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How is the universe expanding even if atom can't be created?
It is space that is expanding. The amount of matter doesn't necessarily increase. This means that the average density of the Universe is decreasing.It is space that is expanding. The amount of matter doesn't necessarily increase. This means that the average density of the Universe is decreasing.It is space that is expanding. The amount of matter doesn't necessarily increase. This means that the average density of the Universe is decreasing.It is space that is expanding. The amount of matter doesn't necessarily increase. This means that the average density of the Universe is decreasing.
Will the universe expand forever will it stop or will it reverse itself according to the general theory of relavitiy it all depends on how much matter is within the universe this all depends on what f?
According to the general theory of relativity, the ultimate fate of the universe depends on its density of matter and energy. If the density is above a certain critical value, the universe will stop expanding and eventually collapse in a "Big Crunch." If the density is below this critical value, the universe will continue to expand forever. Current evidence suggests that the universe's expansion is accelerating, indicating a low density and a future where it expands indefinitely.
What force can prevent the universe from expanding?
The force that can prevent the universe from expanding is gravitational attraction. If the density of matter in the universe is sufficiently high, gravity can overcome the expansion driven by dark energy and the initial conditions of the Big Bang. This gravitational pull could lead to a scenario known as the "Big Crunch," where the universe eventually collapses back into a singular point. However, current observations suggest that dark energy is dominating, causing the universe to continue expanding.
What does dark matter have to do the critical of the universe?
Dark matter is actually Melanin. Melanin is the pigment that gives us color. Black people have 12 Melanin centers in their brain, while white people only have 2. Melanin allows us to covert the Sun's light waves into Sound waves, which gives the universe its shape and us the ability to shape the universe through the law of vibration.
What does measuring the amount of deuterium in the universe allow us to set a limit on?
Measuring the amount of deuterium in the universe allows us to set a limit on the density of normal matter in the universe. This is because the production of deuterium in the early universe is sensitive to the density of ordinary matter, providing a way to estimate the total amount present.
What does it mean when you say that the universe is below the critical density?
If the universe is ever to stop expanding and start contracting there has to be a certain amount of material (mass). This amount is called the 'critical density'. So far as is known to date the universe does not have sufficient mass to stop expanding, hence it is below the critical density.
How is the universe expanding even if atom can't be created?
It is space that is expanding. The amount of matter doesn't necessarily increase. This means that the average density of the Universe is decreasing.It is space that is expanding. The amount of matter doesn't necessarily increase. This means that the average density of the Universe is decreasing.It is space that is expanding. The amount of matter doesn't necessarily increase. This means that the average density of the Universe is decreasing.It is space that is expanding. The amount of matter doesn't necessarily increase. This means that the average density of the Universe is decreasing.
Will the universe expand forever will it stop or will it reverse itself according to the general theory of relavitiy it all depends on how much matter is within the universe this all depends on what f?
According to the general theory of relativity, the ultimate fate of the universe depends on its density of matter and energy. If the density is above a certain critical value, the universe will stop expanding and eventually collapse in a "Big Crunch." If the density is below this critical value, the universe will continue to expand forever. Current evidence suggests that the universe's expansion is accelerating, indicating a low density and a future where it expands indefinitely.
What is the significance of the omega 0 in the context of astrophysics and cosmology?
In astrophysics and cosmology, the symbol omega () represents the density parameter of the universe. When omega is equal to 1 (1), it signifies a critical density where the universe is flat and will continue expanding forever. Omega 0 () specifically refers to the initial density of the universe at the beginning of time, playing a crucial role in determining the fate and structure of the universe.
Compare and contrast average density and critical density?
the average density is the total amount of matter in the universe, whereas the critical density is about 10 to the -26th power kg/m cubed (to the third power), the dividing point between a closed or open universe.... :)
What is critical density?
The term critical density refers to the value in which the Universe is at balance. This also refers to the stopping of expansion.
What is a close universe?
The universe may be: 1) "open", which means it will continue to expand forever but at a decreasing rate. 2) "flat", which means it will eventually stop expanding but never reverse. 3) "closed", which means the universe will expand to a maximum size and then collapse in upon itself in a reversal of the big bang. The total mass-density of the universe determines which scenario will be realized. At a critical mass-density, the universe is flat. Some research has drawn scientists to believe the expansion of universe is actually accelerating. That means that the universe may actually be expanding more and more rapidly, due to a force called "dark energy". The existence of this dark energy would complicate all of the above scenarios.
Why are measurements of the current density of the universe important?
Measuring the current density of the universe is important because it helps us understand the distribution and composition of matter in the universe. By studying current density, we can learn about the evolution and structure of the universe, including the role of dark matter and dark energy in shaping its properties. This information is critical for developing accurate models of the universe's past, present, and future behavior.
What force can prevent the universe from expanding?
The force that can prevent the universe from expanding is gravitational attraction. If the density of matter in the universe is sufficiently high, gravity can overcome the expansion driven by dark energy and the initial conditions of the Big Bang. This gravitational pull could lead to a scenario known as the "Big Crunch," where the universe eventually collapses back into a singular point. However, current observations suggest that dark energy is dominating, causing the universe to continue expanding.
How dense is dark matter?
This can be answered in two steps: 1) What is the average density of all gravitational matter in the Universe? It has surprised astrophysicists that this density is extremely close to the "critical" density; above which our Universe eventually collapses in itself, and below which our Universe expands forever. This critical density is about 5 x 10^-30 grams per cubic centimeter. 2) How much of the mass of the Universe is NOT dark matter? What shocked astrophysicists even more was determining that the average density of all luminous matter was only about 20% of the critical density. Thus, about 80% of the measured density of our Universe can be accounted for via stuff that gives off light. The ratio of hydrogen to helium to deuterium in our Universe puts an upper limit on the density of baryonic matter in our Universe. This calculation also shows that the density of baryonic matter can not be more than about 20% of the critical density. These two, completely independent calculations of the amount of luminous and of baryonic matter -- the stuff we understand -- in our Universe have left scientists with little choice but to conclude that 80% of the gravitational mass in our Universe is composed of something we don't understand. And that's why we call it "dark" matter. Since the Universe has a density of 5 x 10^-30 grams per cc, and only 80% of that is dark matter, then the latter's average density is about 4 x 10^-30 grams per cc.
What is the big bang theory density?
The Big Bang Theory states that the entire Universe came into being after rapidly expanding from a singularity of infinite density.
What is the shape of the universe?
Scientists figured out three general possibilities:1.) CLOSED - The Universe can be like a sphere, thus having a positive curvature. (imagine a ball) Therefore it will be finite in size, but it would have no boundaries. If you would go long enough in one direction you would end up in the same place. In such a Universe, a large enough triangle would have more than 180 degrees and parallell lines would eventually meet. A closed Universe would end up in a 'Big Crunch', meaning that eventually it would stop expanding and due to its own gravity it would shrink back. We live in such a Universe, if its density is greater than a so called critical density.2.) FLAT - The Universe is like a sheet of rubber that can be pulled in every direction forever, thus its space is infinite and would have no boundaries. Triangles add up to 180 degrees and parallel lines remain parallel, just like on a sheet of paper. However, don't get confused in here. I used the analogy of a sheet of paper or rubber, to explain that the geomatrical characteristincs would be the same as of a 2D model. The Universe is obviously not literally flat (we're not some shapeless cartoon characters, right?). Such a Universe is possible, if its density equals the critical density.3.) OPEN - The Universe is saddle-shaped, thus having a negative curvature. Therefore its space would be infinite and it would have no boundaries. It would keep expanding forever at an accelerated rate. Large enough triangles would have less than 180 degrees and paralell lines would move apart if long enough. If the Universe's density is smaller than the critical density, then we are part of such Universe.----Which one would you pick? :-P
