Anything else and you might as well believe in Warp Drive.
The Doppler Shift may be observable fact, but when one observes a phenomenom that seems to be occuring at a certain distance that should have a specified Red Shift and DOES NOT, then one MUST start examining one's assumptions.
Several observations from the last few years are causing a serious re-thinking of the assumptions behind the velocity explanation for the so called Doppler Shift. The observation of objects that theory says only existed billions of years ago with red shift associated with much younger objects, the quantification of the red shift itself, the subject of this article, all force us to re-evaluate our assumptions.
Applying the Doppler Shift to astronomy involves the assumption that observed tonal changes (apparent wavelength) of sound from approaching and receeding sound sources is analogous to light from distant objects. Perhaps this is a falacious analogy.
The acceptance of the Doppler like velocity explanation for the observed red shift assumes that the conditions we experience in our local neighborhood are the same conditions elsewhere... which may be a very provincial view. For example, velocity is actually composed of TWO qualtities... distance and time. Perhaps it is TIME that is varying rather than distance! Our assumption that time proceeds at he same rate everywhere in the Universe is just that... an assumption. It may be that the farther away from any observational point, the passage of time is faster. We have no way of actually checking this assumption. An increase in the passage of time would distort both our measurement of velocity, distance, AND frequency.