Abstract

I have been working on the fundamental laws of physics for a long time. During this time, I realized that gravity does not work like Newtonian and this misleads us into Dark Matter. The relationship between distance and gravitational force varies with distance. The gravity equation varies with some value between $1/r$, $1/r^2$ or $1/r^4$ for the farthest or closest available distance. However, empty space also has a gravitational and expansion effect. This study aims to analyze and discuss these two phenomena. This work explains observational galaxy rotation curves without dark matter.