RE: Science + Creation
June 21, 2012 at 3:00 pm
(This post was last modified: June 21, 2012 at 3:04 pm by Anomalocaris.)
Actually, massive red shift only accounts for the fact that CBR is 3 degrees absolute. It does not account for why even if non-isotropic, it varies by less than 0.001% across the sky. The fact that it varies very little suggest all the plasma from which the CBR decoupled reached the decoupling temperture at pretty much the same time, so that they alll then had to experienced esseentially the same amount of redi-shift. This also implies that plasma, before decoupling, must have been following pretty much the same cooling profile to get to the same temperature.
In the classic big bang model, the rate of expansion of the universe is postulated to have been monotonically decreasing since long before the moment of decoupling. As a result, the visible spatial horizon from any arbitary point in the universe could only monotonically increase with respect to time. This means if something first enters the visible horizon of another thing right about now, this would be the very first occassion in the entire history of the universe when these two things could have been seen in any way from each other, or could have exchanged anything, energy, information, etc, anything at all, if the exchange must be limited to speed of light.
This is the source of the flatness problem. What can account for two bodies of plasma that had never, ever, exchanged any information, in any form, directly or indirectly, before now; and yet appear to having started at essentially the same initial condition and followed essentially the same evolution at the same rate up to now? Random chance certainly isn't convincing. In essence, what could homogenize plasma faster than light could travel?
The inflation model essentially does away with the problem by doing away with the assumption that the rate of universe's expansion had always monotonically decreased. It postulate the rate of expansion actually experienced a massive surge (inflation) shortly after the big bang. This means the visible horizon from any arbitary point in the universe did not monotonically increase with respect to space. Instead, it began very large, then it radically shrunk as the universe began its massive inflation of expansion. When the inflation ended, the visible horizon began to increase again. Yet even now, our visible horizon had not quite reached the size it attained before the inflation. Consequently, when something enters the visible horizon of another thing now, that is NOT the first instance in the entire history of the universe when these two things could have exchanged anything, energy, information, etc. If there could have been communication between plasma before they became visible to us, then we can see how conditions in plasma can homogenize and their evolution could have been synchronized.
Neither the original big bang, nor the inflation model actually postulate the universe has to be homogenous. But inflation model can explain why regardless of whether the universe is homogenous, it should appear very close to being homogenous from our ventage point.
In the classic big bang model, the rate of expansion of the universe is postulated to have been monotonically decreasing since long before the moment of decoupling. As a result, the visible spatial horizon from any arbitary point in the universe could only monotonically increase with respect to time. This means if something first enters the visible horizon of another thing right about now, this would be the very first occassion in the entire history of the universe when these two things could have been seen in any way from each other, or could have exchanged anything, energy, information, etc, anything at all, if the exchange must be limited to speed of light.
This is the source of the flatness problem. What can account for two bodies of plasma that had never, ever, exchanged any information, in any form, directly or indirectly, before now; and yet appear to having started at essentially the same initial condition and followed essentially the same evolution at the same rate up to now? Random chance certainly isn't convincing. In essence, what could homogenize plasma faster than light could travel?
The inflation model essentially does away with the problem by doing away with the assumption that the rate of universe's expansion had always monotonically decreased. It postulate the rate of expansion actually experienced a massive surge (inflation) shortly after the big bang. This means the visible horizon from any arbitary point in the universe did not monotonically increase with respect to space. Instead, it began very large, then it radically shrunk as the universe began its massive inflation of expansion. When the inflation ended, the visible horizon began to increase again. Yet even now, our visible horizon had not quite reached the size it attained before the inflation. Consequently, when something enters the visible horizon of another thing now, that is NOT the first instance in the entire history of the universe when these two things could have exchanged anything, energy, information, etc. If there could have been communication between plasma before they became visible to us, then we can see how conditions in plasma can homogenize and their evolution could have been synchronized.
Neither the original big bang, nor the inflation model actually postulate the universe has to be homogenous. But inflation model can explain why regardless of whether the universe is homogenous, it should appear very close to being homogenous from our ventage point.
