Gravity
Gravity keeps the planets together
The force that keeps all of our planets in rotation is gravity.
The Sun has a powerful gravitational pull. This, combined with the velocities of the planets, keeps the planets in orbit.
The gravity of there star keeps them on path and a planets moon is sun around by its planets gravitational force
The force of gravity between the planets and the sun keeps them in orbit and prevents them from flying out of the solar system. The sun's gravitational pull keeps the planets in stable orbits around it.
The Sun's Gravitational pull keeps the planets orbiting it, not flying into deep space.
Gravity and motion. Gravity pulls the planets in and keeps them from flying away, while the velocity of the planets keeps them from being sucked in completely.
Actually, it's the gravity of the sun that keeps the planets in orbit around it. The force of gravity between the sun and the planets causes them to be pulled towards the sun, while their momentum keeps them moving in a circular or elliptical path.
It keeps them in orbit.
The Sun's strong gravity keeps all the planets in orbit around it.
As the planets orbit the sun, its gravity keeps them from colliding
As the planets orbit the sun, its gravity keeps them from colliding