On 4/21/2025 3:57 PM, Russell Standish wrote:
On Sun, Apr 20, 2025 at 06:30:31PM -0700, Alan Grayson wrote:
One possible explanation is that it's finite in spatial extent and began with
non-zero angular momentum. So the whole thing rotates, and expands due to
centrifugal force. Data from the JWST suggests the universe as a whole is
rotating. AG
If the universe is all that it is, then how can it be spinning? What
is it spinning relative to? Cf Mach's principle.
Mach's principle is already violated by gyroscopes. There is no delay as
the angular momentum interacts with distant masses. In GR rotation and
acceleration are absolute; something that Einstein found disappointing
since he admired Mach and hoped to verify his ideas.
Brent
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