The motion of the earth relative to the cosmic microwave background radiation (CMBR) is in a different direction compared to the motion of earth relative to the aether that was determined by Dayton C. Miller, so obviously, our so called big bang universe is moving relative to the aether.
Its believed by some cosmologists that there is an event horizon around our "universe" (everything that came from the big bang that made our universe). I remember an astronomy professor that taught one class I had back in the 1980's showed us how to caculate the Schwarzschild radius of our universe (the point where the escape velocity equals the speed of light) and concluded that there was an event horizon around our universe. Black holes have event horizons. Some believe there is nothing outside the event horizon of our universe based on anthropic principles, ie. they think nothing can be detected outside of this event horizon.
If there was an end to space then that would mean you could measure a velocity relative to a point in space (at the end of space) and this would be inconsistant with Newtonian and Galilean physics, therefore space must be infinite. The aether is probably also infinite and fills space everywhere. Time must also be infinite, ie. eternal. How can something come from nothing?
If everything is infinite and eternal, why hasn't there been a "universal" heat death? Think of the total collection of processes in all of existance represented by a single collective Carnot cycle, with a high temperature heat reservour and a low temperature heat reservoir with heat moving from the high to low temperature heat reservour and part of it being redirected to useful work. If both the high and low temperature reservours were infinite then heat can move from the high T to low T reservours and entropy can increase forever and there never would be a heat death of all of existance.
https://en.wikipedia.org/wiki/Carnot_cycle
If everything is infinite and eternal then space and aether preceded God if God exists. Therefore God didn't make everything.