As best we can tell, the universe appears to have come from a singularity in space and time.
This means that the universe had no size, and there was no before. Time started at the singularity.
When we get right down to it, however, we may never understand that singularity. Particle physicists have an okay grip on how the universe looked after a tiny fraction of a second. With more and more research, we can push it back to a tinier and tinier fraction of a second and a tinier and tinier universe with all that energy crammed into it. Pushing right back to the singularity is still a ways off though.
2007-01-15 10:24:29
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answer #1
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answered by Anonymous
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the Big Bang is the scientific theory that the universe emerged from a tremendously dense and hot state about 13.7 billion years ago. The theory is based on the observations indicating the expansion of space (in accord with the Robertson-Walker model of general relativity) as indicated by the Hubble redshift of distant galaxies taken together with the cosmological principle.
Extrapolated into the past, these observations show that the universe has expanded from a state in which all the matter and energy in the universe was at an immense temperature and density. Physicists do not widely agree on what happened before this, although general relativity predicts a gravitational singularity (for reporting on some of the more notable speculation on this issue, see cosmogony).
A gravitational singularity is a singularity in the structure of spacetime. Roughly, it is a place where quantities which are used to measure the gravitational field become infinite. Such quantities are the curvature of spacetime or the density of matter. More accurately, in a spacetime with a singularity there are geodesics which cannot be completed in a smooth manner. The limit of such a geodesic is the singularity.
A black hole is defined to be a region of space-time where escape to the outside universe is impossible. The outer boundary of this region is called the event horizon. Nothing can move from inside the event horizon to the outside, even briefly, due to the extreme gravitational field existing within the region. For the same reason, observers outside the event horizon cannot see any events which may be happening within the event horizon; thus any energy being radiated or events happening within the region are forever unable to be seen or detected from outside. Within the black hole is a singularity, an anomalous point in space-time where all matter is infinitely dense and is infinitely compressed into nothingness.
My personal belief is that each black hole is the start of a new universe.
2007-01-15 11:20:22
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answer #2
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answered by nick w 2
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According to currently accepted theory of cosmology i.e Big Bang, Universe started out with a massive explosion form a singularity (A singularity in science is defined as a infinitesimal mathematical point of already defined quantity in this case it would be (space, time) with both values to be zero).
Now this explosion was not like a nuclear bomb going off or for that matter of fact it was unlike any other explosion we know. It was an explosion of creation of Space (We can all visualize Space being created like a balloon inflated) and Time (We know very little about nature of time but we can feel the passage of time) itself.
So now our basics are clear I come to your question, it is almost impossible to visualize mathematically or otherwise the scenario when space and time was non-existent as all of our Physics is based on the universal laws that only came into being at the instant of creation of universe itself.
The question in a sense is similar to asking how/what we were (and felt) before we were biologically conceived. We can simply argue that we didn’t exist; it can be argued for universe that it simply did not exist.
There is a lot flurry in scientific community to explain the nature of primordial singularity in terms of quantum fluctuation but still any thing defined in quantum realm is weird because quantum theory itself is weird.
Science is in no way defining the pre-Big bang scenario better than some theological argument
2007-01-15 13:32:22
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answer #3
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answered by A_Manish 1
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Since there were no words or mathematics before the big bang, there is no way to look at the time before time = 0. However, if you add all the positive forces and energy in the universe to all the negative forces and energy, the sum is zero.
2007-01-15 10:32:17
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answer #4
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answered by Anonymous
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Your subject is calling this interior the religion area as a exchange of the Physics area. actuality keeps to be, besides the undeniable fact that, there can'e be a "in the previous" the vast bang considering the incontrovertible fact that means that element already existed, which it did not. Time, area and the 4 forces of the universe (gravity, electromagnetic, good and vulnerable) have been merged right into a single state at a element of singularity. as quickly because it fairly is known and a unifying concept of each thing is made, then we can proceed with looking out how this element of singularity got here to be, coming up a unfold. There are hypothesies positioned forward besides the undeniable fact that none slot in with the present concept and experiments such because of the fact the LHC in CERN which launches this October ought to shed some added easy into the situations that have been present day even earlier after the "vast bang" which ought to respond to many questions (and pose much greater), besides the undeniable fact that to check how the potential and forces interior the universe originated will require theories, physics and arithmetic previous something all of us be attentive to of as we communicate. it fairly is a exciting question, yet interior the incorrect area as I stated.
2016-10-31 05:05:20
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answer #5
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answered by ? 4
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According to the latest greatest theory (Membrane theory) there are these large membranes wondering through other dimensions. When they collide, this forms a big bang and spawns off a universe in it's own new dimension. According to M theory big bangs happen all the time. There are an infinite number of other universes in their own dimension inaccessible to us.
2007-01-15 16:22:13
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answer #6
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answered by ZeedoT 3
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The collapse of the previous universe into a tremendous black hole with a singularity at it's core.
I believe this is called the oscillating universe theory. I read about it once, I think it was on a clay tablet I was reading in high school. It's been a few years ago.
2007-01-15 11:25:43
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answer #7
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answered by gimpalomg 7
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Starbucks and a McDonald's or two. It wasn't til after the big bang that the developers started moving in, condo's went up then golf courses.
2007-01-15 10:21:37
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answer #8
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answered by Anonymous
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I do not belive that it all started with a big bang. when you at nature doesn't it look like it takes much more then a big something of nothing to create?
2007-01-15 10:21:24
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answer #9
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answered by Christina W 1
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space is misunderstood because we relate our own size and the size of what we can touch and see into a relative interpretation of something that is infinite. Space is as ubundant outward as it is in. If you were the size of Jupiter, and the solar system were the size of your car, then microbes on earth would be unnoticeable. Think about it.
2007-01-15 10:21:21
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answer #10
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answered by Anonymous
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