🚀 go-pugleaf

metares@well.sf.ca.us (Tom Van Flandern) says:

> DOCTORJ@SLACVM.SLAC.STANFORD.EDU (Jon J Thaler) writes:

>> If two test particles are placed at rest wrt each other, the Hubble
>> expansion will not cause them to begin to move apart.  That is, the
>> expansion of the universe does not induce any effects that would be
>> interpreted as forces.  Thus, there is no observable effect on bound
>> systems such as the solar system, hydrogen atoms, galaxies, etc.

> Are you saying that galaxies are not really moving apart?  That a tape
> measure connecting galaxies would not continually play out?

No, I'm not saying that.  I am saying that the Hubble recession is a
result of initial conditions, not of repulsive interactions between
the objects or of "dragging" by expanding space.

Consequently, (as I said above) if the initial conditions are zero relative
motion, the Hubble expansion will not create any.  The subsequent motion
of the particles is described solely by their conventional interactions
(electrical, gravitational, etc).

> If so, I think
> your view is in conflict with the big bang theory.  If not, then my
> question stands: why does the space between galaxies expand at the Hubble
> rate, but space in the solar system does not?  -|Tom|-

My view is in agreement with the BB, and your question has been answered.
Space doesn't "expand" the way you suggest.