source: NASA]. Together, these materials make up a whopping 95.4 percent of the universe, so no wonder we're still trying to figure out exactly what dark matter and dark energy actually are.
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What is the Universe Made Of? 1 In 2003, the first WMAP results came out indicating that the universe was flat (see above) and that the dark matter made up only 24% of the density required to produce a flat universe.
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What's 96 Percent of the Universe Made Of? Astronomers Don't Know NEW YORK — All the stars, planets and galaxies that can be seen today make up just 4 percent of the universe. The other 96 percent is made of stuff astronomers can't see, detect or even comprehend. These mysterious substances are called dark energy and dark matter.verall, dark energy is thought to contribute 73 percent of all the mass and energy in the universe. Another 23 percent is dark matter, which leaves only 4 percent of the universe composed of regular matter, such as stars, planets and people.
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Dark Matter & Dark Energy, Are They the Same? What is the Relationship Between Dark Matter and Dark Energy? Dark matter and dark energy comprise about 96% of the total matter-energy in the known universe. While dark matter and dark energy are not the same, they do share a few features. Neither principle can be either observed or measured by any of the tools or techniques that are currently at the scientific community's disposal.
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Why are dark matter and dark energy invisible? Dark matter, if it exists, is matter that does not interact via the electromagnetic force (of which the force carrier particles are photons, hence it can not be seen) and it does not interact via weak or strong force either. Dark matter interacts gravitationally - this is how we suspect that it might exist.
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- The Fifth Element. by Owen K Waters. The legendary Fifth Element holds the key to the answer to one of today's top mysteries in the worlds of physics and cosmology. Scientists estimate that 84% of the matter in the universe is composed of invisible dark matter, but they have no idea what it is.
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Dark Energy, Dark Matter Observations show that there is far too little visible matter in the Universe to make up the 27% required by the observations. Second, it is not in the form of dark clouds of normal matter, matter made up of particles called baryons.
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- The edge of the visible Universe is about 13.2 to 13.7 billion light years. That's about 1.27717133 × 1023 kilometers or 127 sextillion kilometers. 3 people found this useful.
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Dark energy The existence of dark energy, in whatever form, is needed to reconcile the measured geometry of space with the total amount of matter in the universe. Measurements of cosmic microwave background (CMB) anisotropies indicate that the universe is close to flat.
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astronomy The intensity of cosmic microwave The average density of matter within it. Measurement of the sizes of hot spots in the temperature distribution of the cosmic microwave background suggests that the universe is flat. Yet, the combined density of all the matter and energy we see, plus the dark matter we infer, is only about a quarter of the critical density.
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Dark Energy, Dark Matter It turns out that roughly 68% of the Universe is dark energy. Dark matter makes up about 27%. The rest-everything on Earth, everything ever observed with all of our instruments, all normal matter-adds up to less than 5% of the Universe.
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What is the Universe Made Of? Of this total density, we now (as of January 2013) know the breakdown to be: 1  4.6% Atoms. 2  24% Cold Dark Matter. 3  71.4% Dark Energy. 4  Fast moving neutrinos do not play a major role in the evolution of structure in the universe.
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What makes up most of the Universe?  (Beginner) This is what we called dark matter. There is also something that makes up most of the Universe and that we refer to as dark energy. The nature of this dark energy is completely unknown, but we know it behaves quite differently from regular matter.
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Dark Energy, Dark Matter First, it is dark, meaning that it is not in the form of stars and planets that we see. Observations show that there is far too little visible matter in the Universe to make up the 27% required by the observations.
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Dark Matter and Dark Energy Mysteries: Do Neutrons Hold the Key? Neutrons bouncing in Earth's gravity are helping to shed light on two of the greatest mysteries in the universe, dark matter and dark energy, researchers say. Dark matter is an invisible substance thought to make up five-sixths of all matter in the universe.
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Dark energy The density of dark energy (~ 7 × 10−30 g/cm3) is very low, much less than the density of ordinary matter or dark matter within galaxies. However, it comes to dominate the mass–energy of the universe because it is uniform across space.
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- Particle physics is in the midst of a great revolution. Modern data and ideas have challenged long-held beliefs about matter, energy, space and time. Observations have confirmed that 95 percent of the universe is made of dark energy and dark matter unlike any we have seen or touched in our most advanced experiments.