Did Hubble can it wrong?

[Surgenator]

You misunderstood me. I said there is evidence to support the the hubble constant that is independent of the wavelength shift, i.e. paralax, standard candles, etc... I was NOT saying that the universe is not expanding nor the redshifts are unrelated.

Okay, thanks for the clarification.

Yes, if we go through the route of parallax, standard candles, etc... we get that the universe is accelerating. If you read my blog carefully, the point I'm making is that this acceleration can be derived theoretically strictly from GR - that the observation through the route of parallax, standard candles, etc confirms that is obviously a good thing otherwise GR is in trouble. So you've got two pictures: one is that the universe is expanding, labelled that the Doppler Effect; the other is that the universe is not expanding, but the photon still exhibit a redshift due to the fact they are moving against gravity. On first appearance, these two pictures seem to contradict each other, but Einstein Equivalent Principle says they are equivalent -- you can trade one with the other, the equations describing them are the same.

Gravitational redshift has a limit of how much redshift there can be. This limit is constrained by the mass of the star and its radius. If we took two identical stars that are at different distances from us, the amount of gravitational redshift should still be the same if we're sufficiently far away. If the universe was not expanding, then this gravitation redshift would be the main component for the redshifts and we would see the same redshift. However, we see different redshifts.

Also, if you look at whole galaxies that have different total mass but are at the same distance away from you, you would expect different amount of redshift if the universe was not expanding. We see the same amount.