About Hubble's Law

[Ignat]

If Hubble's law is fulfilled only in a certain narrow, by cosmic standards, area, then how can we rely on it when talking about the expansion of the universe?

 

[Catastrophe]

Of course, Hubble's Law, or Constant, is not fixed. It varies over time and distance.

I wonder why it was not realised earlier, that the proportionality which required FTL travel, could be countered by noticing that FTL travel might be used to invalidate Hubble's Law. And, imho, there is something a little dubious about FTL expansion of a space(time) universe . Does this not smack somewhat of the reinvention of the aether? Either space(time) is an empty nothing, devoid even of Newton's coordinate framework, or there is a "something", some substance, and one expanding at that.

I would welcome comment/correction on these points, but, please, not repetition of the problematic "explanations". I believe that the most likely answer is, at the present time, we do not understand (some of) the suggested "explanations". Please prove otherwise.

Cat

Addendum: I am currently reading "The Planets" by Andrew Cohen with Brian Cox. The Grand Tack of Jupiter, and movements of Saturn are mind--boggling to one brought up on a forever unchanging system. I mention this, certainly NOT in disbelief, but in the mammoth changes which are coming to light in very recent years. With Hubble and JWST, I think we must prepare ourselves for more stupendous discoveries. For starters, the Solar System is not rusting in eternal clockwork movements, as we have believed for hundreds of years.