The Solar System. In capital letters like this, the phrase refers to OUR solar system, back before we knew that planets are apparently quite common. The term "solar system" in lower case can refer to the system of planets and solid bodies orbiting any other star.
the small rocky bodies that vole around the sun are called plantets
It keeps them in orbit around the sun.
The solar system
The collective name for the sun and the bodies that revolve around it is called the solar system.
Heavenly bodies revolve around the sun because of the gravitational pull that the sun exerts on them. This gravitational force keeps the planets and other objects in orbit around the sun, following a path determined by the balance between the object's inertia and the gravitational pull of the sun.
Comets
the small rocky bodies that vole around the sun are called plantets
The sun and all of the bodies that circle around it including planets and moons make up the solar system.
Planets
The solar system
Yes, the gravity of the sun causes all celestial bodies to orbit around.
The moon does not orbit directly around the sun.