The Sun's gravity keeps the planets orbiting the Sun.
The force of the Sun's gravity keeps them in their orbits.
Gravity is what keeps the planets going in their orbits. If gravity just stopped, then the planets would go flying in a straight line tangent to their orbit.
Their immense gravity keeps the gases there.
The sun's gravity keeps the earth and the other planets in orbit around it
gravity?
gravity
Gravity keeps the planets together
The force that keeps all of our planets in rotation is gravity.
Gravity
It keeps them in orbit.
Force of gravity is what keeps the planets form colliding.
the suns gravity keeps the planets in orbit
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.
The gravity of there star keeps them on path and a planets moon is sun around by its planets gravitational force
The gravity that keeps the planets in orbit is the sun's gravity, which is a product of the sun's mass.
gravity
Gravity