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I thought I understood this but now question my understanding...........

I don't know how to be explicit with this question in fewer words. Any hel=
p in showing where I'm thinking wrong appreciated.

Suppose humans had been monitoring the universe for 3 billion years now. =
=20

So, we had records from an age of say, 10.7, 11.7, 12.7, and now, 13.7 bill=
ion years, where each of those were the observed age of the universe to the=
CBR veil, beyond which we cannot observe optically. So we have 3 billion =
years worth of observational data forming 4 data points for the distance to=
the CBR, and, galaxies that formed from the ancient CBR gas.

Hopefully the following helps illuminate my error:

At universe age 10.7E9 years, first data point, the light reaching us from =
the CBR would have traveled, well, 10.7E9 years in time and would have trav=
eled 10.7E9 Lyr distance to reach us.

At age 11.7E9 years, the light from the CBR would have traveled for 11.7E9 =
years. And, light from the CBR a billion years earlier would have now form=
ed into infant galaxies, 1 billion years old. Light from those galaxies wo=
uld have traveled 10.7E9 light years to reach us.

At 12.79E9 years age of the universe, the light from the CBR would have tra=
veled for 12.79E9 years to reach us, and we would see galaxies from the pre=
vious two epochs, now at universe age 1 billion and 2 billion years old. T=
he light from those galaxies would have traveled 11.7E9 and 10.7E9 years to=
reach us.

Finally, today, we observe the CBR as having come from the last scatterings=
of the big bang when the universe became transparent about 13.7E9 years ag=
o and we today call that the age of the universe. =20

We would still observe the evolution of galaxies that formed out of the CBR=
gas from epoch 1, 2, 3....with today being epoch 4.

The young galaxies observed would have emitted their light 10.7E9, 11.7E9, =
and 12.7E9 years ago.

The problem is, the galaxies at 10.7E9 light years away haven't moved in ra=
dial distance over the 3 billion years of observations.

What's wrong?