If dark matter really does exist everywhere, and is constantly passing through our bodies, why doesnt this extremely dense matter affect regular matter? How are the atoms of our body not pulled by dark matter's gradational field? Also, if dark matter is thought to exist because stars in galaxies are moving too fast to be held in orbit by regular matter alone, why doesn't our solar system demonstrate those same properties if dark matter is everywhere? Why do the velocities of our planets drop the farther they are from the sun? Shouldn't our planets be affected by dark matter too?