Dylan Tilley Posted about 2 years ago Is it possible that gravity, is a persistent illusion, created by the constant expansion of mass in the universe? It is possible to explain in simple isolation the effect of gravity relatively as expansion however there are many simple reasons why this theory is false; 1st the force of Gravity is not constant throughout space so objects would have to be accelerating at different rates to achieve the observable gravity fields, which would distort the stable geometry of the universe such as the relative distance between stars and planets second in order for the other forces in the universe to maintain their proportional balance as they have in nature for all of the history of the known universe the fundamental laws governing those laws would have to be in constant change to accommodate for the proposed continuous expansion. It is fundamental geometry that if you increase a linear dimension (lets say doubled) then the associated area goes up by that same scale squared (X4) and the volume by the same scale cubed (X 8) so phenomena that are proportional to the ratio of these quantities are limited to a particular scale. This is why cells only grow so large to maintain volume to surface area ratio for sufficient nutrient transport, or why dimensional analysis with Nondimensional numbers like Reynolds is so important in scaled models for testing like in windtunnel and tow tank tests. Therefore the uniform or even irregular expansion of space cannot explain gravity or other comoonly observed phenomena. I hope this answers your question. The simplest explanation is often the best one.