Big bang theory come from the expand of universe. It is measured by Hubble constant.
http://en.wikipedia.org/wiki/Hubble%27s_law
More recently, cosmic background has been measured precisely and confirm big bang theory
http://en.wikipedia.org/wiki/COBE
Other theories do not correspond to experimental facts.
2007-09-07 11:44:23
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answer #1
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answered by Scanie 5
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The people that answered that the Big Bang theory is a proven fact are incorrect. The Big Bang theory is called a theory because it is a theory not a proven fact. Those who said that the Big Bang is a proven fact do not even understand the Big Bang theory. If they did, they would know that even WITHIN the Big Bang theory there are many different theories. The Big Bang theory has evolved since it's inception in the 1930's and it continues to be formed as new observations and discoveries and mathematical formulas develop. It is FAR from any finalized form which could be called the Big Bang fact. Besides the Big Bang theory are many other theories regarding the origin of our Universe. Perhaps with less supporters, but nonetheless equally as valid until proven otherwise.
Theory: A well-substantiated explanation of some aspect of the natural world; an organized system of accepted knowledge that applies in a variety of circumstances to explain a specific set of phenomena. A comprehensive explanation of a given set of data that has been repeatedly confirmed by observation and experimentation and has gained general acceptance within the scientific community but has not yet been decisively proven. A theory may be true or false. A statement generated on the basis of highly confirmed hypotheses and used to generalize about conditions not yet tested. No theory is ever proven in any field, with the possible exception of pure mathematics, since new data might come along that require a change, and there are always details that haven't been tested.
Fact: Something that has really occurred. Fact is synonymous with truth or reality, as distinguishable from conclusions or opinions. A fact can be defined as something which is the case, a concept whose truth can be proved as indisputable.A proposition that has been asserted to be either True or False.
There may come a day when the Big Bang can be incorporated into a single theory upon which all or almost all scientists agree. That day is not today. Today we have educated guesses and intelligent approximations based upon current observations. That is not enough to call the Big Bang theory a proven undeniable incontrovertible fact.
Your friend is wrong.
Alan- try forming answers with your own words instead of posting lengthy copies of things that you can't grasp the meaning of.
2007-09-07 19:45:36
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answer #2
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answered by Troasa 7
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The expansion of the universe has been pretty well proven, but I would say there is some room for doubt about the big bang as the ultimate origin. The expanding universe just naturally suggests a big bang kind of beginning to the universe to most people, scientists and non-scientists alike, and most scientists subscribe to the big bang theory. But I would say it is not as well proven as some other theories, such as the evolution of life from lower forms.
2007-09-07 19:19:08
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answer #3
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answered by campbelp2002 7
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Big Bang Theory, currently accepted explanation of the beginning of the universe. The big bang theory proposes that the universe was once extremely compact, dense, and hot. Some original event, a cosmic explosion called the big bang, occurred about 13.7 billion years ago, and the universe has since been expanding and cooling.
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The Cosmic Background Explorer (COBE) spacecraft, a project of the National Aeronautics and Space Administration (NASA), mapped the cosmic background radiation between 1989 and 1993. It verified that the distribution of intensity of the background radiation precisely matched that of matter that emits radiation because of its temperature, as predicted for the big bang theory. It also showed that cosmic background radiation is not uniform, that it varies slightly. These variations are thought to be the seeds from which galaxies and other structures in the universe grew.
Evidence indicates that the matter that scientists detect in the universe is only a small fraction of all the matter that exists. For example, observations of the speeds at which individual galaxies move within clusters of galaxies show that a great deal of unseen matter must exist to exert sufficient gravitational force to keep the clusters from flying apart. Cosmologists now think that much of the universe is dark matter—matter that has gravity but does not give off radiation that we can see or otherwise detect. One kind of dark matter theorized by scientists is cold dark matter, with slowly moving (cold) massive particles. No such particles have yet been detected, though astronomers have made up fanciful names for them, such as Weakly Interacting Massive Particles (WIMPs). Other cold dark matter could be nonradiating stars or planets, which are known as MACHOs (Massive Compact Halo Objects).
IT IS NOT PROVEN (FULLY) BUT IT IS WIDELY ACCEPTED.
2007-09-07 19:05:08
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answer #4
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answered by Sammy 1
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Scientific theories cannot be "proven". however, they are well supported by evidences. some for the big bang theory are:
-cosmic background radiation, discovered in 1965 at the exact temperature predicted by the theory (2.725K) and studied in detail by COBE spacecraft in the 90's. the best evidence we have for the theory.
-evolution and distribution of galaxies
-Hubble's law and redshift seen in distant galaxies
-abundance of primordial elements
-stellar observations and evolution agrees well with age of universe (13.7 billion years)
just to list a few... like i said, it's well supported by evidence. that's why it's the most widely accepted model of our universe.
2007-09-08 23:25:51
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answer #5
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answered by rb_1989226 3
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a few years ago they god a microwave background of the universe and it supports the big bang. but it will be a long time before its proven though, but its very well supported.
matt_r_baker is an idiot, dont take anything he says seriously because he doesnt even know what the big bang is apparently, there was on one particle called the 'pimevil atom'.
and goring is also an idiot. is not pseudoscience at all.
2007-09-07 19:31:53
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answer #6
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answered by Anonymous
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It depends on what you mean by "proven". So far, the theory explains what we know about the universe. We know that the galaxies are moving away from each other, the motion is characterized by Hubble's Constant, and that there is a uniform background temperature of space in the universe.
2007-09-07 18:43:43
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answer #7
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answered by cattbarf 7
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No; its still pseudoscience.A theory is considered pseudo science until positive proof exists.
There are other theories besides the BiG Bang theory of singularity. The creation of the Universe could have taken place as an external phenomena ,rather than a singularity which is considered a nuleus representing the total mass of the Universe of a condensed form in a volume containment.
Never the less the Big bang theory is the most interesting theory of the Creation of the Universe.It offers interesting ideas of physical gravitational phenomena, As it attempts to enravel the mysteries that our Creator has set in the Universe.
Reccesion velocites faster that speed of light of the observed
Galaxies in the Universe may have several interpretation . One is Einstein 's cosmological constant in his Field equations and may just be normal gravitational responses due to the continuall mass changes of celestial bodies in the Universe.
And the cosmic radiation of micromasses could just be an entropy phenomenon, which obeys the 2nd law of thermodynamics.
In conclusion there are many possiblities that can be viewed from different perspectives, how the the Universe was made to function in the architecture that we observe it.
Newtons 3rd Law still applies even for the Universe=To every pressure there is a counter pressure to balance it.
2007-09-07 19:06:34
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answer #8
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answered by goring 6
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Theories are not elevated to facts. They CONTAIN facts. They are above facts; they are more useful than facts because they can predict AND they can explain WHY something happens. And yes, the big bang theory is the best way to explain our observations.
2007-09-07 19:20:24
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answer #9
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answered by eri 7
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Actually it has been proven, like a few months ago actually. Scientists used a machine to collect radiation that they determined was from when the big bang occured.
2007-09-07 18:43:18
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answer #10
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answered by krysteven 4
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