Right, that's my point. An EM field in(!) space. Not a property of(!) space.
DE is certainly a property of spacetime.
Aha, yes. Well I think that as long as we only have models for things like gravity or electric fields (spooky action) but do not have a real understanding of how this spooky action works then conclusions we draw based on this fundamental lack of real understanding of gravity must not be taken as facts. In other words: What now seems an accelerated motion of galaxies may turn out to be a false interpretation once we understand how spooky action works. Same may be true with dark matter.
The expansion we observe is not due to any motions of gravity.
It is a cosmological redshift caused by the intervening spacetime expanding.
Any Doppler redshift/blueshift we observe is just small in comparison and due to local gravity effects in groups of galaxies.
Spooky action at a distance is a quantum effect, and yes, you are correct...as yet it remains largely a mystery.
Seems strange to me. Why cant the BB just be a big bang in a space that already existed and independent of any already existing time?
The BB and GR totally compliment each other, one of the reasons why they are seen as "near certain", and that includes the assumption of the evolution of space and time [henceforth known as spacetime] from a hotter denser state.
The BB actually ceases to predict at t+10-43 seconds after the initial event...the Planck/Quantum level in fact, and we then assume back that extra tiny bit [10-43 seconds] to the supposed Singularity.
In other words from 10-43 seconds, space and time [as we know them] evolved as we see and experience them today.
Anything else is speculation.
The GR model seems correct. But all experiments have only been done in “near-Earth” gravity conditions. Everybody seems convinced these results can be extrapolated into the vast interstellar and inter galactic empty voids. I doubt that, or at least that has not been scientifically proven.
GR works totally well over larger scales. This was shown in the viewing of the eclipse by Eddington, and the subsequently observation of spacetime warpage and the geodesic path of light from a particular star.
We also assume the laws of physics to be constant throughout the Universe as well as being Isotropic and homegenous over large scales.
Logical extrapolation of what we already know, and we have no reason to doubt those assumptions as yet.
I just feel I can think of a much more elegant explanation. I mean lets look at the hydrogen -> helium fusion. Helium is lighter than the four original protons. The excess mass is transferred into energy. What if instead of the nuclear strong duct tape the helium nucleus is just 4 protons fused together in a more efficient configuration where there is less matter required?
Yes, I know: 2 protons and 2 neutrons. But originally they where 4 protons.
This is in fact the reverse argument as my last argument above. I believe it is more logical like this: When you smash for example a proton, the energy of the proton gets fragmented and those fragments condense by a kind of cohesion effect to the next smaller more or less stable possible particle ?
The balls in your court.
You need some either some experimental evidence, observational evidence, logical theoretical applications of what we already know, follow the scientific methodology and then undergo peer review.
Best of luck.
Seriously though, what do you think cosmologists and the many giants in science have been doing?
They have access to a myriad of state of the art equipment, probes like Planck, and the HST and Spitzser.