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The gravitational force between objects depends on the mass of the objects and the distance between them. Jupiter is the most massive planet in the Solar System, so it would have the strongest gravitational force among all the planets. But it is not the most massive object in the Solar System- the Sun is. The Sun is more than a thousand times more massive than Jupiter; it exerts a stronger gravitational force on all the planets than Jupiter does. This causes the planets to revolve around the Sun, instead of Jupiter.