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The mutual gravitational attraction between the earth and the sun is the force that keeps the earth in orbit around the sun. It's the only force required, which is lucky, because it's the only force that exists.
The force of gravity that they exert on each other, and the velocities of the Moon and Earth which is their "inertia".
The elliptical shape of each planetary orbit is the result of the adding together the forces of gravity, which tries to move each planet toward the sun, and inertia, which is trying to keep each planet moving in a straight line.
Inertia and gravity
Planets revolve on their axis. Separate to this motion, they also orbit the Sun. The force of gravity and the momentum of the objects keep them going.
centripetal force
orbit
gravity and force
No force is necessary to keep a moving object in motion. But if you want it tofollow a curve, such as for example a closed orbit, then that takes force. Theforce that keeps Neptune in its closed orbit is the same force that keeps everyplanet, moon, comet, and asteroid in its own closed orbit around its own centralbody. It's the force of gravity.
The mutual gravitational attraction between the earth and the sun is the force that keeps the earth in orbit around the sun. It's the only force required, which is lucky, because it's the only force that exists.
Gravity keeps planets in orbit as it spins it creates gravity and gravitational pull keeps the a lined
The force of gravity that they exert on each other, and the velocities of the Moon and Earth which is their "inertia".
Gravity holds an object in a circular orbit.
Yes. It keeps the planets in orbit around the Sun.
You're half-way there. The mutual, equal gravitational forces between the Earth and Sun maintain the Earth's stable, closed, elliptical orbit around the Earth/Sun common center of mass.
The elliptical shape of each planetary orbit is the result of the adding together the forces of gravity, which tries to move each planet toward the sun, and inertia, which is trying to keep each planet moving in a straight line.
You're half-way there. The mutual, equal gravitational forces between the Earth and Sun maintain the Earth's stable, closed, elliptical orbit around the Earth/Sun common center of mass.