- #1
very_curious
- 20
- 0
Hi,
I'm trying to get my head around theories of the universe, and am wondering if Hubbles Law has been mis-understood.
I know that light from far away galaxies has been redshifted i.e. has lost energy.
But I'm not convinced that this means those galaxies are moving away from us.
What % of the energy loss can be put down to gravitational redshift?
And if galaxies might have more mass in them than we thought (as indicated by galaxy rotation curves), could all of the redshift be explained by the pull of gravity on the escaping light?
Cheers,
I'm trying to get my head around theories of the universe, and am wondering if Hubbles Law has been mis-understood.
I know that light from far away galaxies has been redshifted i.e. has lost energy.
But I'm not convinced that this means those galaxies are moving away from us.
What % of the energy loss can be put down to gravitational redshift?
And if galaxies might have more mass in them than we thought (as indicated by galaxy rotation curves), could all of the redshift be explained by the pull of gravity on the escaping light?
Cheers,