Quote:
Originally Posted by wodin
I have often speculated that if another universal constant, the speed of light, were not actually constant, but instead varied with the age of the universe; the red shift, usually attributed to Doppler Effect could be explained for a non expanding universe.
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I'm currently reading "Parallel Worlds" by Michio Kaku - he says there is too much helium in the universe for there not to have been a 'big bang' to create it (too much for it to have been created by other means). So that seems to be another indication of an expanding universe, emerging from a singularity.
The ScienceDaily story is intriguing - it sounds rather like ideas of different laws of nature existing in other universes.
"it might be that whilst our observable part of the universe favours the existence of life and human beings, other far more distant regions may exist where different laws preclude the formation of life, at least as we know it."
I'm never quite sure what 'observable part of the universe' means - I know it relates to what we could possibly see on Earth in terms of various froms of radiation reaching us from the rest of the cosmos - but it doesn't seem clear what fraction of the actual Universe that represents.
According to the
Wiki article the observable universe could be a miniscule fraction of the whole; or the observable universe might actually be bigger than the actual universe
.