I've heard many sermons and lectures that invoke the physical size of our Solar System or Universe but one thought which I had was it could all be irrelevant anyway. Yes we will one day receive a glorified body but also who is to say that we will not be in a Spiritual environment where space has no measure or constraint. Just like when you consider eternity past and eternity future then time drops out of the equation for one thousand years is as one day and one day as a thousand years for there is no standard or measure of time to compare to infinity or endless boundaries.
I have no doubt that whatever has been prepared for those Saints of God in the after life that it will be far more sufficient than what we would need and exceedingly better than anything we could expect or envision. Just a personal opinion mind you.