If it has origin...it is likely to have an end.
2007-01-11 03:04:53
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answer #1
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answered by Sky Boy 3
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It depends.
The world began with a clump of matter which exploded, hurrling planets in every direction called the big bang and the universe is continuing to expand. Imagine a balloon with lots of white dots on it [galaxies] and then imagine the more you blow up the balloon, the further apart the galaxies move further away. Some people think it will continue to expand infinitely but some people believe it will be reversed and there will be a big crunch where the whole universe crunches back together again.
2007-01-11 11:13:13
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answer #2
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answered by RiVaL 1
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Theories about the end of universe
The fate of the universe is determined by the density of the universe. The preponderance of evidence to date, based on measurements of the rate of expansion and the mass density, favors a universe that will not collapse.
1. Big Freeze or Heat Death
Main articles: Big Freeze and Heat death of the universe
The Big Freeze is a scenario under which continued expansion results in a universe that is too cold to sustain life. It could occur under a flat or hyperbolic geometry, because such geometries are a necessary condition for a universe that expands forever. A related scenario is Heat Death, which states that the universe goes to a state of maximum entropy in which everything is evenly distributed, and there are no gradients — which are needed to sustain information processing, one form of which is life. The Heat Death scenario is compatible with any of the three spatial models, but requires that the universe reach an eventual temperature minimum.
2. Big Rip: infinite time, finite lifespan
In an open universe, general relativity predicts that the universe will have an indefinite future existence, but will approach a state where life as we know it cannot exist. Under this scenario, dark energy causes the rate of expansion of the universe to accelerate. Taken to the extreme, an ever-accelerating expansion means that all material objects in the universe, starting with galaxies and eventually all life forms, no matter how small, will disintegrate into unbound elementary particles. The end state of the universe is a singularity, as the expansion rate becomes infinite. For a possible timeline based on current physical theories, see 1 E19 s and more.
The Big Crunch. The vertical axis can be considered as either plus or minus time.
The Big Crunch. The vertical axis can be considered as either plus or minus time.
3. Big Crunch: finite time and lifespan
The Big Crunch theory is a symmetric view of the ultimate fate of the universe. Just as the Big Bang started a cosmological expansion, this theory postulates that the average density of the universe is enough to stop its expansion and begin contracting. The end result is unknown; a simple extrapolation would have all the matter and space-time in the universe collapse into a dimensionless singularity, but at these scales unknown quantum effects need to be considered (See Quantum gravity).
This scenario allows the Big Bang to have been immediately preceded by the Big Crunch of a preceding universe. If this occurs repeatedly, we have an oscillatory universe. The universe could then consist of an infinite sequence of finite universes, each finite universe ending with a Big Crunch that is also the Big Bang of the next universe. Theoretically, the oscillating universe could not be reconciled with the second law of thermodynamics: entropy would build up from oscillation to oscillation and cause heat death. Other measurements suggested the universe is not closed. These arguments caused cosmologists to abandon the oscillating universe model. A somewhat similar idea is embraced by the cyclic model, but this idea evades heat death, because of an expansion of the branes dilute entropy accumulated in the previous cycle.
4. Multiverse: no complete end
The Multiverse (or parallel universe in the singular case) scenario states that while our universe may be of finite duration, it is but one universe among many. Moreover, the physics of the multiverse may permit it to exist indefinitely. In particular, other universes may be subject to physical laws differing from those that apply in our own universe.
5. False vacuum
If the vacuum is not in its lowest energy state (a false vacuum), it could collapse into a lower energy state. This is called the Vacuum metastability event. This would fundamentally alter our universe; the various physical constants could have different values, severely affecting the foundations of matter.
2007-01-11 11:09:12
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answer #3
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answered by Chromey 1
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The universe is expanding, so there is an end--it is the point at which it stops expanding, and starts to contract.
Finally once it has contracted to the point where it can't get any smaller, the whole process starts over again.
This is on an unimaginable scale of time - trillions of years are just a speck comparitively.
2007-01-11 11:06:26
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answer #4
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answered by superfunkmasta 4
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Theories abound. There is however an edge to matter. If all matter was created in the big bang then the matter in the universe has been expanding from a central point and will continue to doso. There are theories that space is infinite, but we can only observe bright matter so have no way of proving it. Scary Stuff...........
Cling to this small ball called earth.
I do......
2007-01-11 11:06:11
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answer #5
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answered by graliv 2
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According to the big bang theory,the universe is expanding every earth second and hence planets are constantly moving away from us. So I guess we can conclude that the universe has no end.
2007-01-11 11:11:59
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answer #6
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answered by marsdude 1
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Theoretically, no. The universe is expanding, and theoretically will go on doing so. Unless there is undetected matter out there (and if there is enough to create the right conditions, gravitationally speaking) it will someday start contracting. Don't worry though, nothing is due to happen in the next couple of years.
2007-01-11 11:09:55
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answer #7
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answered by Anonymous
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no one can give u an awnser to that 1 because nobody really no's as fact they can only guess,the theory of the big bang say's the is universe is expanding but is slowing down,but what is it expanding into? plus it's going to collapse on it's self.maybe this universe is a pocket in what might be something bigger than we no of and there might b endless universes out there! who no's!!!
2007-01-11 11:13:17
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answer #8
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answered by Anonymous
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no way, there may be voids and as for one big bang that's not logical either, beginnings a black hole exploding, repeat exploding, newton third law applies and that's the cycle bang-expand-trapped (black hole) repeat but we have not had the time to observe or been close enough to observe or we would have been in it
2007-01-14 06:01:43
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answer #9
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answered by ufo18 4
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Its had begining, so space have end.
2007-01-11 15:53:31
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answer #10
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answered by CLIVE C 3
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