Here is my contribution;
First a little background
"The Copernican principle is a built-in assumption of the current favored solutions to Einstein's equations, called the Friedmann-Robertson-Walker space-times."
聽聽 聽 Uniform laws of physics, uniform speed of light, why? What is the underlying cause?聽
聽聽 聽 The constant force that creates action and expansion to increase acceleration of the universe is the effect generated by all matter decaying into space itself. The force of the big bang was caused by a critical release of the monopole gravitational field by the singularity. Each quanta of mass and energy not converted initially into monopole gravitational waves 聽is still being converted and forming in-phase 聽wavefronts. This is the basis for the continued accelerating expansion of the changing universe converting all mass and energy into the monopole gravitational wave. It is this law of motion: Force = Mass x Acceleration that predicts the increasingly accelerating universe as the force is constant and the continuously decreasing matter is increasing in acceleration.
Two laws are new to you....
1).All matter becomes space via continuous release of the gravitational field.
2). Fields becoming field fronts create tension. That is gravity and the unknown prediction is that the universe is flattening. Increasing in acceleration and flattening.
Kinda like from a ball to a disc to a flattening plane increasingly accelerating at the oldest stars, the visible edge of the the universe.