Comparing Gravity Between the Sun and Planets Gravity is the force that attracts objects towards each other, keeping planets in their orbits around the Sun and maintaining the stability of our solar system. Let's compare the gravitational strength of the Sun with some of the major planets in the solar system. Sun's Gravity: Sun: The Sun has an enormous mass of approximately 1.989 × 10³⁰ kilograms, with a surface gravity of about 274 meters/second². This immense force keeps the planets in their o