There are a few theories.
Big bang suggests that everything exploded from an infinitely dense particle.
Quantum fluctuations suggests that before the plank epoch, the uncertainty principle allows the creation of matter and energy. Also causality broke down and the universe started as an effect without a cause, but more of a quantum fluctuation. (I'm not too familiar with this one, you might want to check some sources on this)
M theory suggests that there are an infinite number of parallel 11 dimensional membranes that float around forever. And when two of these membranes collide, a big bang occurs and a universe is created.
The Bible suggests that God created everything, while himself being uncreated.
2007-12-15 21:58:02
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answer #2
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answered by gae_bulg 3
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Scientists are right, they don't know how it actually started. We've proven the Big Bang, and the singularity part we haven't really proved there are other ideas to how the big bang happened, but no one knows anything after that. Its just a very weird thing to imagine, the origin of EVERYTHING. If at one point we had nothing, how did anything happen? If we always had something, then we might just be a small period of an infinitely old space. Its a weird idea.
2016-05-24 04:24:49
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answer #4
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answered by machelle 3
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The Big Bang hypothesis is extremely poor at explaining the origin of the universe.
There are basically 2 options- Big Bang or Creation. Those that push BB generally do so for philosphical (religious) reasons, because they cannot consider the possibility of God.
Note that *any* idea about the origins of the universe are philosphical rather than scientific - and are held by faith. Noone was around to see what happened, we can't test or reproduce the origin experimentally.
Proponents of the BB have had to invent all sorts of artifical constructs such as dark matter, dark energy, and inflation to try and explain things.
They cannot even explain something as simple as the origin of the moon, or basic facts about our solar system - such as why Neptune generates heat when it was expected to be cold.
Check here for loads of articles on astronomy and BB.
http://www.creationontheweb.com/content/view/3051/
2007-12-15 22:04:12
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answer #6
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answered by a Real Truthseeker 7
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The story is told, by such modern-day astrophysical and mathematical prophets as Stephen Hawking, Roger Penrose, and others, of a time when the universe was nothing like it is now-- galaxies had not formed, planets were not in existence, even the elements which we recognize so easily today were not even in their stages of infancy. Nothing was like it is now. The universe was unrecognizable, because essentially, it did not even exist. Let me explain how these conditions first came to appear possible in the minds of astronomers.
In 1929, Edwin Hubble made the incredible discovery that wherever one looks in the sky, one can see that distant galaxies are moving rapidly away from each other. In other words, the universe is expanding. At earlier times, it follows, all the matter in space would have been much closer together than it is now. In fact, it would have all been in the same place. But could this make sense?
Since then, astronomers have hypothesized the circumstances of how the matter in the universe went from being very close together to very far apart, as it is perceived today. The predominant theory to emerge is known popularly as the Big bang theory. Here is the picture of the origin of our universe that it paints…
At some point in the history of time, perhaps some ten to twenty billion years ago, all of the matter in the universe was extremely close together. In fact, it was so close together that it was all in the same place, the exact same point. This point, of infinitesimally small size, had infinite density. The curvature of space-time was infinite. Essentially, the universe was curved into itself. At such a point, the general theory of relativity breaks down, according to its own principles, and all the laws of science known to man today break down with it. Mathematicians call this type of point a singularity. The singularity at the beginning of the universe was in a condition for which man has no ability of prediction. Our mathematical and physical laws cease to apply, and we can neither say what will come after nor what came before.
At this point, man’s ability to describe the state of the universe is extremely limited. The laws of physics under such a condition are not known. Indeed, nothing then would be recognizable to man, or comparable to the state of the universe which he observes today. Therefore, man cannot say why the events which happened next did so; he can only say that they happened….
For an unknown reason, the universe suddenly began to expand.
An expansion would automatically result in a decrease in temperature. Thus, the condition of the universe began to change immediately, and slowly the particles which we recognize today began to take shape and form.
10-43 seconds after the big bang, still under very high energy, particles such as quarks, electrons, antielectrons and some possible others began to form. Their behavior of decay and collision at this time is still very much unknown, but theories such as the Grand Unification Theory attempt to describe the activity of particles at such high energy.
10-34 seconds after the big bang, quarks and antiquarks are formed at a high rate as a result of the collisions of particles at such high energies. These particle/antiparticle pairs were produced at the same time that some were being annihilated. However, for whatever reason, they were being produced much faster or with more frequency than they were being annihilated. The universe, at this point, is now the size of an orange.
By the time 10-10 seconds has elapsed, the antiquarks, as a result of collisions with quarks, have been completely annihilated and have disappeared. These collisions also resulted in the formation of photons. Also at this time, protons and neutrons have formed.
Finally, one full second after the initial moment of expansion, at a temperature of approximately ten billion degrees, the universe began to take a recognizable form: there were mostly photons, electrons, and neutrinos, and their antiparitcles, along with some protons and neutrons. The protons and neutrons started to bind together to form the nuclei of elements we know today as hydrogen, helium, lithium, and deuterium (heavy hydrogen).
With three minutes passed, at a dropping temperature of one billion degrees, the matter that has already formed couples together with radiation. This radiation is still detectable today.
Jump forward now 300,000 years, and the expanding universe still does not resemble the universe in which we live. Matter and radiation begin to decouple as electrons bind with nuclei. There is now background radiation.
Jump forward again one billion years and finally things begin to take shape. Clusters of matter form quasars, protogalaxies, and stars which burn hydrogen and helium forming heavier nuclei, and newer elements.
Finally, we stop at about 15 billion years after the big bang, possibly our present day, and what do we have? Solar systems have condensed around stars. Atoms begin to link to form complex molecules. Some of these molecules link to form living matter.
The universe is still expanding, possibly even accelerating. The expansion of the universe is modeled after the expanding surface of a balloon. Galaxies, like points on the surface, would be expanding away from every other point, such that no one point is the center.
2007-12-15 20:28:51
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answer #8
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answered by lilangel 2
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