Quote:
Originally Posted by Morepower
They say at an early point during the Big Bang it had to expand faster than the speed of light (expansion ?), just like that !
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Inflation, and actually there are quite a lot of observations that fit with it. I think many physicists thought it a kludge at first as well, but most have come round. I don't have the background to judge the validity of the evidence though!
I don't think the 'extra' dimensions are an inherent part of the big bang theory, they are one potential explanation for the properties of particles that we observe and also an explanation for the apparent appearance of the universe out of nothing. I also don't think any of the string or super symmetry theories are yet accepted by the majority as part of any 'standard model', but I may well be wrong in that.
I'm not sure anyone should be a 'believer' in anything, we can only go with the most plausible explanation that best fits our observations and allows testable predictions. One problem at the moment is that mathematical theory is well ahead of our ability to test it physically.