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We hear that the universe is expanding, and this accounts for red shift as all objecsts are accellerating away from eachother.
But I have also heard that it is the space itself, of which the universe made, that is expanding - not that things are moving in that space.
If so, then the distances between objects as measured in this expanding space is presumably constant, since the "rulers" would also be expanding in that same space.
And in this case, there would be no red shift.
Clearly, I'm wrong, and I'm hoping someone can straighten my out on this.
This might relate to another puzzle I have.
I am told not only that things are moving away from eachother, but that things are accelerating away from eachother.
Since these objects are isolated, what is the constant force which is causing this acceleration?
Or, if we are way beyong Newton at this point, how is this accelleration caused?
Thanks again, Chris
But I have also heard that it is the space itself, of which the universe made, that is expanding - not that things are moving in that space.
If so, then the distances between objects as measured in this expanding space is presumably constant, since the "rulers" would also be expanding in that same space.
And in this case, there would be no red shift.
Clearly, I'm wrong, and I'm hoping someone can straighten my out on this.
This might relate to another puzzle I have.
I am told not only that things are moving away from eachother, but that things are accelerating away from eachother.
Since these objects are isolated, what is the constant force which is causing this acceleration?
Or, if we are way beyong Newton at this point, how is this accelleration caused?
Thanks again, Chris