Neither
2006-06-09 04:10:45
·
answer #1
·
answered by Toy 2
·
0⤊
1⤋
The Big Bang is a theory used to explain the time in which the universe began, around 15 billion years ago. It is based on Hubble's law redshift of distance galaxies which were taken from the conclusion that space is expanding.
The term Big Bang is misleading. The Big Bang theory does not state the universe started with a great explosion at all. It states that matter which was condensed very tightly and was incredibly heated to the size of a pin whole started to spread apart slowly and without any violent eruption. People only assume that an explosion happened because of its name.
While the Steady State Theory is an alternative theory in the big bang in scientific terms it never became a true theory but stayed at the hypothesis level do to some very major contradictions such as quasars and radio galaxies that are found only in large distances. Lastly going against the Steady State Theory was the finding of cosmic background radiation in 1965 which finally put to rest that hypothesis. The radiation showed no signs of polarization which are associated with scattering if the Steady State Theory was true.
2006-06-09 09:58:51
·
answer #2
·
answered by jebus_n_fries 2
·
0⤊
0⤋
Am an amature astronomer and acording to me none created the world. The creation of the universe is better explained by steady state theory.
An alternative theory to the Big Bang was proposed in 1948 by Hermann Bondi, Thomas Gold, and Sir Fred Hoyle It was called the steady-state theory. They found the idea of a sudden beginning to the universe philosophically unsatisfactory. Bondi and Gold suggested that in order to understand the universe we needed to make observations of its distant parts, which would of necessity be observations from the past. In order to interpret those observations we must use the laws of physics, and those have been formulated at the present time. If the state of the universe was different in the past how could we be sure that the laws of physics were not different in the past as well? If they were different no valid conclusions could be drawn. For Bondi and Gold not only would the laws of physics have to be the same in all parts of the universe, but at all times as well. The Universe would also be the same, always static, always contracting or always expanding. The first two could be ruled ut by the simple observation that the sky is dark at night
Hoyle approached the problem mathematically and tried to solve the problem of the creation of the matter seen all around us, which in the Big Bang theory is all created at the start. He proposed that the decrease in the density of the universe caused by its expansion is exactly balanced by the continuous creation of matter condensing into galaxies that take the place of the galaxies that have receded from the Milky Way, thereby maintaining forever the present appearance of the universe. In order to produce the matter, a reservoir of energy would be required. In order to prevent this reservoir being diluted, by the creation of matter and by the expansion of the universe, he made this reservoir negative. The expansion and creation now work against each other and a steady state of energy is maintained.
The steady state theorists explained the hydrogen - helium abundance by the presence of supernovae. Originally the big bang theoy suggested that all the heavy elements were produced at the start of the universe, but now it is accepted that only the helium and a little lithium was produced then and both theories now accept the role of supernovae in the creation of heavy elements.
One important and little known attribute of the steady state theory is its importance to an aspect of electromagnetic and quantum theory. Maxwell's equations of electromagnetism have two solutions, one positive, one negative. Consider the equation x2 = 4. It has two solutions; x = 2 and x = -2. In Maxwell's equations the negative solution was usually discarded, as it would correspond to something travelling backwards in time. However, in 1941 John Wheeler and Richard Feynman, proposed that by taking seriously the idea that two waves, one travelling forward in time and one travelling backwards, were produced in electromagnetic interactions certain problems in quantum theory disappeared. Between the cause and effect in an experiment the two waves add together,but before the cause, and after the effect, the two waves cancel, so what we see is the sequence; cause, interaction, effect. The crucial aspect for cosmology in the Wheeler - Feynman theory is that the two waves only cancel outside the event if they are both of equal size, in other words the wave from the future has to be the same size as the wave from the past, and this implies that the universe is the same in the future as it was in the past and hence in a steady state.
Steady state is not without problems though, there are several areas in which it is in difficulty. One is the distribution of radio sources. For any sources if the distribution is uniform the fainter ones will be the most distant. If we draw a sphere around us corresponding to a certain brightness then the number of such sources will be proportional to the surface area of that sphere, and thus proportional to radius squared. The number of sources brighter than that certain brightness should be proportional to the volume of that sphere, an hence radius cubed, as they will all lie within the sphere. A graph of the log of the number of sources at a particular brightness, to the log of the number of sources brighter than that brightness, should have a gradient of 1.5 (=3/2) For radio sources the ratio is 1.8 showing that there are more bright radio sources at greater distance, and hence earlier times than would be expected for a steady state universe. The conclusion is that the universe is evolving or at least changing.
The discovery of quasars in 1966, also provided evidence contradicting the steady-state theory. Quasars are very small but brilliantly luminous extragalactic systems, found only at great distances. Their light has taken several billion years to reach the earth. Quasars are therefore objects from the remote past, which indicates that a few billion years ago the constitution of the universe was very different than it is today.
2006-06-09 09:57:50
·
answer #3
·
answered by stroha 2
·
0⤊
0⤋
Well, put it this way, noone knows how big this bang was but it was big enough to oppose the large gravity of the universe and is still expanding at the moment and has been doing so for billions of years.
2006-06-09 09:41:32
·
answer #4
·
answered by Anonymous
·
0⤊
0⤋
According to scientists a big bang...but I'm more of a religious person so I dont believe the theory...my belief is that God made the universe and everything in it himself
2006-06-09 09:40:48
·
answer #5
·
answered by some_pimp2005 2
·
0⤊
0⤋
A very big BANG about a billion time more that a nuclear bomb from a molecule smaller that an atom i our body
2006-06-09 09:41:33
·
answer #6
·
answered by ? 4
·
0⤊
0⤋
Continuous Creation. Our Universe is collapsing and expanding at approximately 1.6x10^/sec/sec
2006-06-09 10:04:04
·
answer #7
·
answered by Dave B 1
·
0⤊
0⤋
it wasent a bang atoll god created the earth
2006-06-09 09:42:45
·
answer #8
·
answered by I LIVE IN YOUR PANTS 3
·
0⤊
0⤋
could be either
2006-06-09 09:40:51
·
answer #9
·
answered by carolinagrl 4
·
0⤊
0⤋