Robuta

https://mspace.lib.umanitoba.ca/items/a394b686-9f88-4b69-84cc-d270f5ff33c9 Spiral galaxy HI models, rotation curves and kinematic classifications Although galaxy interactions cause dramatic changes, galaxies also continue to form stars and evolve when they are isolated. The dark matter (DM) halo may... spiral galaxyrotation curveshimodelsclassifications