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How did Hubble' s discovery that the universe is currently expanding change scientific thought about the size of the universe in the past?
Expansion, run in reverse, is contraction. The universe gets larger as it moves into the future, and smaller as we examine its past. If we go back to the time when the expansion originally began, which was the Big Bang, the universe was very small, perhaps only the size of a proton, or even a singularity of zero volume.
Put theses in increasing size. Andromeda galaxy Earth Sun Universe?
Earth, Sun, Andromeda galaxy and then the universe. increasing size------------------------->
Why is it difficult to estimate the current size of the universe?
It is difficult to estimate the current size of the universe because the universe curves back on itself. (Do not ask how it curves back on itself. The equations are in the Theory of Relativity by Albert Einstein.) Since no one can ever measure the distance to an edge, no way exists to determine the Universe's size.
Does red shift expand the universe?
Redshift does not expand the universe. Redshift is a physical quantity that is used to describe the expansion of the universe. The current time has a redshift of zero. at redshift 1, the universe was half the size it is now. At redshift 2, the universe was 1/3 the size it is now, and so on. if redshift is z, then (size of universe at redshift z)/(current size of universe)= 1/(z+1)
Why do astronomers attempt to limit or make predictions as to the size of the universe?
== All forms of science are about asking questions about the world and trying to find answers. If someone is curious about the size of the universe, science will try to find an answer. == If man knew the size of the universe, he 1) would be able to estimate the magnitude of the energy that created the universe, and 2) would be closer to determining the energy and composition of the early universe. == By determining the size of the universe, scientists might be able to make some predictions about the future of the universe! In our universe, everything is currently "expanding" and galazies are, in general, moving away from each other. If we had some idea of the volume of the universe, we might be able to make some guesses about its shape. And we might also be able to make some predictions about whether the universe will expand "to infinity" or not. Will there exist in the end enough gravity to "take hold" of all the galaxies and pull all the mass back together in the "Big Crunch" bringing everything full circle? Or will everything just continue to "fly apart" resulting in the reduction of the mass per unit volume of that universe to the point where everything just "dies" in the emptiness of seeming endless dimensions of spacetime? If we knew to some degree of certainty the volume of the universe, we might be able to look into the future of that universe and see where it's headed and how it might end. == And another reason is, because, since images travel at the speed of light, the size of the Universe that we can observe is linearly related to the age of the Universe, or at least the purported age. So, since we can't really deduce at all what's happening outside our sphere of visibility, it becomes quite imperative to place limits on the size of the Universe.By the way, quite ironically, Earth is nearly at the Exact center of OUR observable Universe, in fact, any human being is at the center of his/her own personal observable Universe. Plato gets some credit after all, huh?=== === === ===
Is the size of the universe falsifiable?
Yes, the size of the universe is absolutely falsifiable because the universe has not been accurately measured. Once the universe is accurately measured, it will be much more difficult to falsify its size.
How the size of the universe changed not the size or mass of the earth JUST the universe?
The Universe is continuously expanding. The distance between galaxies increases. The amount of space in the Universe increases.
How can we estimate the size of universe?
Currently we can't. It seems quite certain that the Universe is, at the least, several times the size of the OBSERVABLE Universe. However, this is just a lower bound, and the actual size of the Universe may be anywhere between that, and infinity.
Does the universe increase?
The Universe is expanding, so its size is increasing.
Is it true that your universee is inside a universe?
Yes. Our universe started as a size of our hands, then the size of earth. Then became HUGE
How did Hubble' s discovery that the universe is currently expanding change scientific thought about the size of the universe in the past?
Expansion, run in reverse, is contraction. The universe gets larger as it moves into the future, and smaller as we examine its past. If we go back to the time when the expansion originally began, which was the Big Bang, the universe was very small, perhaps only the size of a proton, or even a singularity of zero volume.
How did Hubble's discovery that the universe is currently expanding change scientific thought about the size of the universe in the past?
Expansion, run in reverse, is contraction. The universe gets larger as it moves into the future, and smaller as we examine its past. If we go back to the time when the expansion originally began, which was the Big Bang, the universe was very small, perhaps only the size of a proton, or even a singularity of zero volume.
Do volume in the universe change?
Yes. The Universe is expanding.
What percentage of the universe has life?
that is unpredictable. cause we cant find the size of the universe....
What does the big bang theory explain about the size of the universe?
Not much, really. Our Universe MIGHT be significantly larger than what we can see -- that portion of our Universe we call the "observable Universe" -- or it might be infinite. No conclusion can be made about the size of our Universe based on the fact of the Big Bang.
Put theses in increasing size. Andromeda galaxy Earth Sun Universe?
Earth, Sun, Andromeda galaxy and then the universe. increasing size------------------------->
Why is it difficult to estimate the current size of the universe?
It is difficult to estimate the current size of the universe because the universe curves back on itself. (Do not ask how it curves back on itself. The equations are in the Theory of Relativity by Albert Einstein.) Since no one can ever measure the distance to an edge, no way exists to determine the Universe's size.
