Gravitational pull
The Sun's gravitational force controls all the orbits of planets and other objects that orbit the Sun (dwarf planets, asteroids, comets, meteors).An object without a force acting on it travels in a straight line, But the Sun's gravity causes each object to accelerate towards the Sun, as described by Newton's second law: force = mass x acceleration.The acceleration causes any fast-moving object to curve towards the Sun, as Newton discovered using calculus. This is a permanent process with the object in a stable orbit unless disturbed by a collision of some sort.
The force that keeps planets in orbit is gravity. Gravity is the attractive force that exists between two masses, such as a planet and a star, that causes them to be drawn towards each other. In the case of planets orbiting a star, gravity keeps the planets in their elliptical paths around the star.
They are held in place by the gravitational force of the sun.
Gravity is the force that keeps planets and moons in orbit. The gravitational pull between the planet or moon and the object they are orbiting around, typically a star like the sun, is what keeps them moving in a stable path. This balance between the gravitational force and the object's inertia causes them to continuously orbit in a closed path.
The sun is a huge mass, 109 times bigger than the Earth. A mass this large has it's own gravitational pull, just as Earth does. The sun pulls all the planets into line so that they can get proper sunlight and life forms on them will not die. so, the cause of the orbiting of the planets is the suns gravitational pull.
Gravity. Specifically, the gravity of the Sun.
Unfortunately, you neglected to include the list of allowable choices that "follows" the question. Still, I know the answer. The force that keeps comets in closed orbits around the sun is the one that has the same effect on the planets; gravity. The only difference is that the orbits of the long-term comets are much more 'eccentric' (long and skinny) than those of the planets, so they have much shorter minimum distances from the sun, and much longer maximum distances, than planetary orbits have. So, the correct awnser is Gravity.
The gravitational force between planets supplies the centripetal force that causes them to orbit each other.
Gravity is the force that connects the solar system to the sun.
friction
That would be the gravitic force, or you could say 'the force of gravity'.
The solar system's planets, planetesimals, asteroids, and comets are held in orbit by the force of gravity, the mutual attraction between these objects and the Sun.
The Sun's gravitational force controls all the orbits of planets and other objects that orbit the Sun (dwarf planets, asteroids, comets, meteors).An object without a force acting on it travels in a straight line, But the Sun's gravity causes each object to accelerate towards the Sun, as described by Newton's second law: force = mass x acceleration.The acceleration causes any fast-moving object to curve towards the Sun, as Newton discovered using calculus. This is a permanent process with the object in a stable orbit unless disturbed by a collision of some sort.
The force that keeps planets in orbit is gravity. Gravity is the attractive force that exists between two masses, such as a planet and a star, that causes them to be drawn towards each other. In the case of planets orbiting a star, gravity keeps the planets in their elliptical paths around the star.
of course it does, its gravity is keeping all of the planets, asteroids and comets orbeting
Gravity.Gravity.Gravity.Gravity.
The Sun's gravitational force controls all the orbits of planets and other objects that orbit the Sun (dwarf planets, asteroids, comets, meteors). An object without a force acting on it travels in a straight line. The Sun's gravity causes each object to accelerate towards the Sun, as described by Newton's second law: force = mass x acceleration. The acceleration causes any fast-moving object to curve towards the Sun, as Newton discovered. This is a permanent process with the object in a stable orbit unless disturbed by a collision of some sort.