On Oct 11, 2:09 am, qzectb wrote:
Venus does not have moon to spin it like Earth, there are no competing
differential forces so yes it has a dark side just like our moon
(although it may be illuminated at some time due to rotation)

I was comparing most other planets in our solar system with moons
against those
without those with moons appear to have far shorter rotational periods
than those without.

The Earth does not need the moon to "spin it". Actually, tidal forces
by the moon act as a form of drag on the earth's rotation, as the moon
only orbits the earth once every 28 days. It's because of the Earth's
strong tidal action on the moon that the moon is now "locked" with one
side toward the earth, although it certainly didn't start out that
way.

Would the Earth be spinning now if it did not have one?
The same should have applied to the Earth then if frictional forces of
the atmosphere were the only thing that causes these things, after all
it has been around 4.3 billions years since Earths creation.

Earth and Moon are a couplet pair that revolve around each other that
follow an average orbital path and not a planet that follows an
orbital path with a moon rotating around it.

Over time, the earth's rotation is slowing down due to the moon, and
over time the moon's orbit is gaining angular momentum from the earth,
which is putting it into a higher orbit.

Generally speaking, every planetary body comes into existence with
considerable rotation.
Why?

Is this something to do with relativity and the warping of spacetime
as gases compress
to solid objects over time? Or the changing permeability and
permitivity due to warping or what?

Only if something acts to stop it, like tidal
forces from the sun, will the planet come to have a "dark side".