Is it possible that redshift, though correct in it's theory, is not what we are viewing in terms of expansion of the universe? Is it possible that what we think is redshift is actually the strength of the light/energy fading, being absorbed or blocked over hundreds of millions of light years? I ask this because it seems to me that in the vast chasms of space between the observer and the observed, there have to be a large number of free-roaming particles of dust that would diminish the light, if only by a minescule amount at a time. Thus the light becomes dimmer, or darker. Is there any possibility that the universe is not actually expanding like we think it is based on the Redshift theory? Help me please because I'm a bit thick.