And to be clear it was thought that the Hubble parameter was decreasing
asymptotically to a constant value. But /even with the Hubble parameter
constant/ a receding galaxy is slower when it's close and recedes faster
as it gets further away. The recession speed is proportional to the
distance; that's Hubble's law.
Brent
On 5/31/2025 7:39 AM, John Clark wrote:
On Sat, May 31, 2025 at 10:17 AM Alan Grayson <[email protected]>
wrote:
/> doesn't Hubble's law imply the universe was expanding faster in
the past/
*NO. Until the late 1990s everybody, including Edwin Hubble, figured
that the expansion of the universe must be slowing down due to
gravity's attraction, but then we discovered the expansion is actually
accelerating, and nobody knows why. So the universe is expanding
faster now than it was 10 billion years ago.
****John K Clark See what's on my new list at Extropolis
<https://groups.google.com/g/extropolis>*
*
*
rbb
*
*
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