I have a strange question that I can visualize but not find anything to really answer my query.
The Newtonian law states that something in motion tends to remain in motion. We all know about Friedmann expansion and more accurately (maybe) an acceleration phase to boot.
It is possible that as gravity weakens, spacetime can expand in an exponential way? I can see straight away this particular question would rely on a ''force applied'' to a universe, often translated as the cosmological constant which is seen to drive a continuous acceleration.
Is it possible there is some unseen connection with the weakening of gravity that may result in the acceleration of a universe?
I should mention, a recent study I read just the other day, seems to calculate the early universe expanding at a slower rate than the late epoch, which is in disagreement with standard interpretation. Anyway, my guess is that it is not as simple as gravity weakening giving rise to an acceleration, but I am curious as to what others may think.