A squashed beach ball dark matter halo around the Milky Way eh, Ron ?
I'm not sure the modellers have considered such a shape yet in their calculations for rotation curves. (At least I haven't seen any such model shapes, yet).
Hi Malcolm:
The calculated mass attributable to Dark Matter absolutely swamps and vastly outweighs normal matter. The 'Trillions of Earths' discovery is still miniscule compared with the required mass.
Cheers