On 7/14/2025 11:13 PM, Alan Grayson wrote:
On Monday, July 14, 2025 at 10:52:44 PM UTC-6 Brent Meeker wrote:
Galaxies formed waaay after the Big Bang and we can't actually
observe anything earlier than the recombination around 400,000yr
after the BB.
I am aware of that. Nevertheless, the red shift of distant galaxies
indicates that they were receding at huge velocities, obviously after
they were formed.
They're receding at huge velocities from us...or are we receding at huge
velocities from them.
According to Inflation theory, there was a HUGE, HUGE expansion
immediately after the BB, which lasted for a TINY, TINY fraction of
the first second. This is generally accepted within the physics
community since it answers some pressing issues such as the uniformity
of the CMB. AG
I don't know what JKC said about the speed of early expansion, but
it seems to be increasing so it will be faster in the future than
it was in the past.
He claimed the early rate of expansion was exceedingly slow, and that
the red shift we now observes indicates the current receding velocity. AG
You do realize don't you that the uniform Hubble expansion means the
further away you are from X, the faster you're "receding" from X. And
since it's been a long time since galaxies formed they used to be closer
together and hence were not "receding" from one another as fast, even if
the expansion of the universe (the Hubble constant) was the same. I
think you're confused about "expansion rate" (the Hubble constant) vs
"recession rate".
Brent
Brent
On 7/14/2025 7:30 PM, Alan Grayson wrote:
Given the fact that light from very distant galaxies is hugely
red-shifted, and the general belief that light we're observing
today from those distant galaxies, was emitted when the universe
was very young, one would conclude that the rate of expansion at
that time was huge. But Clark disputes this conclusion. He claims
the opposite; that the rate of expansion in the very early
universe was exceedingly SLOW. If that's the case, can we
conclude that the theory of Inflation must be false, insofar as
it alleges a huge initial expansion rate to account for the
observed uniformity of the current universe? Moreover, Hubble's
law confirms that as we go back in time, the universe was
expanding faster than it is today, again apparently confirming
the Inflation theory of a very high initial rate of expansion
(ignoring recent findings the the rate of expansion is iagain
ncreasing). AG
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