In message , Dave
writes

"dave blacker" wrote in message
om...
If the Universe is expanding, then all the galaxies must be moving
away from one another.

So how come there are such things as 'colliding galaxies'?

One would assume because 'a' galaxies gravitational pull is great enough to
affect another galaxy...

And because clusters of galaxies aren't expanding, so the members are on
orbits which occasionally intersect.
--
Rabbit arithmetic - 1 plus 1 equals 10
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