total mass of universe
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Mass, Size, and Density of the Universe Mass, Size, and Density of the Universe. The mass density of visible matter (i.e., galaxies) in the Universe is estimated at 3e-28 kg/m^3 (3e-31 times the mass density of water). The radius of the visible Universe is estimated at 1.7e26 m (18 thousand million lightyears) plus or minus 20 percent or so.
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Surprise: The Third Most Common Element In The Universe Isn't What You Think This is the Universe we started off with: a Universe that was — by number of nuclei — about 92% hydrogen, 8% helium, and about 0.00000001% lithium. By mass, that’s about 75-76% hydrogen, 24-25% helium, and 0.00000007% lithium.
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Universe The present overall density of the Universe is very low, roughly 9.9 × 10−30 grams per cubic centimetre. This mass-energy appears to consist of 73% dark energy, 23% cold dark matter and 4% ordinary matter. The density of atoms is about a single hydrogen atom for every four cubic meters of volume. The properties of dark energy and dark matter are not known. Dark matter slows the expansion of the Universe.
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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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- 3.2 Mass-to-Light Ratios. The discovery of flat rotation curves has thrown out any hopes we might have had of estimating the total masses of galaxies based on an extrapolation of their rotation curves.
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Mass, Size, and Density of the Universe Mass, Size, and Density of the Universe The mass, size, and density of the universe involve very big and very small numbers with large numbers of zeros in front of or behind the decimal point.
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Ocean The total mass of the hydrosphere is about 1.4 quintillion metric tons (7018140000000000000♠1.4×1018 long tons or 7018150000000000000♠1.5×1018 short tons), which is about 0.023% of Earth's total mass. Less than 3% is freshwater; the rest is saltwater, almost all of which is in the ocean.
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APM 08279+5255 - The Largest Water Mass In The Universe (So Far) Astronomers believe the universe was formed by the Big Bang roughly 13.6 billion years ago. Artist's conception of a quasar similar to APM 08279+5255. Credit: NASA/ESA. The water measured in the quasar is in the form of vapor and is the largest mass of water ever found, according to the researchers. The amount of water estimated to be in the quasar is at least 100,000 times the mass of the sun, equivalent to 34 billion times the mass of the Earth.
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Age of the Universe The age of the Universe can also be estimated from a cosmological model based on the Hubble constant and the densities of matter and dark energy. This model-based age is currently 13.75 +/- 0.1 Gyr. But this Web page will only deal with actual age measurements, not estimates from cosmological models.
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- The amount of extra mass it has can be worked out from (E=mc2) mt = mr + (Eo-Ei)/c2 where mt is the total mass, mr is the rest mass, Eo and Ei is the energy in the outer and inner shell respectively and c is the speed of light in a vacuum.
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- It is already everywhere. The universe is more than 99.999% empty space, including our own bodies. All physical things are made of atoms which are mostly empty space. If the nucleus was the size of a marble, the electrons would be specks of dust a half mile away. Every physical thing has that much empty space in it.
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Physics for Kids 1 Scientists estimate that the total mass of the universe is between 10 52 kg and 10 53 kg. 2  1000kg is equal to a metric tonne. 3  Greek philosopher Plato said that weight was the natural tendency of objects to seek their kin.
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- As of now probably the SMBH in the quasar S5 0014+81 is the heaviest known object in the universe. It has a mass of 40 billion Suns. It is 10,000 times more massive than the SMBH at the center of the Milky Way. Wikipedia article says that the mass was derived by indirect method of calculation.
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Age of the universe In 2015, the Planck Collaboration estimated the age of the universe to be 7001138130000000000♠13.813±0.038 billion years, slightly higher but within the uncertainties of the earlier number derived from the WMAP data.
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Is the weight of the Universe, the same now as before the Big Bang? Mass and energy are equivalent, and energy can't be destroyed (only changed) so the universe has the same amount of mass/energy. What has changed over time is the average density (amount of matter per cubic unit of space) - as the universe expands the density decreases. poldi · 8 years ago.
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Age of the Universe (to + tSS)/2 = 8-11 Gyr which we can solve for the age of the Universe giving to = 11.5-17.5 Gyr. 238U and 232Th are both radioactive with half-lives of 4.468 and 14.05 Gyrs, but the uranium is underabundant in the Solar System compared to the expected production ratio in supernovae.
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Will the universe continue to expand or will it eventually contract because of gravity? The fate of the universe has two outcomes: The Big Crunch: The gravity of all the mass in the universe sort of condenses the entire universe and pulls everything together back into the singularity from which the universe expanded.
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The Universe Adventure The average density of galaxies is the same throughout the universe and does not change with distance or direction. This is called the Cosmological Principle. On average and at large scales, the distribution of galaxies is the same throughout 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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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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How Old is the Universe? In turn, knowing the composition with this precision, we can estimate the age of the universe to about 0.4%: 13.77 ± 0.059 billion years! How does WMAP data enable us to determine the age of the universe is 13.77 billion years, with an uncertainty of only 0.4%? The key to this is that by knowing the composition of matter and energy density in the universe, we can use Einstein's General Relativity to compute how fast the universe has been expanding in the past.
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- Substituting the values for the mass of the Sun and Earth as well as the orbital radius gives a very large lifetime of 3.44 × 10 seconds or 1.09 × 10 years (that is approximately 10 13 times larger than the age of the universe). The actual figure would be slightly less than that.
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Age of the Universe The age of the Universe can also be estimated from a cosmological model based on the Hubble constant and the densities of matter and dark energy. This model-based age is currently 13.75 +/- 0.1 Gyr.
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- If the Universe is at the critical density, then the total mass of the Universe is closer to 1e53 kg, and the number of atoms (assuming that most of the mass is in the form of hydrogen atoms) about 6e79.. 10 53 kg. Ryden, Barbara.
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Matter The great majority of ordinary matter in the universe is also unseen, since visible stars and gas inside galaxies and clusters account for less than 10% of the ordinary matter contribution to the mass-energy density of the universe.
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Death Star Firepower Now, we have a formula for the total binding energy of a planet of uniform density, and all you need is the mass and radius of the planet in question. In the case of Earth, we can easily substitute G=6.6726E-11 m³/(s²·kg), M=5.97E24 kg, and r=6.371E6m to the above formula.