Suppose everything in the universe (including space) were to expand uniformly a thousand times larger. How could we ever know it?
We would be able to analyze the ensuing redshift of objects far away from our earth. While objects may have increased in size 1000-fold, other fundamental constants that dictate the laws of the Universe would remain constant.
surely thats just a silly question, because if, as science holds the universe is constantly expanding, then it would mean that there is an area in which nothing exists...not even space...if you think about that 'nothing' exists...its an oxymoron Therefore we can think that existence is eternally big, and we can never fully comprehend that because it is so vastly existential to us.
it is a good question to ponder on, gravity. the "answer", if any would probably have to be outside of the perimeters of the question itself, wouldn't it?-like the question of the existance of "size", outside of the comparitive organization of our minds.
I take it by "expand uniformily," you mean that everything, including ourselves and measuring devices, gets proportionally larger. The answer, then, is that we couldn't know it. The problem has been adressed by Mach and Poincare.
time expands, because space is time, and the observer/soul stays the same size, because it is not physical. unless you think it is; i don't. whatever .
change in gravity levels since distance is exponential in the equation. i think the equation was gravity (newtons) = k *m1*m2/r^2
By the way, what I just posted is a perfect example of why metaphysical/ religious reasoning is incredibly stupid. Compare my answer to Joel333's answer a few posts up.
