In the hope that it may provide information on the development/evolution (if any) of dark matter over time, are there any differences (eg. in structure or concentration) in the dark matter at large radial distances from earth compared with closer radial distances.
I learnt from this question How does the amount of dark matter in measured galaxies vary? that “the smaller a galaxy is, the larger its amount of dark matter is”. But this appears to be due to the erosion of gas in the galaxies rather than developmental changes in the dark matter which I’m looking to understand.