The exact nature of gravity remains unknown and widely debated despite the established theory of gravity (ETG) being more than a hundred years old. This paper presents a new theory on the cause of gravity and its effects. It demonstrates the shortcomings in the existing theory, including the lack of a full explanation of how matter warps space-time, the medium that fills empty space throughout the universe, as well as some inconsistency regarding the mechanism that causes one object to move towards another one. The new theory is then presented in two parts, starting with a description of the conditions necessary for one object to attract another one, followed by full details of the movement mechanism that is triggered when these conditions exist. The theory provides a complete explanation of gravity and its effect on matter.