Uranus, Venus, and Planet X.
They are larger and so they have more gravity.
Gravity. The sun has a wide gravitational field, and so the planets in the solar system orbit around the sun, as they are caught in the gravitational field.
Gravity pulls in the sun and the planets to stay together in the orbit . The planets have gravitational force between them so they wont fall out.
the rule of gravity is the greater mass a planet is the stronger its gravitational pull is so the suns mass is so heavy that its gravitational pull is so strong it keeps all the planets in line
In our solar system, the planets Uranus and Neptune have about twice the gravity of Earth.
Since the Sun has the most mass of all the objects in the solar system, it has the strongest gravitational pull. If there were another object in the solar system with more mass than the Sun, the planets (and the Sun itself) would orbit it. If there were no Sun's gravity (or other gravitational forces) the planets would travel in straight lines instead of orbits.
The Sun's strong gravity keeps all the planets in orbit around it.
Gravity is what sets the planets in motion. The force that keeps them in motion is known as inertia in the law of physics.
Gravity holds the planets in their orbit
Gravity keeps planets in orbit around the sun. If planets were not subject to the gravitational attraction of the sun, they would fly off into interstellar space. In addition, gravity is also what holds planets together. If there were no gravity, the planets, and the sun, would disintegrate under the force of their own spin. There would be nothing left of the solar system but an expanding cloud of gas and dust.
The gravitational field depends on masses, and the distances to the masses. The gravitational field will be stronger close to large masses, such as the Sun and planets; but there is nowhere in space where you would be entirely free from a gravitational field. For example, if you go a thousand light-years away, the gravitational attraction of the entire Solar System would be insignificant, but you would still have the gravitational field of the Milky Way.
Uranus is one of the four gas giant planets of our solar system, and it is considerably larger than the Earth (although not nearly as large as Jupiter or Saturn, the largest gas giants) and it has a stronger gravitational field than the Earth.