- #36
Chalnoth
Science Advisor
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Not really. There isn't a "distance to the CMB", as the CMB is everywhere. What it means instead is that when the CMB is observed from a reference frame at rest with respect to the CMB, the observer doesn't see any particular direction where there is a redshift or blueshift: it looks pretty much the same in every direction.Lino said:Chalnoth, I understand most of what is being discussed here, but in relation to your post
could I ask you to explain this a little further. I appreciate the second part of the post (that this isn't a hard and fast rule, but a general statement based on large scales), but do you mean that the distance to the galaxy is growing at the same relative rate as the distance to the CMB is growing, as the universe is expanding? Alternatively, if this statement is less about distance and more about left / right /up / down relative to the CMB, could you point me at something to read about how this has been measured.
Regards,
Noel.