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Originally Posted by N0B0DY  I think the implication holds for the very reason you give, Greg. That any massive particle travelling at subluminal velocities can't exceed "c," so light will always be measured at the same acceleration rate. To light itself, there would be no time, but only pertains to the observable universe.
Space is a part of the universe, though, and therefore would represent the true universal time. For space itself, there would be absolutely no concept of time insertable.
What do you propose is the speed of spatial expansion, btw? |
Nob .... am not sure about the rate of expansion. If expansion exists everywhere, and I believe it does, but is overcome by gravity at the galaxy cluster level then the rate of expansion would climb an exponential curve according to the distance between the two referenced objects.
What I mean here is that if you stand 100metres from me and Lloyd stands another 100metres from you so that he is 200metres from me, then if all the intervening space is expanding or increasing Lloyd will disappear from my view at a much greater rate than you would.
As our cosmic horizon can only reach to the age of the Universe, anything outside our cosmic horizon must be expanding at many, many times light speed.
I am willing to listen to other explanations on this, this is just my own take on it.
As to why this is happening ... my own guess is that if they solve the 'dark energy' mystery many things will become much clearer than they are now.
cool bananas ... greg
