Shrinking universe

[Jacques]

Here is a foolish idea:

What if the redshift of distant galaxy is not caused by the expansion of space, but by the contraction of matter ?

Wouldn't it be equivalent ?

Let me explain a little how the contraction of matter can give the redshift.

At the time a galaxy 1 billion light year away, atom where a lot bigger and where emiting light with a lot bigger wave length. While it was traveling toward us our local group was contracting and now the same kinds of atoms are emitting at a much shorter wave length.

I think that you can get it. I know I have nothing to support that hypothesis, but I am interested to know if it can explain all observations we have on the distant universe

[Jacques]

No comment...

Let me rephrase it:

From the point of view of a gravitationnaly bounded galaxy cluster the universe is expanding.

From the point of view of the universe, gravitationnaly bounded system contract.

Is it equivalent ?

[AlphaSheeppig]

Your logic is correct, but why would there be a perfectly uniform contraction of matter? It would imply some sort of change in the universal constants (like Planck's constant) and we're not observing any change in those. Thing's that are governed by these constants like electron energy levels are not changing, so we can assume that the universe is expanding and it is not matter that is contracting. Of course you could argue that all the constants are changing and that they only appear constant because our units we use to define them are changing too, but lol... Occam's razor...

[Jacques]

why would there be a perfectly uniform contraction of matter

Because of gravity.

 

Yes Occam's razor.

No need for a big bang

Accelerated contaction because thing are getting closer. No need for dark energy to accelerate the expansion...