Galaxies Have a Dark Matter Hallow, Right?

All galaxies have a dark matter hallo, which also rotates with the galaxy rit and that's why we have thi difference in what we between what we expect and what we actually observe. We can deduce the existence of dark matter also through the phenomenon of galactic lensing. Dark anand dark matter is is is massive. It has an attractive cuvitational force. And that's how we know there is something out there.