Re: Dark matter/energy - is it real?

: Michael Ash <mike@xxxxxxxxxxx>
: This is related to a more practical question wrt halos and solar systems.
: In this thread, an analysis was given of the solar system, where basically
: the Sun was at the center of the sphere, and d was the theorized local
: density for dark matter. This gives a (small) additional attractive force
: to all other bodies in the solar system towards the Sun. Yet if you center
: the sphere on the galaxy, it's clear that everything falls towards the
: center of the galaxy and there is no force towards the Sun. Again,
: something here is obviously wrong, but what is it?

I'm not sure I follow. The analysis wrt the sun makes
simplifying assumptions that turn out not to be the case;
namely, that the gravity from the mass distribution outside the
solar system cancels. It doesn't, because the distribution outside
the solar system is not a sphere.


Wayne Throop throopw@xxxxxxxxx http://sheol.org/throopw
.

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