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.
power
Gravity.
The Gravity and Rotation in our solar system.
The suns gravitational pull.
The force of the Sun's gravity keeps them in their orbits.
It keeps the solar system together because without it we would be floating around. :)
In our solar system, the sun provides heat and light to the planets; also, the gravitational attraction of the sun keeps the celestial bodies in the solar system in orbit. Without the sun, there would be no solar system.
WelL mY tEaChEr InForMeD Us ThAt wHaT KeEPs tHe sOLaR SySTeM TOgEthER aRe thInGs lIke gRavItY,, FrIctION,, aND TENsIOn[[ But mOstLy gRaViTy kEEpS it AlL ToGeTHer]] :)
Gravity is the force which keeps them there.
it keeps it in orbit
do it by your self dums dood
the gravitational force of the sun