🚀 go-pugleaf

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

> schumach@convex.com (Richard A. Schumacher) writes:

>> If one adds two test particles to the universe, the general expansion
>> does NOT by itself cause the test particles to move apart.  Subsequent
>> movement of the test particles depends on their mutual gravity and the
>> gravitational or electromagnetic forces imposed on them by other
>> matter/energy in the usual, non-cosmological ways.

> If the matter density is uniform, then the pair of test particles
> increases its mutual separation due to the appearance of new space between
> them, although both stay put in space.  Their motion in response to forces
> is superimposed on that cosmological "expansion."

You are wrong.  I challenge you to show a calculation, or give a reference
to one, which demonstrates that test particles (initially at rest wrt each
other) will move apart as a result of the expansion of the universe.