It acts at long distances.
Gravity is the force which directs the path of the planets.
Mass and gravity
The dominant force causing Earth's tides is the gravity of the moon as it revolves around us.
It is each planet's surface gravity.
Gravity I believe. If not, try orbitity.
Not all of the planets are held by gravity.
Gravity is the force which directs the path of the planets.
The force of gravity.
The force that keeps all of our planets in rotation is gravity.
Planets and stars have gravity.
i think its is by the force of gravity planets are kepet orbit
Gravity.
The pull of gravity.
gravity
Mass and gravity
Gravity exists on all planets, though the force differs depending on the mass of the planet.
That's "centrifugal force". It's not a "real" force like gravity, but is a convenient way of describing the effect of the inertia of the planets. (The planets would move in straight lines if they were not in a gravity field.)