Even as the universe expands there will still be a part of it which was
close enough to us (in the distant past) that it is still within our
visible universe.
Brent
On 12/27/2017 12:17 PM, [email protected] wrote:
Since galaxies were formed after the CMB came into existence about
380,000 years after the BB, and those far away will wink out as they
cross the cosmic horizon, why doesn't the CMB also wink out? I know
the latter is reddening as the cosmos expands, and is ubiquitous, but
when the question was posed to me last night at a meeting in Pasadena
with former JPL colleagues, I didn't have a good answer. TIA, AG
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