The Sun contains almost all the mass in the entire solar system which highlights its immense scale. Its structure is made mostly of hydrogen and helium that are compressed under extreme pressure. This enormous mass produces powerful gravitational forces. Because the Sun holds nearly all the mass, it controls the movement of every planet, moon, and smaller object in the system. Its gravity shapes all orbits and keeps the planets traveling along stable paths. Without this gravitational center, the

How Big is the Sun Compared to Earth? Facts About the Sun - AstroJunkies.com