The Role of Gravity in Cosmic Stability

Gravity is the fundamental force responsible for the stability of celestial systems across various scales, from solar systems to entire galaxies. This dissertation examines how gravity acts as the primary stabilizing force, exploring its differing dynamics depending on the system's size. In solar systems, stability is maintained by the overwhelming gravitational pull of a central star. On a larger scale, such as in galaxies and star clusters, stability is the result of the collective gravitational force of all components, including a significant contribution from dark matter. This paper highlights how gravity acts as the "cosmic glue" that holds the universe together, either through the dominant pull of a single massive object or the combined force of a vast collection of matter.