Their speed, their mass and the force of gravity.
There is a force pulling the planet and the Sun together, but the Sun is massive and hardly moves. The planet, on the other hand, accelerates continuously towards the Sun and this is seen in the curvature of its orbit. The planets' orbits are very stable and not likely to change in a few million yeas.
The Sun's Gravitational Pull, combined with the planet's velocity.
The Sun's strong gravity keeps all the planets in orbit around it.
Gravity.
Gravity.
Yeah
The Sun's strong gravity keeps all the planets in orbit around it.
The Sun has a powerful gravitational pull. This, combined with the velocities of the planets, keeps the planets in orbit.
The pull of the Sun's gravity.
Because the Sun's gravitational pull keeps them in orbit.
The two forces that work together to keep the planets in orbit around the sun are gravity and inertia.
The gravitational attraction by the Sun.
The suns huge gravitational force keeps the planets in an orbit around it.
gravity?